ORIGINAL: k_jitsu
Pe,
didn't you found leaks or doubts in the transition? no "punch" effect at certain rpms?
Is the r3 a double cone type?
Thanks
With the smallish 24x10 prop there were no dead spots whatsoever at the 14"header length combined with the RE3 tuned pipe.
This was not my engine. I ran it for a customer, so I had to be careful. The test stand data, whilst providing a general feel for the engine, are not the same as in a plane where the engine is loaded even less.
MTW pipes are of double cone design.
For full test data, see
http://prme.nl/forum/viewtopic.php?t=213