"TOG@Toil" wrote in message
...
On 6 Mar, 14:15, Mark Olson wrote:
Wicked Uncle Nigel wrote:
You'd need to boost the low and midrange torque to swing a prop, as
props rotate relatively slowly, don't they? I think a 'Busa engine
would last forever is detuned to 130bhp.

Depends on the prop, but I would think that gearing down would be the
way to go.

If you're forced to use a higher-revving engine, yes- but gearboxes
or belts and cogs introduce problems of their own, which is why a
relatively large displacement slow-revving engine (which doesn't need
four valves/cylinder, multiple chain drive cams with cam chain
tensioners, etc.) makes a lot of sense for aircraft.

Which was what I was thinking. I mean, what was max revs for a Merlin?

Googles

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

Hmm, some more...

By that line of reasoning, turbines should be really problematic.
No wonder FAA requires additional certification for pilots to fly turbine
aircraft.

Peter :-))))