[Fot] Brake and Clutch to the floor.
tr4racing at googlemail.com
tr4racing at googlemail.com
Thu Dec 26 02:12:12 MST 2019
You did well Tony.
I really don’t understand why people don’t lock their wheels when they spin.
If the wheels are rolling on a spin the car is doing funny things and nobody can predict where the car will be in a second.
With locked wheels the car is sliding in direction of inertia.
See how the F1 drivers do it. They lock the wheels and wait for the car to STAND STILL before they release the brakes.
Most of the worst accidents happen with spinning cars getting T-boned.
The cause for this is no locked wheels until stand still.
I don’t have good examples of myself as I spin rarely but maybe this one:
Cold Tires.
What I’m doing:
I was at slow speed with no grip on the back end caused by very low temperatures (36F) at the morning.
The back end stepped out and I slammed on the brakes. I saw the front heading for the tire wall.
I found it too expensive to crash the front end so still full on the brakes I released the clutch and gave a sever dip on the throttle with the heal to turn the car against the direction I was coming. Brakes still on full lock until the car stood still.
The situation was to a degree under control. Happily the car was parallel to the wall and didn’t touch by about 10” distance.
https://www.youtube.com/watch?v=nRbIEeOSw4Y
Cheers
Chris
Von: Fot <fot-bounces at autox.team.net> Im Auftrag von Tony Drews via Fot
Gesendet: Donnerstag, 26. Dezember 2019 06:39
An: fot at autox.team.net
Betreff: Re: [Fot] Brake and Clutch to the floor.
Another two feet in video - skip to about 2:45. This has nothing to do with the original Overdrive question, but shows how hard braking keeps the car from going in unpredictable directions... Took me a mental second to realize I wasn't going to catch this one, seems like much less than a second watching the video.
https://www.youtube.com/watch?v=SFQUYNxwIMI
Cheers, Tony
On 12/25/2019 7:57 PM, marty via Fot wrote:
If you go to the 6:47 point in this video you can see John showing off the brake and clutch to the floor technique. 🙂
https://youtu.be/uyZNmn-5SpA
Marty
_____
From: Fot <mailto:fot-bounces at autox.team.net> <fot-bounces at autox.team.net> on behalf of John H. Hasty via Fot <mailto:fot at autox.team.net> <fot at autox.team.net>
Sent: Tuesday, December 24, 2019 2:18 PM
To: David Gott <mailto:triumphsix at yahoo.com> <triumphsix at yahoo.com>
Cc: FOT List <mailto:fot at autox.team.net> <fot at autox.team.net>; Glenn Franco <mailto:brakey6666 at gmail.com> <brakey6666 at gmail.com>
Subject: Re: [Fot] A-Type Overdrive Testing
Yep...brake & clutch to the floor... also can be wired to disengage ... ask Steve Yott...
Sent from my iPhone
On Dec 24, 2019, at 1:50 PM, David Gott via Fot <mailto:fot at autox.team.net> <fot at autox.team.net> wrote:
Speaking of spinning the OD backwards, which it won’t do, what happens if you spin the car while overdrive is engaged? Probably my biggest concern for running one of these in a race car... I was thinking I’d use it on track and maybe autocross, but I think that is ill advised now that I bring up that question. Has anyone ever spun and rolled backwards, with OD engaged?
Dave G
Sent from Yahoo Mail for iPhone <https://overview.mail.yahoo.com/?.src=iOS>
On Tuesday, December 24, 2019, 12:47 PM, Greg Blake <mailto:gblake58tr3 at icloud.com> <gblake58tr3 at icloud.com> wrote:
If this is for a race car, you might consider shiming the accumulator spring to get closer to 500psi.
Sent from my iPhone
On Dec 24, 2019, at 10:51 AM, David Gott via Fot <mailto:fot at autox.team.net> <fot at autox.team.net> wrote:
I was able to test my overdrive by chucking a 1/2” electric drill on the input shaft and turning the whole transmission. (Make sure to spin the right direction!). Pretty sure I used 4th gear. I was able to determine that my OD pressure is at 350 psi, so I’ll have to shim the spring I guess.
Secondary question; the OD seemed to stick on me, but I did not have a load on the output flange, due to being on the bench; I’m assuming this might be an issue? Or would a load coax the OD to releasing as appropriate?
Hopefully I don’t hijack your thread too much!
Thanks,
Dave Gott
62 TR4 (“A” type on the bench)
Sent from Yahoo Mail for iPhone <https://overview.mail.yahoo.com/?.src=iOS>
On Tuesday, December 24, 2019, 11:25 AM, Jack Wheeler via Fot <mailto:fot at autox.team.net> <fot at autox.team.net> wrote:
I have tested overdrives like this for years. My drive motor only spins in one direction, which makes sure the output shaft only spins in the same direction the shaft would be spinning when the car is driven in a forward speed. Therefore, I don't know what would happen if you spun it in the wrong direction.
Jack
On Monday, December 23, 2019, 10:05:53 PM EST, Glenn Franco via Fot <mailto:fot at autox.team.net> <fot at autox.team.net> wrote:
Merry Christmas
Quick Question
A friend of mine started testing his A-Type Overdrives by back spinning the output flange (to the prop shaft) with a pulley and electric motor.
I've seen this done by spinning the transmission INPUT shaft with a pulley and electric motor but not from the rear.
Any chance of damaging the overdrive since the overrunning clutch is only going to spin in the one direction, can it lock up the overdrive?
Thanks in advance
Glenn
_______________________________________________
fot at autox.team.net <mailto:fot at autox.team.net>
http://www.fot-racing.com
Donate: http://www.team.net/donate.html
Archive: http://autox.team.net/archive <http://autox.team.net/archive%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20> http://www.team.net/pipermail/fot
Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com
_______________________________________________
fot at autox.team.net <mailto:fot at autox.team.net>
http://www.fot-racing.com
Donate: http://www.team.net/donate.html
Archive: http://autox.team.net/archive <http://autox.team.net/archive%20> http://www.team.net/pipermail/fot
Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/triumphsix@yahoo.com
_______________________________________________
fot at autox.team.net <mailto: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/gblake58tr3@icloud.com
_______________________________________________
fot at autox.team.net <mailto: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/jhasty@mhc-law.com
_______________________________________________
fot at autox.team.net <mailto: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/tony@tonydrews.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20191226/02f6d913/attachment-0003.htm>
More information about the Fot
mailing list