From vintageclassicsus at outlook.com Thu Oct 1 08:06:36 2026 From: vintageclassicsus at outlook.com (Tony Garmey) Date: Thu, 1 Oct 2026 14:06:36 +0000 Subject: [Fot] 1500 cross drill crankshaft In-Reply-To: <08675D4F-B33C-401A-B7BF-C3CD1CF0209B@dcphotos.com> References: <08675D4F-B33C-401A-B7BF-C3CD1CF0209B@dcphotos.com> Message-ID: Shaft tech in Ohio is my go to for all crank shaft modifications and repairs . Sent from my iPhone > On Sep 30, 2026, at 2:18?PM, Don Couch wrote: > > ?Greetings all, > I?m in need of a machine shop that can cross drill the rod journals on a 1500 crankshaft. > My guy in Austin retired. > Willing to ship if necessary. > Thanks, > Don > _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com/ > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vintageclassicsus at outlook.com > > From mmoore at mtmcpafirm.com Thu Oct 1 09:16:03 2026 From: mmoore at mtmcpafirm.com (Michael Moore) Date: Thu, 1 Oct 2026 15:16:03 +0000 Subject: [Fot] 1500 cross drill crankshaft In-Reply-To: References: <08675D4F-B33C-401A-B7BF-C3CD1CF0209B@dcphotos.com> Message-ID: My machinist also uses Shaft Tech, just fixed my messed up Moldex crank. Did excellent work. Have a Good Day Mike Michael T. Moore, CPA 3255 West 26th Street Erie, PA 16506 Phone:? 814-616-8652? ext 100 Fax:??????? 888-865-5279 Email:??? mmoore at mtmcpafirm.com This electronic mail message contains confidential and legally privileged information intended only for the use of the recipient. If the reader of this message is not the intended recipient, the reader is hereby notified that any dissemination, distribution, copying or other use of this message is strictly prohibited and is hereby instructed to notify the sender immediately by return email and destroy this copy of this message. -----Original Message----- From: Fot On Behalf Of Tony Garmey Sent: Thursday, October 1, 2026 10:07 AM To: Don Couch Cc: fot at autox.team.net Subject: Re: [Fot] 1500 cross drill crankshaft Shaft tech in Ohio is my go to for all crank shaft modifications and repairs . Sent from my iPhone > On Sep 30, 2026, at 2:18?PM, Don Couch wrote: > > ?Greetings all, > I?m in need of a machine shop that can cross drill the rod journals on a 1500 crankshaft. > My guy in Austin retired. > Willing to ship if necessary. > Thanks, > Don > _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com/ > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vintageclassicsus at outlook.com > > _______________________________________________ fot at autox.team.net http://www.fot-racing.com Donate: http://www.team.net/donate.html Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/mmoore at mtmcpafirm.com From robertten1 at aol.com Fri Oct 2 21:21:18 2026 From: robertten1 at aol.com (robertten1 at aol.com) Date: Sat, 3 Oct 2026 03:21:18 +0000 (UTC) Subject: [Fot] Spitfire Clutch References: <608704176.154516.1790997678973.ref@mail.yahoo.com> Message-ID: <608704176.154516.1790997678973@mail.yahoo.com> Good evening members, I am having an issue with the clutch on my Triumph Spitfire.? Slippage.? It's a stock pressure plate and disc in a 1500 engine mated to a GT6 transmission.??My quest is acquire a heavy duty pressure plate or info for a company that can rebuild modify my pressure plate.? Company I have used in the past has long gone out of business.? Our parts suppliers seem to of stopped offering performance clutches over the years.? Unless anyone or more of our members can offer suggestions of help ?I have tried asking Spitfire racers their sources but have not received an answer. Curious,Bob TottenAutocrosser -------------- next part -------------- An HTML attachment was scrubbed... URL: From ponobill at gmail.com Fri Oct 2 23:21:00 2026 From: ponobill at gmail.com (Ponostyle) Date: Fri, 2 Oct 2026 22:21:00 -0700 Subject: [Fot] Spitfire Clutch In-Reply-To: <608704176.154516.1790997678973@mail.yahoo.com> References: <608704176.154516.1790997678973.ref@mail.yahoo.com> <608704176.154516.1790997678973@mail.yahoo.com> Message-ID: <29CAD944-7FEB-4562-8627-A44EAFE00AA2@ponostyle.com> all depends on how serious you are about solving the problem.I never used stock clutches in Peyote?it smoked the stock stuff?always multi plate and radial bearing throwout?generally modified Saab. I think Tilton makes a two disk one that?s mostly a bolt on for spitfire. Not cheap. > On Oct 2, 2026, at 8:21?PM, robertten1 at aol.com wrote: > > Good evening members, > > I am having an issue with the clutch on my Triumph Spitfire. Slippage. It's a stock pressure plate and disc in a 1500 engine mated to a GT6 transmission. > My quest is acquire a heavy duty pressure plate or info for a company