Originally Posted by
KLXMASTER14
David,
I was getting 15K with the 11x7, and 14,200 with the 11x8. 15% Cool Power fuel. 10cc Mac's Quite Pipe. Very thirsty. No engine mods.
BTW, it REALLY ripped on 30% heli fuel!
-Robert
Robert,
thanks - much appreciated. Were you burning about 1.6 oz/min or more than that?
The Speed/13 on an "un-tuned" stock NR pipe setup is clocking 13,500 on 10% Omega fuel (3 oz castor added) - APC 11x7. I figure that once tuned, on 15% fuel it could turn another 1000. So the difference between a modern RE 61 and SE 65 is about 500 rpm. Amazingly, the NR will turn on the same un-tuned 10% setup 14,500 on a Rev-Up 11x7.50 and 14,955 on a Rev-Up 11x7.25!
Lower inertial prop mass I suppose despite the slightly higher pitches...
These are my figures but others have done better; mostly on tuned setups though.
David