[Fot] LSD

[Tony Drews]

I was thinking it would be interesting to see the other side of the 
axle from the same camera angle to see if you get as much flex in the 
spring as you do in the video.  The axle moves noticeably from the 
front to the rear as the spring winds / unwinds, if one spring is 
stiffer than the other you'd end up with some rear steer because of 
one side moving more than the other.

Tony

At 03:18 PM 5/31/2012, tr4racing at googlemail.com wrote:
>Bill,
>
>What I saw at the dyno session was that the left wheel moves more 
>forth and back than on the right side.
>I'm searching for the cause.
>All bushes seem to be okay.
>Your idea with different spring rates or broken leaves is a point to check.
>
>Thanks
>Chris
>
>Gesendet mit BlackBerry von Vodafone
>
>-----Original Message-----
>From: Bill Babcock <ponobill at gmail.com>
>Date: Thu, 31 May 2012 11:59:03
>To: <tr4racing at googlemail.com>
>Cc: <malaboge at aol.com>; <fot at autox.team.net>
>Subject: Re: [Fot] LSD
>
>With hard bushing you shouldn't need a panhard bar--at least I 
>don't. You might want some kind of anti-tramping bars though. I use 
>them on Peyote and they make a huge difference. If the spring rates 
>are a little different they will roll up differently and steer the 
>rear end. I'd suspect a problem in the LSD. Either your spring 
>washers might have heated up and softened or something is just not 
>adjusted properly.
>On May 31, 2012, at 11:47 AM, tr4racing at googlemail.com wrote:
>
> > Hi Nick from Nor Cal,
> >
> > I did changes to the rear:
> > 1. Changed from 4.1 axle to 4.55
> > 2. Swapped a welded diff against an LSD, Sailsbury type.
> > 3. I welded the axle tube to the housing.
> >
> > I have hard bushes at the springs rear. No rods just stock design.
> >
> > With the locked rear I had no  self steering.
> > It is not a bad steer but it is feelable.
> >
> > Cheers
> > Chris
> > Gesendet mit BlackBerry von Vodafone
> >
> > -----Original Message-----
> > From: malaboge at aol.com
> > Date: Thu, 31 May 2012 13:49:33
> > To: <tr4racing at googlemail.com>; <fot at autox.team.net>
> > Subject: Re: [Fot] LSD
> >
> >
> > Chris,
> > A few thoughts...
> > has it always done this or is it recent (added more hp lately?)
> > check for anything loose/broken (spring leaves can break and be 
> hard to spot if at the axle junction)
> > cracked frame (check at the  center "X" area as well as the where 
> the rear of the spring mounts to the frame area)
> > soft spring eye bushings
> > what sort of additional link do you have for the rear? traction 
> bars or upper link? if nothing (cannot tell from video) it may be 
> time to install one
> > disconnect emergency brakes and see if the problem changes
> >
> > if everything seems OK...detune the engine, you obviously have 
> too much power!
> >
> > always pulling a little "to the left" myself...
> > Nick in Nor Cal
> >
> >
> >
> >
> > -----Original Message-----
> > From: MadMarx <tr4racing at googlemail.com>
> > To: 'FOT' <fot at autox.team.net>
> > Sent: Thu, May 31, 2012 7:42 am
> > Subject: [Fot] LSD
> >
> >
> > I have the trouble that the car does pull a little to the right "on
> > hrottle" and to the left "off throttle".
> > Does anybody see a reason for that?
> > http://youtu.be/uMKqfOfSqGE
> > Cheers
> > hris
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> >
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