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Date: Mon, 17 Nov 2003 23:22:10 -0000
From: "**-**" <>
Subject: Re: Failiure On Track

"Dexter J" <> wrote in message > Salutations: > > On Mon, 17 Nov 2003 22:40:30 -0000, **-** <> wrote: > > > > Well it lost a lot of drag by flatting the bottom off. A spoiler wouldn't > > really make it anymore aerodynamic, the ones on the Pikes Peakes cars are > > that big because their racing up hill into thinner air and need to keep > > the > > front of the car down as much as possible. By its design a spoiler > > "spoiles" > > the flow of air over the vehicle to reduce the pressure build up and kill > > lift. As it is and current expected power output it should be good for > > just > > over 170mph, providing bits and bobs like bonnets and lights are taped up > > well. Just need to keep everything crossed for a still windless dry day > > in > > early Dec now. > > > > Matt > > I'm so outta touch on the racing scene I think my firesuit doesn't even > make the dating spec anymore more - but - have you tried to vent air up > through the back of the hood over the windscreen yet?.. > > I saw it done on a 99 turbo once on a GT machine to allow for a full > length skid plate. In your case it might allow for two opposing length > surfaces under the car and perhaps offset some of that 'big nose' pwob you > were mentioning.. Its a good idea and one I looked into, at the moment though the single lengh non stepped undertray has a bit more development to run and should be fine for this application. Hopefully I can overcome the 'big nose' issue with enough brute force ;-) > > You are completely correct to be concerned about it all getting out of > shape at 150+ - Indeed I somehow doubt Saab ever wind tunneled it to more than 140mph and we all know how flat bottoms react when they get some pressure under them ;-) >I would be recording tire temps after runs to see if you > are getting proud of the surface unevenly back to front.. Tyre temps are consistant nothing more than the odd degree out and never the same tyre reading high/low. > > My 2cents - and yes - where is brother Grunff?! He'd know what to do about > my wreck.. > > -- > > J Dexter - webmaster - > all tunes - no cookies no subscription no weather no ads > no news no phone in - RealAudio 8+ Required - all the Time > > Radio Free Dexterdyne Top Tune o'be-do-da-day > Nelson Charles - Seven Spanish Angels >

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