Engine mount drawing for C-65 on Corvair fuselage

[Sonex1517]

As part of our EAA 461 project, we have a Continental C-65, and a fuselage that was built for a Corvair. We found the C-65 mount drawing in the plans, but realized that for our fuselage, we need to move the engine forward.

Does anyone have a drawing for such a mount?

[danoliver]

I've read about folks extending their mounts forward a lot. It''s mentioned in William Wynns Weight and Balance book. Not sure if everyone is just making them per the drawings but extending them a bit or if you have to increase the tubing size or even add in bracing. Surely someone out there who's done it successfully will chime in.

[Earl Brown]

Dan,
Extending the engine mount is mentioned in the Weight and Balance book, but it is mentioned as not being a good way to adjust the CG.

The plane is designed to have the wing move forward and backward to adjust the weight and balance.
Why wouldn't you just move the wing as back as designed? It's far more effective to move the wing back than to move the engine forward.

[Sonex1517]

I contacted William Wynne and am working with him on a solution that does not involve extending the engine mount. Thanks!

By the way - William was awesome to talk to and very happy to help. It was great to be able to talk to him