fixed length of the runners and add the lengths from this chart
for any RPM between 6000 and 9000.

Paul Lamar

****Hi Paul, I have a bit of trouble scaling this diagram; if the sliding
trombone is at its minimum length here; then is the following example correct?

 The the fixed length is about 350mm(14 in for F.Flintstone).So for say, optimum
torque at 7500rpm [7000-8000]we add100mm for a total bellmouth to port inner lip
length of 450mm (18inFF).

Perhaps,with all your fancy rhino stuff etc, maybe you could give an accurate
fixed length for us to base our arithmetic on?

Thanks for all this info, I "get" most of it, most of the time, but now and
again, I loose the plot. BR, Dave McC

Tha'ts close enough. Rhino would not help as you cannot load a gif or jpg
and treat it as a drawing. Jerry used some other program.

Best to take the jpg to a copy shop and have it blown up to near full size
and print it out. Then scale off it.

Paul Lamar
 
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