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Old Mar 10, 2010 | 08:42 PM
  #66 (permalink)  
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downwardspiral
Senior Member
Joined: Jan 2008
Posts: 2,008
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From: Long Island, NY
Default Re: The truth about "ram air"

Originally Posted by Franc Rauscher
LOL my friend LOL

Look, we are not testing drag coefficients here. And besides, I only have 192.5 HP at the wheel. So my nose, delicate and beautiful sensory instrument that it is, stays well inside.

3/16" dia pitot tube 12" out in front of the grill. Then 15 feet of 3/8 dia hose back to the meter. Got 3" of water @ 60 MPH and 5" of water @ 80 MPH. Then the tuck tape came loose and my needle did a jig.

I got 1" just driving across the parking lot in 2nd. That surprised me.

Real tests tomorrow.
3/16" pitot inside grill, pitot outside grill
1.0" pitot inside, and outside
3.0" dia PVC with a 4.0" long horn in free air stream
3.0" dia PVC with a 24.0" long horn in free air stream
3.0" dia PVC with a 4.0" long horn at top of windshield where air is high pressure.

My inH2O meter is calibrated to 15 inches.

I do not have a properly calibrated flow measuring device but will use a medical flowmeter.

We may or may not get to Texas Thursday nite but by golly I will have collected a pile of useless data with which we can continue irritating the PHD's (real or imagined) on the Forum.


roadster with a stick

BTW, I liked your dancing old fart better
What was the temperature of the air ? I'd also like to see what the stock airbox would do as a baseline.
 

Last edited by downwardspiral; Mar 10, 2010 at 08:45 PM.
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