that can rebuild modify my pressure plate. Company I have used in the past has long gone out of business. Our parts suppliers seem to of stopped offering performance clutches over the years. Unless anyone or more of our members can offer suggestions of help ? > I have tried asking Spitfire racers their sources but have not received an answer. > > Curious, > Bob Totten > Autocrosser > _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/bill at ponostyle.com > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From dcphotos at icloud.com Sat Oct 3 13:34:53 2026 From: dcphotos at icloud.com (Don Couch) Date: Sat, 3 Oct 2026 14:34:53 -0500 Subject: [Fot] Spitfire Clutch Message-ID: <2483E772-3A07-429F-A531-D9E1513FEFEE@icloud.com> Bob, I run a GT6 box in my 1296 Spitfire with a stock pressure plate and a solid center disc I got from California Clutch which I think changed name to Custom Clutches. www.californiacustomclutches.com Been some time ago so, don?t know if they still make them for Spitfire. Give them a call. Let us know. Good Luck! Cheers, Don -------------- next part -------------- An HTML attachment was scrubbed... URL: From mecook635 at gmail.com Sun Oct 4 06:21:01 2026 From: mecook635 at gmail.com (Mark Cook) Date: Sun, 4 Oct 2026 08:21:01 -0400 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules Message-ID: All, So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow these tires and I switched to the TDRs. In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and VSCCA continue to require fully treaded tires in CP/DP classes, like the Hoosier Speedster and TDR. Though, VRG is deferring to other organizations tire rules in joint events (VIR / Summit Point with VDCA as example). I think most of you run in VDCA Group 3, but has anyone running in Group 8 CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? Thanks, Mark Cook -------------- next part -------------- An HTML attachment was scrubbed... URL: From jaboruch at yahoo.com Sun Oct 4 20:24:36 2026 From: jaboruch at yahoo.com (Joe Boruch) Date: Mon, 5 Oct 2026 02:24:36 +0000 (UTC) Subject: [Fot] Spitfire Clutch In-Reply-To: <29CAD944-7FEB-4562-8627-A44EAFE00AA2@ponostyle.com> References: <608704176.154516.1790997678973.ref@mail.yahoo.com> <608704176.154516.1790997678973@mail.yahoo.com> <29CAD944-7FEB-4562-8627-A44EAFE00AA2@ponostyle.com> Message-ID: <1376701024.1695456.1791167076695@mail.yahoo.com> Bob, I see from your signature line that you are an autocrosser. ?If you are driving your Spit on the street to events, a multi disc clutch or even a single solid disc clutch might be too severe, and the stop and go driving on the street will wear them fast. ?If you are trailering the car, do not drive it up on the trailer ramps with a multi disc clutch. ?I've seen a few cars kill their clutches driving onto trailers. ?Need to winch it on.JoeB On Saturday, October 3, 2026 at 01:43:44 AM EDT, Ponostyle wrote: all depends on how serious you are about solving the problem.I never used stock clutches in Peyote?it smoked the stock stuff?always multi plate and radial bearing throwout?generally modified Saab. I think Tilton makes a two disk one that?s mostly a bolt on for spitfire. Not cheap.? On Oct 2, 2026, at 8:21?PM, robertten1 at aol.com wrote: Good evening members, I am having an issue with the clutch on my Triumph Spitfire.? Slippage.? It's a stock pressure plate and disc in a 1500 engine mated to a GT6 transmission.??My quest is acquire a heavy duty pressure plate or info for a company that can rebuild modify my pressure plate.? Company I have used in the past has long gone out of business.? Our parts suppliers seem to of stopped offering performance clutches over the years.? Unless anyone or more of our members can offer suggestions of help ?I have tried asking Spitfire racers their sources but have not received an answer. Curious,Bob TottenAutocrosser_______________________________________________ fot at autox.team.net http://www.fot-racing.com Donate: http://www.team.net/donate.html Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/bill at ponostyle.com _______________________________________________ fot at autox.team.net http://www.fot-racing.com Donate: http://www.team.net/donate.html Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/jaboruch at yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: From mecook635 at gmail.com Tue Oct 6 10:16:15 2026 From: mecook635 at gmail.com (Mark Cook) Date: Tue, 6 Oct 2026 12:16:15 -0400 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules In-Reply-To: References: Message-ID: Just following up on my earlier email to see if anyone has thought about the tire rules