fot
[Top] [All Lists]

Re: [Fot] LSD

To: "MadMarx" <tr4racing@googlemail.com>, <fot@autox.team.net>
Subject: Re: [Fot] LSD
From: "Charly Mitchel" <charly@mitchelplumbing.com>
Date: Fri, 1 Jun 2012 07:35:34 -0700
Delivered-to: fot-archive@autox.team.net
Delivered-to: fot@autox.team.net
List-archive: <http://autox.team.net/pipermail/fot>
List-help: <mailto:fot-request@autox.team.net?subject=help>
List-id: Private List <fot.autox.team.net>
List-post: <mailto:fot@autox.team.net>
List-subscribe: <http://autox.team.net/mailman/listinfo/fot>, <mailto:fot-request@autox.team.net?subject=subscribe>
List-unsubscribe: <http://autox.team.net/mailman/options/fot>, <mailto:fot-request@autox.team.net?subject=unsubscribe>
References: <7041997.1338401615997.JavaMail.root@elwamui-rustique.atl.sa.earthlink.net><A9662E14248140A5AEDE2C4D2FD0BAC3@don><002601cd3f3b$a1a4e0d0$e4eea270$@com><8CF0D6CDF76227F-AE8-32AC@webmail-m167.sysops.aol.com><20120531185341.BB3452D0330@autox.team.net><67008F0C-CD27-4E84-A109-C89004B64573@bnj.com><20120531201756.036962D036B@autox.team.net><20120601014146.748D92D03F3@autox.team.net> <4FC82887.0@bradakis.com> <000401cd3fea$7fdc8cf0$7f95a6d0$@com>
You say this happened when you went from a welded diff to a LSD.  Could this 
be caused by the way the torque is delivered to the wheels?  On a welded 
diff, the wheels get exactly the same amount of torque with no split between 
the sides.  With a LSD, there is the possibility that one wheel may get more 
torque than the other.  At this point I think that all the items mentioned 
before also come into play.  I would believe the only way to remedy this 
would be to put on the torque rods (traction bars) to positively locate the 
rear axel, and keep from having spring wind up.
Make sure you make the mounting fairly stout, as I witnessed a TR4 have one 
break several weeks ago.
and BTW, torque steer is fairly common in TR6's.

Charly Mitchel


> Marks comment did lead me to an theory:
>
> If the force of the prop shaft makes that the rear axle press the left 
> wheel
> on the ground and pulls the right wheel slightly up this would cause the
> axle to steer because the leaf springs are higher mounted at the rear than
> in front.
> If the right wheel goes up and the left goes down the rear axle would 
> change
> direction to the left.....which make the car going to the right "on
> throttle" - opposite "off throttle"
>
> As I change axle ratio from 4.1 to 4.55 the engine force is greatly
> increased which might result in more steer from the axle.
> Could this be?
> If so, then torque rods are now mandatory.
>
> Chris
>
> -----Urspr|ngliche Nachricht-----
> Von: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] Im
> Auftrag von Mark J Bradakis
> Gesendet: Freitag, 1. Juni 2012 04:27
> An: fot@autox.team.net
> Betreff: Re: [Fot] LSD
>
> There is also the reaction of the axle housing against the propshaft.
> The shaft turns one way, the axle reacts in the opposite direction.
> One wheel is pushed a bit harder into the rollers, one lifted a bit
> up.
>
> mjb.
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe:
> http://autox.team.net/mailman/options/fot/tr4racing@googlemail.com
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe: 
> http://autox.team.net/mailman/options/fot/charly@mitchelplumbing.com
_______________________________________________
fot@autox.team.net

http://www.fot-racing.com

Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe: 
http://autox.team.net/mailman/options/fot/fot-archive@autox.team.net



<Prev in Thread] Current Thread [Next in Thread>