David Munday wrote:

On Sun, 14 Feb 1999 15:32:57 -0800, Paul wrote:

There is another minor change inside the rotor housing. Some of the
material
is removed around the spark plug bosses to improve cooling but
the R-Beat modification does the same thing.

Just for academic reasons I would have a couple of dozen temp gages all
over that engine :-)

Well I just bought a 13B Turbo motor which came wrapped in an '87 RX7
test mule.  I plan to put temp gages all over as well as pressure
gages and anything else I can think of.   Where would you think gaging
is most important?

One of my goals is to investigate your position that the stock turbo
is unsuitable for high sustained power settings.  How would I most
quickly prove you right (or wrong as the case may turn out?)  It'll
likely be a few weeks before I get the thing on the road.  I want to
go through the whole car while I still have Dr. Frankenstein's Swedish
Meatball as a daily driver.  I may not get all the instrumentation in
at first either, though I want to start thinking about how to fully
instrument it.

--
David Munday  -  mundayde@muohio.noise.edu
My email address is not noisy.
Webpage: http://www.nku.edu/~munday
PP-ASEL  -  Tandem Flybaby Builder  -  EAA-284 (Waynesville, OH)
"Adopt, Adapt, and Improve" -- Motto of the Round Table

Oh I love these kinds of questions. 

My answers shock the heck out of everybody.
First thing you do is find yourself a trailer. Build an eight foot high
eight foot wide wall and mount it on the trailer perpendicular
to the airstream. The dynamic pressure at 50 MPH is about 6.5 pounds
per square foot.  50 MPH is 73 feet per second so 64 square feet times
6.5 pounds per square foot times 73 feet per second is 30,368 pounds
feet per second. Dividing by 550 pounds feet per second or one
HP gives me 55 HP. 

Not enough! since the car itself will only need about
20 so that is only 75 HP total. 

You need to drag that trailer a little faster. 

60 MPH or 88 FPS gives a dynamic pressure of 9.36 and a 
HP consumption of 95 HP and 25 for the car or 120 HP. 
That ought to do it. 

Sell advertising on the wall. :-)  

What are you going to do for a cooling system?	 
 
Paul Lamar
 
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