and my question below. Thanks, Mark Cook On Sun, Oct 4, 2026 at 8:21?AM Mark Cook wrote: > All, > > So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was > previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I > purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow > these tires and I switched to the TDRs. > > In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow > the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and > VSCCA continue to require fully treaded tires in CP/DP classes, like the > Hoosier Speedster and TDR. Though, VRG is deferring to other organizations > tire rules in joint events (VIR / Summit Point with VDCA as example). > > I think most of you run in VDCA Group 3, but has anyone running in Group 8 > CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? > > Thanks, > > Mark Cook > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From rkramer56 at gmail.com Wed Oct 7 07:11:02 2026 From: rkramer56 at gmail.com (Bob Kramer) Date: Wed, 7 Oct 2026 08:11:02 -0500 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules In-Reply-To: References: Message-ID: Mark, Here is what our TX based clubs list as tire rules for the class inc;using TR6's. The 100 Minimum treadwear rating and required DOT rating technically disqualifies the Hoosier TDR's, but I see plenty of them around the paddock. Google says the TDR's are something like 40 TW. Other than that, the price keeps me away. I run the 225-50-15 TOYO R888s. [image: image.png] Bob On Sun, Oct 4, 2026 at 7:38?AM Mark Cook wrote: > All, > > So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was > previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I > purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow > these tires and I switched to the TDRs. > > In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow > the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and > VSCCA continue to require fully treaded tires in CP/DP classes, like the > Hoosier Speedster and TDR. Though, VRG is deferring to other organizations > tire rules in joint events (VIR / Summit Point with VDCA as example). > > I think most of you run in VDCA Group 3, but has anyone running in Group 8 > CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? > > Thanks, > > Mark Cook > > _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage : > http://autox.team.net/mailman/options/fot/rkramer56 at gmail.com > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 147939 bytes Desc: not available URL: From mecook635 at gmail.com Wed Oct 7 15:48:17 2026 From: mecook635 at gmail.com (Mark Cook) Date: Wed, 7 Oct 2026 17:48:17 -0400 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules In-Reply-To: References:

Message-ID: Bob K, Thanks - interesting the differences between all the "vintage" organizations. Those rules would rule out the Speedster since they are 40TW as well. Seems like they could get together and unify the rules somewhat. Much appreciated! Regards, Mark On Wed, Oct 7, 2026 at 9:11?AM Bob Kramer wrote: > Mark, > > Here is what our TX based clubs list as tire rules for the class > inc;using TR6's. The 100 Minimum treadwear rating and required DOT rating > technically disqualifies the Hoosier TDR's, but I see plenty of them around > the paddock. Google says the TDR's are something like 40 TW. Other than > that, the price keeps me away. I run the 225-50-15 TOYO R888s. > > [image: image.png] > > Bob > > On Sun, Oct 4, 2026 at 7:38?AM Mark Cook wrote: > >> All, >> >> So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was >> previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I >> purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow >> these tires and I switched to the TDRs. >> >> In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow >> the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and >> VSCCA continue to require fully treaded tires in CP/DP classes, like the >> Hoosier Speedster and TDR. Though, VRG is deferring to other organizations >> tire rules in joint events (VIR / Summit Point with VDCA as example). >> >> I think most of you run in VDCA Group 3, but has anyone running in Group >> 8 CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? >> >> Thanks, >> >> Mark Cook >> >> _______________________________________________ >> fot at autox.team.net >> >> http://www.fot-racing.com >> >> Donate: http://www.team.net/donate.html >> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot >> Unsubscribe/Manage : >> http://autox.team.net/mailman/options/fot/rkramer56 at gmail.com >> >> >> -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 147939 bytes Desc: not available URL: From