I have seen one early Ercoupe and it had a 65, And I remember, correct me if I am wrong, that it carried less fuel; maybe only 14 gallons. I have forgotten the difference between an A-65 and an A-75. Post Script inserted here: Just read Wade's posting and saw that the changes are not minor but major internal differences. One thing though, is to see what prop is specified for the 65 and compare that to the prop specified for the 75. No matter what the engine is labeled (you said the man you bought it from said it is a 75 and IF IT IS ???) the prop is going to make the performance difference. If you change it to a 75 and continue to use the prop specified for the 65 you will probably see no advantage; until you install the 75 prop.
Did the 65 have an electrical system? Seems like the one I saw did not. Makes it a lot lighter. No generator, no starter, no battery, carried less fuel; all of which resulted in a good bit lighter plane. If you keep it light, put out 75 hp and use the 75 prop (which develops peak torque much sooner in the power curve than does the 85), you should see some nice improvements in performance. McCauley metal prop for the 75 is 7451(or 7351,can't remember which), for the 85 is 7150. Don't know what the Sensenich prop diameter and pitches are, here at my office, but I have their list at home. Call Sensenich in Lakeland, FLA and ask them to mail you the list of wood props and their list of metal props listing all the props for all the planes. Be sure to use a prop for the 75 if you change it to 75 hp or if it already is 75 hp and check and see which prop is on it now. If you have a metal prop, it is probably the right length for the 65 or 75, just check the pitch. Grover 99398 Columbus, GA On Tue, 23 Feb 1999 12:56:23 EST [EMAIL PROTECTED] writes: >dear fellow coupers, > > I have an old ercoupe ( serial no. 27) with the original A-65 >that runs >great and looks good. It has less than 130 hours on major overhaul. >the last >owner swears that it is a 75 , but the log book shows it to be a 65. >My >question is can it be upgraded and if it was how can i verify that? My >IA >believes it is a 65 and so do I . >With summer coming up 10 more horses would be great , can it be done? >any >Ideas? > > thanks in advance, > John Linardos > NC 28932 > benton field (redding ca) > ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]
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