FWIW If the back of the sunbeam looks anything like the back of a berkly the
spoiler while interesting did nothing on the berkly other than slow it down.
Every part that was removed from that 'aero device' only increased speed and
never changed any downforce in a measurable way, the car is instrumented on
all 4 corners. best run was a 260+ by ted wenze on good salt with 680 hp and
everything removed. This year it went 259 with 720 hp on bad salt with the
'spoiler' in place. I suspect all it spoils is performance. I also suspect a
carefully placed vortex generator would be way more helpful than a sail
placed perpendicular to the direction of travel. It has been also tested
with the asymetric roll cage on one side of the car to 260 by 3 different
drivers running between 240 to 260 with absolutly no comment. Personally i
would fix the 'problem' after it rears it's ugly head..
dave
> -----Original Message-----
> From: owner-land-speed@autox.team.net
> [mailto:owner-land-speed@autox.team.net]On Behalf Of Wester Potter
> Sent: Saturday, September 17, 2005 7:37 AM
> To: list LSR; Mayfield mayf
> Subject: Re: Rear Spoiler Questions
>
>
> mayf,
>
> That's why I mentioned the one I saw. It is adjustable over a decent
> range but fit against the body and was secure once it had been adjusted
> before a run. The double nuts that tightened against the turnbuckles
> on the exterior threaded side pretty much locked it into position and
> added some good stability. With that setup you could adjust for more
> spoiler on one side (opposite the driver) if you so desired. Much
> like a cavitation plate only reversed. There may be some history on
> the subject in the list archives. Seems that I remember Darrell
> Ferguson had some problems with this very thing several years back.
>
> Wes
>
> On Sep 16, 2005, at 11:37 PM, drmayf wrote:
>
> > Wes, all, I am not looking for adjustability while in motion! Just the
> > ability to adjust part of the spoiler to make the airlow over each
> > side of the car symetrical due to the roll cage. If it isnot in the
> > cards, that's ok also. But, it wold be nice to get a real rules
> > interpretation on the subject in any case. I am sure precedent has
> > already been established by some other vehicle. And I thought about
> > Smokey...
> >
> > mayf
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