rkramer56 at gmail.com Wed Oct 7 17:21:19 2026 From: rkramer56 at gmail.com (Bob Kramer) Date: Wed, 7 Oct 2026 18:21:19 -0500 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rule In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From tony at tonydrews.com Wed Oct 7 19:19:54 2026 From: tony at tonydrews.com (Tony Drews) Date: Wed, 7 Oct 2026 20:19:54 -0500 Subject: [Fot] Road America in-car videos from Sept 20 Message-ID: Here are videos from Road America a week and a half ago. Here's the Group 2 Feature race.? I didn't have the microphone hooked up so the sound is mainly wind noise.? Was a decent race. Best one was the Founders Cup, but I lost the rear cam in that one and a lot of that race was me holding off Rees and Brian Lynch. https://youtu.be/WzK_TuZMwm4 Here's the Sheldon Cup race from Road America a week and a half ago.? This is for close wheel cars that turn under 3 minute lap times.? There used to be a 2:45 cut off but not this time.? So I'm out with the big dawgs.? They did a nice job taking care of us slowpokes.? Not a lot of battling, but some great sounding cars go by. https://youtu.be/a_JTEzt5GDo Here's the "Founder's Cup" from Road America a week and a half ago.? It's a great addition to the weekend.? Starts at 4:30, so you don't get on the road until later, but it's another race and I approve.? I'm glad I stuck around - it was the most fun race to drive of the weekend.? I had a great battle with Rees Candee and Brian Lynch.? Unfortunately the rear facing camera battery died partway through the race and for the majority of it Brian was right on my tail, drafting down all of the straights.? We had a healthy man-hug afterwards. https://youtu.be/OPat3k9RizQ Regards, Tony Drews From ofracer at gmail.com Thu Oct 8 07:24:31 2026 From: ofracer at gmail.com (Mike Harmuth) Date: Thu, 8 Oct 2026 09:24:31 -0400 Subject: [Fot] Spitfire Clutch In-Reply-To: <608704176.154516.1790997678973@mail.yahoo.com> References: <608704176.154516.1790997678973.ref@mail.yahoo.com> <608704176.154516.1790997678973@mail.yahoo.com> Message-ID: Hi Bob, I missed the original post. I run an Aluminium flywheel with a stock clutch and modified pressure plate from Ted at TSI 72 MK4 spit on my small journal MK3 engine (10 spline). I have a highly modified early Spit gearbox with TR8 gears inside (a Quantum Mechanics special). I use the later clutch because the flywheel for a MK3 isn't available but it is a larger diameter (7.25" vs 6.5" ). I do 6- 8 weekends a year and normally pull the engine at the end of the season for a refresh. The clutch disks look OK after a season but I change them anyway, they aren't expensive. I did buy a Tilton based clutch and flywheel set up from Joe Siam (Checkered Flag Racing) before he closed up shop but I haven't put it in yet. My big concern with the Tilton is it's a solid center disk and that's not the best setup for vintage parade laps (at least one event a year) but I wanted to have Plan B ready if I start blowing up disks. Again, that hasn't been a problem with road racing, unlike the abuse off the line you AutoX guys put on the drive train. mike h Tilton Set up [image: P1015092.JPG] [image: P1015093.JPG] On Fri, Oct 2, 2026 at 11:39?PM robertten1 at aol.com wrote: > Good evening members, > > I am having an issue with the clutch on my Triumph Spitfire. Slippage. > It's a stock pressure plate and disc in a 1500 engine mated to a GT6 > transmission. > My quest is acquire a heavy duty pressure plate or info for a company that > can rebuild modify my pressure plate. Company I have used in the past has > long gone out of business. Our parts suppliers seem to of stopped offering > performance clutches over the years. Unless anyone or more of our members > can offer suggestions of help ? > I have tried asking Spitfire racers their sources but have not received an > answer. > > Curious, > Bob Totten > Autocrosser > _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage : > http://autox.team.net/mailman/options/fot/ofracer at gmail.com > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: P1015092.JPG Type: image/jpeg Size: 2541646 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: P1015093.JPG Type: image/jpeg Size: 2269390 bytes Desc: not available URL: From ofracer at gmail.com Thu Oct 8 07:35:47 2026 From: ofracer at gmail.com (Mike Harmuth) Date: Thu, 8 Oct 2026 09:35:47 -0400 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules In-Reply-To: References:

