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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D'>I would say the shaft is too thin for high revs, the oil bore is a stress riser exactly placed on the spot with the highest load. Prone to brake on high revs.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D'>The rods foot is too massive for a racing rod. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D'>Too thin on top, too fat on the bottom.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D'>An A shaped I-beam would have been better and leaving out the oil bore.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Chuck Arnold and/or Kathleen Kelley [mailto:triosan@gmail.com] <br><b>Gesendet:</b> Donnerstag, 23. Juli 2015 20:15<br><b>An:</b> MadMarx<br><b>Betreff:</b> Re: [Fot] FW: Racing rod design<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-family:"Georgia","serif"'>How would you categorize stock TR rod design?<o:p></o:p></span></p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Wed, Jul 22, 2015 at 11:15 PM, MadMarx <<a href="mailto:tr4racing@googlemail.com" target="_blank">tr4racing@googlemail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Hi Bob,<br><br>I'm sorry to worry you, that wasn't my intention.<br>But maths doesn't lie. Must be a reason why high volume car producer make all rods of the same pattern. It would be a lot cheaper to make them a square type or Carrillo H-beam typ then the I-beam version you find in all cars. I-beam is the best pattern to handle the forces in an piston engine.<br><br>Cheers<br>Chris<br><br><br>-----Ursprüngliche Nachricht-----<br>Von: Fot [mailto:<a href="mailto:fot-bounces@autox.team.net">fot-bounces@autox.team.net</a>] Im Auftrag von <a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a><br>Gesendet: Donnerstag, 23. Juli 2015 00:32<br>An: Marcel Van Mulders<br>Cc: <a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br>Betreff: Re: [Fot] FW: Racing rod design<br><br>Marcel.<br><br>I had a spectacular blow up at Mosport one year, in front of Kas and the whole FOT gang. Those were the last stock rods I ever used. LAter I went to the Moldex and other than a crack in a journal on a crank on a Moldex after running it too hard and hitting 8 grand a few times, I have avoided breakage. I prefer it that way and now I am concerned about those Pauters I bought. Thanks Chris!<br><br>Bob Kramer<br><a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a><br><br>---- Marcel Van Mulders <<a href="mailto:van.mulders.marcel@telenet.be">van.mulders.marcel@telenet.be</a>> wrote:<br>> Bob,<br>> That makes things clear.<br>> I still use the Carrillo's that I bought when I startet racing my TR3A<br>> in 2002. About everything broke once or more, except those Carrillo's.<br>> The original Triumph conrods can fail, but probably Carrillo and also<br>> Pauter rods have an easy time in our racecars?<br>> Marcel<br>><br>> -----Oorspronkelijk bericht-----<br>> Van: <a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a> [mailto:<a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a>]<br>> Verzonden: woensdag 22 juli 2015 22:32<br>> Aan: Marcel Van Mulders; 'MadMarx'<br>> CC: <a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br>> Onderwerp: Re: FW: [Fot] Racing rod design<br>><br>> Marcel,<br>><br>> Those are Carillo's on a TR spec Moldex crank spinning Wieseco pistons.<br>><br>> I did buy some Pauters but they are in another engine and haven't been<br>> tested as hard as the Carillos. I still have a TR4 race car that my<br>> son drives and the Pauters are in that engine. It has a camshaft of<br>> unknown origin that builds power between 2500- 5500.<br>><br>> Bob Kramer<br>> <a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a><br>><br>> ---- Marcel Van Mulders <<a href="mailto:van.mulders.marcel@telenet.be">van.mulders.marcel@telenet.be</a>> wrote:<br>> ><br>> ><br>> > -----Oorspronkelijk bericht-----<br>> > Van: Marcel Van Mulders [mailto:<a href="mailto:van.mulders.marcel@telenet.be">van.mulders.marcel@telenet.be</a>]<br>> > Verzonden: woensdag 22 juli 2015 19:29<br>> > Aan: 'MadMarx'<br>> > Onderwerp: RE: [Fot] Racing rod design<br>> ><br>> > Hi Chris and Bob,<br>> > As you know, I bought Bob's TR4A and I did have a look at the rods :<br>> > Pauter may call these rods X-beam but they actually are H-beam rods,<br>> > much the same design as the H-beam rods of Carrillo. (b.t.w.<br>> > Carrillo's I beam rods are less expensive than their H-beam one's).<br>> > Marcel<br>> ><br>> > -----Oorspronkelijk bericht-----<br>> > Van: Fot [mailto:<a href="mailto:fot-bounces@autox.team.net">fot-bounces@autox.team.net</a>] Namens MadMarx<br>> > Verzonden: dinsdag 21 juli 2015 21:39<br>> > Aan: 'FOT'<br>> > Onderwerp: Re: [Fot] Racing rod design<br>> ><br>> > Hi Bob,<br>> ><br>> > from engineer basis x-beam are the worst you can get. I'll never get<br>> > a clue how someone could imagine this design.