On Mar 6, 6:30*pm, Brian Whatcott wrote:
TOG@Toil wrote:
... *I mean, what was max revs for a Merlin?

Googles

Hm. About 3000rpm. Just off tickover for a 'Busa.

I THINK that was the prop shaft - like many other aero recips
it's limited by 0.9 c at the prop tips at the top end of the tach.
But the crank was driven by pistons breathing gas though a duplex
compressor system - driving a PRU.
Then again - in War mode its overhaul time was measured
in the hours you can count on one to two hands.
* Low compression heads on the Merlin
were the choice for civil airliners post war.

Brian W

..9C!!!! I've heard of a Warp Drive propeller but 90% the speed of
light! Wow.