Message-ID: Hi Mark. I've been using the Hoosier TDRs for years on my Spit and all groups accept them. This year, I had, what turned out to be a mounting problem, with a fresh set of TDRs and I needed tires ASAP after the K Cup so I bought a set of Toyo Proxies R888R (full width tread tires). Again, these are allowed with every racing group. They have a smaller diameter than the TDRs which helped me in the boot at the Glen but not so much on the straights. I've sorted out the mounting problems with the TDRs so I plan on a back to back comparison next weekend at Thompson to see what works best there (slower track, probably the Toyos). Our racing group, HRG, allows the R7s and similar tires at every event except our joint weekend at the Glen with VRG. That's the one VRG event (out of 3 last year) where HRG tire rules were not allowed. mike h On Tue, Oct 6, 2026 at 12:34?PM Mark Cook wrote: > Just following up on my earlier email to see if anyone has thought about > the tire rules and my question below. > > Thanks, > > Mark Cook > > On Sun, Oct 4, 2026 at 8:21?AM Mark Cook wrote: > >> All, >> >> So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was >> previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I >> purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow >> these tires and I switched to the TDRs. >> >> In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow >> the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and >> VSCCA continue to require fully treaded tires in CP/DP classes, like the >> Hoosier Speedster and TDR. Though, VRG is deferring to other organizations >> tire rules in joint events (VIR / Summit Point with VDCA as example). >> >> I think most of you run in VDCA Group 3, but has anyone running in Group >> 8 CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? >> >> Thanks, >> >> Mark Cook >> >> _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage : > http://autox.team.net/mailman/options/fot/ofracer at gmail.com > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From mecook635 at gmail.com Thu Oct 8 08:16:25 2026 From: mecook635 at gmail.com (Mark Cook) Date: Thu, 8 Oct 2026 10:16:25 -0400 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules In-Reply-To: References:

Message-ID: Mike, Thanks and appreciate the additional feedback. I have a R888s on another set of wheels, but have not driven with them yet. I would be interested in the results of your head to head comparison. I think the R888s are harder tires from what I understand, but similar temp ranges. After more research, I have decided to stick with the Hoosier TDRs. Just feels the right thing to do even with the technical differences. For those that might be interested, the Hoosier R8s will require a front camber of (2.0) to (3.5) and a rear camber of about (2.0), which would be difficult to achieve with the TR6, without radically changing the front suspension. I would rather stay vintage than make those kind of changes. While at it, curiosity lead me to compare the Speedster to the TDR. I found the Speedster, being a radial, also requires a higher camber as well. Otherwise, with a camber of less than (2.0), it would wear the outside of the tire more, and grip would be less. Most of the FOT may already be aware of these differences, but some of this is still new to me. I learned that the HOTD-R tires use the same compound as the Hoosier R7s (the Hoosier chart below confirms this). The Speedster uses a different compound, but has similar temperature ranges and hardness (S9). Thanks again for the response and hope the below helps those that might be interested in looking at different tires. Regards, Mark Cook *Hoosier Speedster Overview* The Speedster is a modern DOT-approved racing radial disguised with a period-correct vintage tread pattern. ? Setup Requirements: Because it is a radial, it demands significantly more negative camber *(often -2.5 to -3.5 degrees total) *to keep the tread flat under heavy cornering loads. It also relies on lower cold inflation pressures compared to bias tires to achieve its optimal hot footprint. ? Performance Profile: It yields high absolute peak cornering speeds and sharp steering response. However, the limit of adhesion can be more abrupt than a traditional bias tire. *Hoosier HOTD-R Overview* The HOTD-R (Historic Old Timer Design - Radial/Race designation variant) represents Hoosier's flagship bias-ply evolution for strict vintage rules. ? Setup Requirements: It functions exceptionally well on traditional vintage suspension setups with modest negative camber *(e.g., -1.5 degrees).