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Actually, Ernest had the opposite situation. Too
little prop load meant he could spin it at any "almost" rpm without opening the
throttle very much -ergo low manifold pressure, low power.
My impression was that his rpm could have gone much
higher - if he had not had an rpm limiter in his system.
When I remove my prop, my engine will spin over 5000 rpm
at the normal idle setting - no load = no power required = low manifold pressure
required.
I am still very eager to see what type of data, Ernest can
provide once the engine is properly loaded when he adjusts the pitch of his prop
blades.
Ed
Sent: Friday, June 17, 2011 7:10 PM
Subject: [FlyRotary] Re: Blower does work
If the prop load was
maxed out, the rpm would not increase, but the MAP could go up. It sounds,
tho, like this might not have been the case since Earnest felt the prop was not
pulling.
Bill
B
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Tracy
Sent: Friday, June 17, 2011 7:01
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Blower does
work
Why
wouldn't you expect the map to go up when you have a blower pressurizing
it?
Well, if the MAP was
actually higher, the engine would be making more power. It wasn't because
the rpm in both cases was the same. That's why I'm confused by the graph
if it really is MAP ( Manifold Absolute Pressure) you are measuring.
Why wouldn't you expect the map to go up when you
have a blower pressurizing
it?
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