Since you all seem to be discussing why I would do something, I figure I'll
chime in. Why would I do such a thing as put the exhaust pipes out the side
of the front spoiler? Well, first off, building the down pipes were a LOT
simpler. That's number 1. Thrust is another consideration albeit small:
each exhause is flowing about 450 cfm at 1300 degrees F so the speed should
be prety high at the exit of the pipe. Thrust = mass x velocity. Small
maybe, helpful, maybe. Third is that the exhaust does not set up any kind
of barrier. And four is that the turbulence at the wheel well is pretty
high so it prolly doesn't matter anyway. Lots of turboed mustangs running
them the same way and making 160 - 180 in the quarter mile. Once it leaves
the pipe it basically is the same speed as the car, and since they point
backwards and upwards blends the exhaust with air flowing by. Unfortunately
it will add maybe 10 square inches to the frontal area with it's incumbent
drag losses.
And besides, it looks cool! When I get time, I'll post a pix on the web
site, maybe this week end.
mayf (holey air damn, and proud of it!!) :)
At 03:55 PM 12/31/99 -0500, John Beckett wrote:
>My thinking is probably the same as yours.
>
>JB
>-----Original Message-----
>From: Keith Turk <kturk@ala.net>
>To: land-speed@autox.team.net <land-speed@autox.team.net>
>Date: Sunday, December 26, 1999 9:24 PM
>Subject: Exhaust exits
>
>
>>I was up visiting Mayf here last week and he had finished the air Damn on
>>the Sunbeam... he has the Turbo's plumbed out the front of the air damn
>just
>>in front of the Front Wheel....
>>
>>I was thinking that aerodynamically the air flow would be disturbed as the
>>exhaust gases would take on a Frontal area of thier own leaving the car...
>>and a rear facing exhaust has been pointed out to add VERY minimally to the
>>overall thrust of a car.... any thoughts on the subject?
>>
>>Keith (happy to have Christmas here and also glad to see it go)
>>
>
>
>
>
>
L.E. Mayfield
124 Maximillion Drive
Madison, Al. 35758-8171
1-256-837-1051
old >>>>>>>> http://www.hsv.tis.net/~mayfield
new >>>>>>>> http://home.hiwaay.net/~lemayf
DrMayf@AOL.com
lemay@hiwaay.net <<<<preferred
Sunbeam Tiger, B9471136
Sunbeam Alpine Bonneville Land Speed Racer,
'66 Hydroplane Drag Boat (390 FE)
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