* It uses stiffer sidewalls that preserve fender clearance under load without requiring heavy static lean angles. ? Performance Profile: The HOTD-R allows drivers to lean aggressively on the tire, sliding the car predictably through corners. It handles heat cycles gracefully and functions at a broader slip angle, matching the classic driving style expected in historic motorsport classes. *Hoosier Speedster Camber Profile* ? Target Front Camber: -2.5? to -3.5? of negative camber is required. ? Target Rear Camber: -1.5? to -2.0? of negative camber. ? Mechanical Necessity: As a radial tire, the sidewall is designed to flex dynamically under lateral load. Without aggressive negative camber, the tire will roll onto its outer shoulder, causing rapid outer tread wear, a severe drop-off in grip, and potential center-rib blistering. Achieving these specs on vintage suspension often requires modified upper control arms, slotted pivots, or offset bushings. *Hoosier HOTD-R Camber Profile* ? Target Front Camber: -1.0? to -1.5? of negative camber is ideal. ? Target Rear Camber: -0.5? to -1.0? of negative camber. ? Mechanical Necessity: The HOTD-R utilizes a stiff bias-ply construction. The tire carcass is structurally rigid and resists rolling under cornering force, meaning the tread stays flat relative to the wheel. If you run excessive negative camber (over -2.0?) on a HOTD-R, you will ride strictly on the inner edge of the tire in a straight line, overheating the inner carcass and reducing braking efficiency. The differences in carcass construction between the Hoosier Speedster and the Hoosier HOTD-R dictate two entirely distinct driving styles on track. Driving a radial requires high precision and managing a sharp edge, while driving a bias-ply style tire requires managing weight transfer and driving with the throttle through a slide. 1. Slip Angle Management ? Hoosier Speedster: Requires low slip angles. You must keep the car tracking cleanly along the optimal geometric line. The tire delivers its peak grip with very little slip (typically 4 to 7 degrees). If you over-drive the tire and force the car into a slide, the grip drops off abruptly, causing the car to snap or scrub off significant corner speed. ? Hoosier HOTD-R: Thrives on high slip angles. This tire is designed for traditional vintage four-wheel drifts. Peak adhesion occurs at a much wider slip angle (8 to 12+ degrees). The breakaway characteristic is incredibly progressive, allowing you to deliberately slide the rear end to help rotate the car without losing momentum or risking a sudden spin. 2. Steering Inputs & Precision ? Hoosier Speedster: Demands smooth, minimal, and precise inputs. Because the modern radial construction provides a sharp, immediate steering response, aggressive hand movements will overload the front contact patch. You must feed the steering in gently and catch slides instantly before they exceed the tire's narrow peak grip window. ? Hoosier HOTD-R: Requires proactive, deliberate, and busier steering. The stiff carcass design responds beautifully to aggressive initial turn-in to set the platform. Once the car is balanced in the corner, you will find yourself constantly modulating the steering wheel and balancing the car's attitude using fine adjustments of the throttle. 3. Braking and Corner Transitions ? Hoosier Speedster: Favors straight-line threshold braking. Radials maximize their longitudinal grip when flat. You want to get the heavy braking done while the wheels are pointed straight, then transition smoothly off the brake pedal as you initiate turn-in (trail braking must be managed carefully to avoid overloading the front outer tire shoulder). ? Hoosier HOTD-R: Excels at aggressive trail braking and pitch management. Because the tire carcass remains stable under compression, you can carry the brakes deep into the apex to pin the nose and break the rear traction loose intentionally. The tire is highly forgiving during rapid weight transitions, allowing you to manipulate the car's balance mid-corner using the chassis' natural roll. On Thu, Oct 8, 2026 at 9:36?AM Mike Harmuth wrote: > Hi Mark. I've been using the Hoosier TDRs for years on my Spit and all > groups accept them. This year, I had, what turned out to be a mounting > problem, with a fresh set of TDRs and I needed tires ASAP after the K Cup > so I bought a set of Toyo Proxies R888R (full width tread tires). Again, > these are allowed with every racing group. They have a smaller diameter > than the TDRs which helped me in the boot at the Glen but not so much on > the straights. I've sorted out the mounting problems with the TDRs so I > plan on a back to back comparison next weekend at Thompson to see what > works best there (slower track, probably the Toyos). > > Our racing group, HRG, allows the R7s and similar tires at every event > except our joint weekend at the Glen with VRG. That's the one VRG event > (out of 3 last