OK, girls, let me put my two cents worth in. I changed the venturi and the jet in my carbuerator to the C-85 size and got the increased RPM without changing props. Horse power and RPM are related, no increase in rpm no increase in horse power. Jim N87349 -----Original Message----- From: John Cooper <[EMAIL PROTECTED]> To: [email protected] <[email protected]> Date: Wednesday, December 29, 1999 11:22 AM Subject: Re: [COUPERS] Take off / landing performance
In a message dated 99-12-29 10:18:32 EST, you write: > As you know, the only > significance between the 75 and the 85 is the RPM. The prop is what gives > you the > extra revs. I would think that going down to a 46 would mean you really > have to watch The C-75 has a smaller carburator throat. That is the ONLY physical difference and the 75 simply can't breath well enough to make 85 hp, no matter how high you get it to rev. (finer pitch results in lower prop loading so your higher revs are at reduced manifold pressure, hence lower power.) Continental approved conversion to 85 HP: change carb. Many C-85 installations call for the 7148 as the standard prop. 46 is climb and 50 is cruise. John __________________________________________________________________________ __ ____ To unsubscribe from this list please send mail to [EMAIL PROTECTED] _____________________________________________________________ Get your favorite topic delivered daily. http://www.topica.com/t/11 __________________________________________________________________________ ______ To unsubscribe from this list please send mail to [EMAIL PROTECTED] _____________________________________________________________ Get your favorite topic delivered daily. http://www.topica.com/t/11
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