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Re: Rear Wheel lift

To: Rocky Entriken <rocky@tri.net>
Subject: Re: Rear Wheel lift
From: bob bownes <bownes@web9.com>
Date: Thu, 07 Feb 2002 14:00:44 -0800
The road racing corollary:

Go in slow, come out fast. Go in fast, come out dead.



Rocky Entriken wrote:
> 
> Having no idea of Scott's experience level or driving style, I want to offer
> one different view:
> 
> It ain't all about the equipment you have on the car.
> 
> Perhaps you can slow down to go faster.
> 
> I had an epiphany of sorts at the 2000 Solo II Nationals, after seeing some
> photos of myself in a key corner that were taken by the trackside photog
> there. He caught me in the same place on two different runs. On one (first
> run) I had major rear wheel lift. On the other (third run) I did not. And I
> was 1.6 seconds quicker on the third run.
> 
> The car is a Mk. I Spitfire,  D Prepared in Solo, G Prod in road racing. And
> yeah, it has a welded-up rear so wheelspin is not really my problem.
> 
> The difference? On the third run I backed off sooner for the entry to the
> corner, got on the gas sooner and was accelerating through and out of the
> turn.
> 
> When I came hard into the corner and was still braking heavy as I turned in,
> I got that inside rear wheel way up in the sky. Made for a really
> spectacular photo, but I could also see the error in technique. Already into
> the turn, I was still trying to get slowed down.
> 
> When I got my braking done earlier, when I was shot at that same spot in the
> corner the car was flat, all four on the ground, and actually looking very
> un-spectacular ... but demonstrably faster.
> 
> Not so easy to do. Man, you just KNOW you can go deeper into that corner.
> Yeah, you can, but then it takes longer to get back out of it again, and
> that is the key.
> 
> I'd attach the photos, but Mark's program would just strip them. [That's not
> a complaint; it strips all kinds of bad stuff too! :-) ]
> 
> --Rocky Entriken
> 
> ----- Original Message -----
> From: "Barr, Scott" <sbarr@mccarty-law.com>
> To: <fot@autox.team.net>
> Sent: Thursday, February 07, 2002 10:11 AM
> Subject: RE: Rear Wheel lift
> 
> > Joe and all,
> >
> > On my rotoflex GT6 (same rear suspension as Joe's SuperSpit Tiny Tim), I
> > replaced my 5/8ths bar with the 7/8ths bar last year, with no real effect
> on
> > the wheelspin while in right-hand turns.  It does corner flatter, but the
> > drive wheel still spins, both on short sharp turns (such as Blackhawk
> Farms'
> > turn 3A) and carousel turns (such as Blackhawk Farms turn 3).  My current
> > theory (W.A.G.) is that the weight transfer still occurs, causing loss of
> > traction at the right/rear wheel, regardless of the flatter cornering
> > attitude.  Still reading through Mr. Puhn's book to figure this out.
> >
> > But, point is, the 7/8ths bar didn't help me.  Perhaps with Tiny Tim's
> > lighter engine, the result would be different.
> >
> > Scott Barr
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Joe Curry [mailto:spitlist@gte.net]
> > Sent: Wednesday, February 06, 2002 7:08 PM
> > To: Friends of Triumph
> > Subject: Re: Rear Wheel lift
> >
> >
> > John and Ted,
> >
> > It appears that my next step is to put the 7/8" swaybar on the front
> > (replacing the 5/8" one) and see what the result is at next Sunday's
> event.
> >
> > Thanks for the tips.  I'll let you know how it goes!
> >
> > Joe
> >
> > John Price wrote:
> > >
> > > Joe:
> > >
> > >    It depends on what your spring rates are and what kind of sway bar
> you
> > > have in the front. As near as I can tell from my research, the options
> > would
> > > be stiffer springs/larger sway bar in the front or softer
> springs/smaller
> > > sway bar in the rear. I am fighting the same battles with my TVR
> > >
> > > John

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