year) where HRG tire rules were not allowed. > > mike h > > On Tue, Oct 6, 2026 at 12:34?PM Mark Cook wrote: > >> Just following up on my earlier email to see if anyone has thought about >> the tire rules and my question below. >> >> Thanks, >> >> Mark Cook >> >> On Sun, Oct 4, 2026 at 8:21?AM Mark Cook wrote: >> >>> All, >>> >>> So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was >>> previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I >>> purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow >>> these tires and I switched to the TDRs. >>> >>> In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow >>> the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and >>> VSCCA continue to require fully treaded tires in CP/DP classes, like the >>> Hoosier Speedster and TDR. Though, VRG is deferring to other organizations >>> tire rules in joint events (VIR / Summit Point with VDCA as example). >>> >>> I think most of you run in VDCA Group 3, but has anyone running in Group >>> 8 CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? >>> >>> Thanks, >>> >>> Mark Cook >>> >>> _______________________________________________ >> fot at autox.team.net >> >> http://www.fot-racing.com >> >> Donate: http://www.team.net/donate.html >> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot >> Unsubscribe/Manage : >> http://autox.team.net/mailman/options/fot/ofracer at gmail.com >> >> >> -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: Hoosier Comparision Chart 2024.pdf Type: application/pdf Size: 878739 bytes Desc: not available URL: From mecook635 at gmail.com Thu Oct 8 12:12:52 2026 From: mecook635 at gmail.com (Mark Cook) Date: Thu, 8 Oct 2026 14:12:52 -0400 Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rule In-Reply-To: References:

Message-ID: Yep, they are UTQG 40 [image: image.png] On Wed, Oct 7, 2026 at 7:21?PM Bob Kramer wrote: > Mark, > > I didn?t realize that Speedsters were > 40 TW rating tires. Years ago I ran them when 60 series were required but > they too hot no pricey. I do remember wearing out a new right front in one > weekend. > > You only get one chance at life, make it a TRIUMPH. > > On Oct 7, 2026, at 4:48?PM, Mark Cook wrote: > > ? > Bob K, > > Thanks - interesting the differences between all the "vintage" > organizations. Those rules would rule out the Speedster since they are > 40TW as well. Seems like they could get together and unify the rules > somewhat. > > Much appreciated! > > Regards, > > Mark > > On Wed, Oct 7, 2026 at 9:11?AM Bob Kramer wrote: > >> Mark, >> >> Here is what our TX based clubs list as tire rules for the class >> inc;using TR6's. The 100 Minimum treadwear rating and required DOT rating >> technically disqualifies the Hoosier TDR's, but I see plenty of them around >> the paddock. Google says the TDR's are something like 40 TW. Other than >> that, the price keeps me away. I run the 225-50-15 TOYO R888s. >> >> >> >> Bob >> >> On Sun, Oct 4, 2026 at 7:38?AM Mark Cook wrote: >> >>> All, >>> >>> So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was >>> previously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I >>> purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow >>> these tires and I switched to the TDRs. >>> >>> In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow >>> the Hoosier R7/R8, as well as the Toyo Proxes RR. It appears that VRG and >>> VSCCA continue to require fully treaded tires in CP/DP classes, like the >>> Hoosier Speedster and TDR. Though, VRG is deferring to other organizations >>> tire rules in joint events (VIR / Summit Point with VDCA as example). >>> >>> I think most of you run in VDCA Group 3, but has anyone running in Group >>> 8 CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes RR? >>> >>> Thanks, >>> >>> Mark Cook >>> >>> _______________________________________________ >>> fot at autox.team.net >>> >>> http://www.fot-racing.com >>> >>> Donate: http://www.team.net/donate.html >>> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot >>> Unsubscribe/Manage : >>> http://autox.team.net/mailman/options/fot/rkramer56 at gmail.com >>> >>> >>> -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 177992 bytes Desc: not available URL: From dave at microworks.net Fri Oct 9 14:13:04 2026 From: dave at microworks.net (Dave Riddle) Date: Fri, 9 Oct 2026 20:13:04 +0000 Subject: [Fot] Question about Kastner 2027 Message-ID: We are locking down lodging and flights. Since the Event dates are Friday the 13th - Sunday the 15th does anyone know if there will be any open track testing available on Thursday the 11th? Or do we just get a normal Practice on Friday, Qualifying on Saturday and the Race on Sunday? [MWLOGO-Signature] Dave Riddle Business IT Consulting Office: 480.610.8234 Cell: 602.692.5276 eMail: dave at microworks.net Website: http://www.microworks.net [Microsoft-Partner-Network][ace_1_orig][CCCLogo][cityhosted-authorized-dealer_orig] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.jpg Type: image/jpeg Size: 3456 bytes Desc: image001.jpg URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image002.png Type: image/png Size: 6532 bytes Desc: image002.