MrNomad
Well Known Member
Building an RV9A, Superior O-360, which means 7A cowl.
The plan calls for a hole in the firewall to accomodate the front main gear leg bolt where it attaches to the engine mount. Thanks to the engine mount shims I can slip a castle nut & cotter pin on the end of the AN5 bolt and prefer not to make another hole in the firewall. The castle and the end of the AN5 bolt rubs (just a bit) against the firewall.
Comments please?
Second, hole # C is dreadfully close to the fuel pump mount and the cable will surely rub up against the fuel line. Why not place hole #C 3/4" to the left?
What are the ramifications of such relocation?
Third, I plan to paint the plane before first flight using the engine mount as part of the rotisserie. For rotisserie purposes, the engine will be off and we'll weld up a jig that fits the dynafocal array.
Before I add carb & exhaust to the 360, I plan to bolt the engine to the mount, fit the cowl, stripe for paint, then remove cowl & engine, and then paint.
Question: Will the later addition of carb and exhaust necessitate additional cuts to the cowl, thereby screwing up my paint?
Last: What methods have others used to compensate for engine sag and therefore, cowl misalignment after 10-15 hours of flight?
Thanks. We started on June 1, hope to be done by Dec, work on it every day, and have a helper 4 hours per day.
The plan calls for a hole in the firewall to accomodate the front main gear leg bolt where it attaches to the engine mount. Thanks to the engine mount shims I can slip a castle nut & cotter pin on the end of the AN5 bolt and prefer not to make another hole in the firewall. The castle and the end of the AN5 bolt rubs (just a bit) against the firewall.
Comments please?
Second, hole # C is dreadfully close to the fuel pump mount and the cable will surely rub up against the fuel line. Why not place hole #C 3/4" to the left?
What are the ramifications of such relocation?
Third, I plan to paint the plane before first flight using the engine mount as part of the rotisserie. For rotisserie purposes, the engine will be off and we'll weld up a jig that fits the dynafocal array.
Before I add carb & exhaust to the 360, I plan to bolt the engine to the mount, fit the cowl, stripe for paint, then remove cowl & engine, and then paint.
Question: Will the later addition of carb and exhaust necessitate additional cuts to the cowl, thereby screwing up my paint?
Last: What methods have others used to compensate for engine sag and therefore, cowl misalignment after 10-15 hours of flight?
Thanks. We started on June 1, hope to be done by Dec, work on it every day, and have a helper 4 hours per day.