Cardiff Kook
PATRON
Sisters, OR
You push the throttle in. Manifold pressure goes up. % bhp increases. Makes sense.
Why does adjusting RPM change BHP? Doesnt that just change the pitch of the prop which makes it harder/easier for the prop to turn?
RPM is prop rpm only, correct? The crankshaft speed is completely independent? Or is that where I have things wrong?
At a certain mp the crankshaft spins at some speed. The speed the prop spins is then governed by the prop governor.
Decreasing RPM creates more load on the engine- but why would it decrease BHP?
At a fixed mp, decreasing rpm decreases % BHP- but isnt it bad to run at say 25 MP and 2100 RPM in a 185 with a 550, say? But the %bhp i think is pretty low at that setting?
Why does adjusting RPM change BHP? Doesnt that just change the pitch of the prop which makes it harder/easier for the prop to turn?
RPM is prop rpm only, correct? The crankshaft speed is completely independent? Or is that where I have things wrong?
At a certain mp the crankshaft spins at some speed. The speed the prop spins is then governed by the prop governor.
Decreasing RPM creates more load on the engine- but why would it decrease BHP?
At a fixed mp, decreasing rpm decreases % BHP- but isnt it bad to run at say 25 MP and 2100 RPM in a 185 with a 550, say? But the %bhp i think is pretty low at that setting?