<br>> ><br>> > Cheers<br>> > Chris<br>> ><br>> > -----Ursprüngliche Nachricht-----<br>> > Von: <a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a> [mailto:<a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a>]<br>> > Gesendet: Dienstag, 21. Juli 2015 21:31<br>> > An: 'FOT'; MadMarx<br>> > Betreff: Re: [Fot] Racing rod design<br>> ><br>> ><br>> > Chris,<a href="http://webmail.roadrunner.com/do/mail/message/reply?msgId=INBO" target="_blank">http://webmail.roadrunner.com/do/mail/message/reply?msgId=INBO</a><br>> > XD<br>> > ELIM68<br>> > 586&replyAll=on&referrer=msg#<br>> ><br>> > Look at Pauter Rods. they advertise their design as an x-beam. I<br>> > can't say that they are any better based on long term use but a lot<br>> > of us switched over due to the increase cost of Carillo's over time.<br>> ><br>> > <a href="http://pauter.com/parts/rods/" target="_blank">http://pauter.com/parts/rods/</a><br>> ><br>> > It just occured to me that you are probably running a custom crank,<br>> > Chevy rods with custom pistons to match. They may make comparable<br>> > models to fit that too since I believe that setup was designed<br>> > around the<br>> rods.<br>> ><br>> > <a href="http://webmail.roadrunner.com/do/mail/message/reply?msgId=INBOXDELIM" target="_blank">http://webmail.roadrunner.com/do/mail/message/reply?msgId=INBOXDELIM</a><br>> > 68<br>> > 586&re<br>> > plyAll=on&referrer=msg#<br>> > Bob Kramer<br>> > <a href="mailto:rkramer3@austin.rr.com">rkramer3@austin.rr.com</a><br>> ><br>> > ---- MadMarx <<a href="mailto:tr4racing@googlemail.com">tr4racing@googlemail.com</a>> wrote:<br>> > > Hi Guys,<br>> > ><br>> > ><br>> > ><br>> > > After my engine blow at the last race and a rod in two pieces I<br>> > investigated about rod design.<br>> > ><br>> > ><br>> > ><br>> > > In US forums I found an interesting opinion:<br>> > ><br>> > ><br>> > ><br>> > > H-beam rods are for low rev high torque engine (turbo, compressor)<br>> > ><br>> > > I-beam are for medium torque engines with high revs<br>> > ><br>> > ><br>> > ><br>> > > As engineer I agree with this statement. On high revs the rod<br>> > > shaft gets<br>> > bended back and forth by the inertia caused by the rotation.<br>> > ><br>> > > I could imagine that the sharp sides of the H-beam rod will create<br>> > > a crack<br>> > after a while because the stiffness for bending along the rotation<br>> > axis smaller than with an I-beam rod.<br>> > ><br>> > > That means to me that the fatigue resistance is smaller on an<br>> > > H-beam rod<br>> > at high revs.<br>> > ><br>> > > With high revs on a long stroke engine I mean 6000+.<br>> > ><br>> > ><br>> > ><br>> > > The manufacturer of the broken H-beam rod was Scat.<br>> > ><br>> > ><br>> > ><br>> > > I think next time I order an I-beam rod from Scat.<br>> > ><br>> > ><br>> > ><br>> > > What do you think?<br>> > ><br>> > ><br>> > ><br>> > > Cheers<br>> > ><br>> > > Chris<br>> > ><br>> ><br>> > _______________________________________________<br>> > <a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br>> ><br>> > <a href="http://www.fot-racing.com" target="_blank">http://www.fot-racing.com</a><br>> ><br>> > Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>> > Archive: <a href="http://www.team.net/archive" target="_blank">http://www.team.net/archive</a><br>> > Forums: <a href="http://www.team.net/forums" target="_blank">http://www.team.net/forums</a><br>> > Unsubscribe/Manage:<br>> > <a href="http://autox.team.net/mailman/options/fot/van.mulders.marcel@telenet" target="_blank">http://autox.team.net/mailman/options/fot/van.mulders.marcel@telenet</a><br>> > .b<br>> > e<br>> ><br>> ><br>> ><br>> ><br>><br>><br>><br><br>_______________________________________________<br><a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br><br><a href="http://www.fot-racing.com" target="_blank">http://www.fot-racing.com</a><br><br>Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/archive" target="_blank">http://www.team.net/archive</a><br>Forums: <a href="http://www.team.net/forums" target="_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/tr4racing@googlemail.com" target="_blank">http://autox.team.net/mailman/options/fot/tr4racing@googlemail.com</a><br><br><br><br>_______________________________________________<br><a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br><br><a href="http://www.fot-racing.com" target="_blank">http://www.fot-racing.com</a><br><br>Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/archive" target="_blank">http://www.team.net/archive</a><br>Forums: <a href="http://www.team.net/forums" target="_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/triosan@gmail.com" target="_blank">http://autox.team.net/mailman/options/fot/triosan@gmail.com</a><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>