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I don't have any experience with an 0-200 conversion...but realize there are good reasons for considering the conversion. Parts availablity for C-75/85...are very scarce, and the cost of a useable crankshaft, and other parts are out of site. 0-200 is a later ( read improved ?) version of the same engine, so it may make semnse to utilize the improved version. Climb rate is better due to the increased displacement......, but top speed is similar due to the required use of a prop that limits power output and speed; within the approved, safe limits of the Ercoupe airfame. If your present engine is useable, and you fly out of the lower lands...under 3000 feet msl, it would be hard to justify, just to have an 0-200.....for the increased climb rate. I get about 600 ft/min flying out of 2000 ft msl airport with my C-85. Now if you and your passenger are quite heavy....and GW approaches 1400+, then the increased climb power makes sense....to obtain an acceptable, safe climb rate. If your engine still has the tapered shaft ( as mine does), I think it makes sense when rebuilding to be sure to get a Flange shaft. Taper shafts were discontinued in about 1948.....I think because they were more suseptable to fatigue failure from use of metal props, and the resonance vibrations .... Now if you still use a wooden prop, this is not as important, as the wood prop absorbs engine pulses better. Continental's requirement is to replace the c/s and most other internal parts at the 13 year life limit...applicable to airplanes used commercially, but not required for private use, I think. I think the use of the 0-200 c/s and rods, pistons/cyl STC makes sense, utilizing the old Crankcase.......BUT a mid time complete 0-200 may be less expensive... The 0-200 camshaft ---(Please correct my misconception) does not have a fuel pump cam...so an electric fuel pump must be utilized. Cost includes the STC, the engine or parts, and the new prop in the case of the 0-200. I don't know if a new prop is required when utilizing the STC for 0-200 C/S replacement in an old case, but I suspect it is...again to limit performance to the design limits of the Ecoupe airframe. I expect one could easily spend $10,000 to build and install a completely rebuilt 0-200 engine....perhaps $ 2000 more than rebuilding the C-85 ????? Comments ?? REgards, Harry Francis Blacksburg, VA. --------------------------------- to unsubscribe send mailto:[EMAIL PROTECTED] ____________________________________________________________ T O P I C A -- Learn More. Surf Less. Newsletters, Tips and Discussions on Topics You Choose. http://www.topica.com/partner/tag01
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