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image003.png Type: image/png Size: 4397 bytes Desc: image003.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image004.png Type: image/png Size: 9507 bytes Desc: image004.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image005.png Type: image/png Size: 5068 bytes Desc: image005.png URL: From jason at multivintage.com Fri Oct 9 20:31:17 2026 From: jason at multivintage.com (Jason Ostrowski) Date: Fri, 9 Oct 2026 21:31:17 -0500 Subject: [Fot] Question about Kastner 2027 In-Reply-To: References: Message-ID: Hello Dave. The Event is big on track time Friday, Saturday and Sunday. There will be plenty of sessions before the cup race to learn and burn. We are planning an inquiry about a possible test day. But typically no test day. Drive in and paddock spot availability will be on thursday either way.. We are in talks with the club and they have us as a priority group, but nothing is set in stone yet. We will keep everyone updated as things progress Thanks. Jason Ostrowski Friendly Ghost Racing !969 Triumph GT6+ racecars Co-chair for Kastner Cup Grattan 2027 On Fri, Oct 9, 2026 at 3:47?PM Dave Riddle wrote: > We are locking down lodging and flights. > > > > Since the Event dates are Friday the 13th ? Sunday the 15th does anyone > know if there will be any open track testing available on Thursday the 11 > th? > > Or do we just get a normal Practice on Friday, Qualifying on Saturday and > the Race on Sunday? > > > > [image: MWLOGO-Signature] > > *Dave Riddle* > > Business IT Consulting > > Office: 480.610.8234 <(480)%20610-8234> > > Cell: 602.692.5276 <(602)%20692-5276> > > eMail: dave at microworks.net > > Website: http://www.microworks.net > > [image: Microsoft-Partner-Network] [image: > ace_1_orig] [image: CCCLogo] > [image: cityhosted-authorized-dealer_orig] > > > > _______________________________________________ > fot at autox.team.net > > http://www.fot-racing.com > > Donate: http://www.team.net/donate.html > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot > Unsubscribe/Manage : > http://autox.team.net/mailman/options/fot/jason at multivintage.com > > > -------------- next part -------------- An HTML attachment was scrubbed... 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Name: image005.png Type: image/png Size: 5068 bytes Desc: not available URL: From lunkercars at icloud.com Tue Oct 13 11:46:43 2026 From: lunkercars at icloud.com (Lunker Hilyer) Date: Tue, 13 Oct 2026 11:46:43 -0600 Subject: [Fot] Fot mailing list probe message In-Reply-To: <6CBFEA98-538C-40BF-8841-EE07E52013D8@icloud.com> References: <6CBFEA98-538C-40BF-8841-EE07E52013D8@icloud.com> Message-ID: > On Oct 13, 2026, at 9:51?AM, Lunker Hilyer wrote: > > ?I?m still receiving occasional messages thru Lunkercars at iCloud.com and Very occasionally thru Lunkercars at yahoo.com. > Still not able to post. > Greg ?Lunker? Hilyer > TR4 #314 > MadRid New Mexico > >> On Oct 13, 2026, at 9:01?AM, fot-bounces+19acfa7afe254e1599951861eafebdff1f729564 at autox.team.net wrote: >> >> ?This is a probe message. You can ignore this message. >> >> The Fot mailing list has received a number of bounces from you, >> indicating that there may be a problem delivering messages to >> lunkercars at icloud.com. A bounce sample is attached below. Please >> examine this message to make sure there are no problems with your >> email address. You may want to check with your mail administrator for >> more help. >> >> If you are reading this, you don't need to do anything to remain an >> enabled member of the mailing list. If this message had bounced, you >> would not be reading it, and your membership would have been disabled. >> Normally when you are disabled, you receive occasional messages asking >> you to re-enable your subscription. >> >> You can also visit your membership page at >> >> http://autox.team.net/mailman/options/fot/lunkercars%40icloud.com >> >> On your membership page, you can change various delivery options such >> as your email address and whether you get digests or not. >> >> If you have any questions or problems, you can contact the list owner >> at >> >> fot-owner at autox.team.net >>