>>Would the extra RPM'S and Cubic inches allow for rated HP at higher
altitudes? Maybe. The problem with fixed pitch prop installations is that you almost never achieve rated power. The only way to legally get 85 hp out of a C85 is at sea level on a standard day at full throttle with a steady state RPM of 2575. Any slower or any less throttle and power is less. When you're climbing, the RPM is always lower than redline, hence less power. The O200 crank will give you more RPM, but still not redline, unless you climb at a very high airspeed/low climb rate, so still less than 85 hp. So, it's unlikely you'll get full rated power at any altitude, but you will get more power than you would without the mod, at any altitude. TMSAISTI John Cooper, A&P Skyport Services PO Box 249 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 Fax 518 797-3865 www.skyportservices.net _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, October 22, 2007 6:33 PM To: [EMAIL PROTECTED]; [email protected] Subject: Re: [ercoupe-tech] O200 Crank on a C85 In a message dated 10/22/2007 5:45:18 P.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: >Any idea how much climb rate improvement might be seen? Hard to say. Probably what you'd expect from a C90, whatever that might be. Basically, it's like a C90 except the power comes at a slightly higher RPM. Would the extra RPM'S and Cubic inches allow for rated HP at higher altitudes? John _____ See what's new at AOL.com <http://www.aol.com?NCID=AOLCMP00300000001170> and Make AOL Your <http://www.aol.com/mksplash.adp?NCID=AOLCMP00300000001169> Homepage.
