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Bill Biggs wrote:
> Here is where he very clearly
advises a member to cruise
> a C75 at 2500
RPM
But
what you quoted Bill Bayne as saying was:
> With this prop at 2275 RPM you
should cruise at 109 MPH
> and be flat out at 122 MPH turning
2500.
I can see how you thought he might be recommending cruising
over max rpm but please look at his exact words, “cruise at 109 MPH and be flat out at 122 MPH turning 2500.”
Those words don’t say to cruise at 2500 rpm but they acknowledge that you
can go faster than red-line – but, nowhere does it advocate cruising over red-line.
Overall, I think the point Bill Bayne was working on has
validity: Fred Weick chose a prop for the early post-war Coupes’ C-75
that gets maximum performance from the engine – so much performance that “upgrading”
to the C-85 is hardly worthwhile.
Ed Burkhead
http://edburkhead.com
ed -at-
edburkhead???.com (change
-at- to @ and remove "???")
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