Re: 16V rocco "tucked in" rear wheels...

[Jim Buck <vwpride@mixi.net>]

Widening the rear track increases understeer.  Vice versa.

jim

Chris Coracini wrote:

> i'm finding it hard to visualize why widening the rear track would
> adversely affect handling....  who's to say it wouldn't improve
> handling?  i could see geometry problems if the suspension lever arm was
> made longer (like in rear suspensions that pivot on a longitudinal axis,
> ala my old X1/9.  it did the saggy rear end thing with the wider track,
> and increased negative camber because of that....), but on the twist
> beam axle, it won't have that effect.  the stationary ride height will
> be the same as will the spring rate.  the only geometry that will change
> a little it when the axle twists in turns, at which point the axle will
> twist a *little* more (hardly anything, really) for the same given car
> "lean".  this acts sorta like a stiffer rear roll bar (not a lot) which
> wouldn't hurt i don't think...  but again this is just from visualizing
> the movements, i'd like to hear some opinions, as well as from some one
> that has done this (either behind the stub axle or behind the wheel...).
>  i know i've read a few people that have put one behind the wheel....
>
> >----------
> >From:  scirocco.gtx@juno.com[SMTP:scirocco.gtx@juno.com]
> >Sent:  Monday, December 07, 1998 1:56 PM
> >To:    scirocco-l@scirocco.org
> >Subject:       16V rocco "tucked in" rear wheels...
> >
> >The rear track on all Sciroccos is smaller than the front.
> >
> >To screw with this by widening the rear track vis a vis the front will
> >mess up the chassis geometry that VW engineers designed into the chassis
> >and probably adversely affect handling . . . .
> >
> >$.02
> >
> >Mark . . .   (THINK VW)
> >Scirocco 1982, Golf GT 1987
> >Previous Sciroccos: 1981S (RIP), 1980S, 1975TS, 1975
> >http://home.t-online.de/home/SCIROCCO2/mark.htm
> >--------- Begin forwarded message ----------
> >From: Chris Coracini <Coracin@usdl.com>
> >To: "'scirocco-l@scirocco.org'" <scirocco-l@scirocco.org>
> >Subject: 16V rocco "tucked in" rear wheels...
> >Date: Mon, 7 Dec 1998 13:23:25 -0500
> >Message-ID:
> ><c=US%a=_%p=USDLMAIL%l=N-SEUSDHQ-RA-981207182325Z-33842@n-sewpbcbo-exc.usdl.c
> >om>
> >
> >ever notice the rear wheels on 16V sciroccos (and i guess all of
> >them...) are more "tucked in" than the front wheels?  it's not that big
> >a deal, but i think it would look a lot better if they were flush like
> >the front wheels...  i was thinking about putting a spacer on them (10
> >to 15mm), but i decided against it because the load on the wheel bearing
> >wouldn't be balanced anymore and may wear them out faster (and i don't
> >want to ruin anything for purely cosmetic reasons...)  but i am debating
> >another more far fetched idea that seemingly should work...
> >
> >the stub axles/brakes/hub assembly on the rear wheels are bolted onto
> >the axle.  i've seen camber correction plates for VW's and they get
> >bolted up between the assembly and the axle face...  so, what about
> >putting a spacer BETWEEN the axle face and the wheel carrier assembly
> >thingy....  i can't see why this wouldn't work, as long as the spacer
> >was toleranced well and was very flat so as not to change the camber
> >setting.  well?  why wouldn't this work?  it would keep the bearing load
> >the same and would improve the looks of the car too...  anybody ever try
> >this, done this?
> >
> >chris
> >86 16V scirocco
> >
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--
Jim Buck
1990 Passat Wagon 2.0 16v
1987 Scirocco 16v "lil 109"
1982 Rabbit Convertible **FOR SALE** http://www.mixi.net/~vwpride/cabbie.htm

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