> Ken,
     >
     > That mount is interesting and the one that peaked my  interest the
    most I
     > must say. The frame behind the mounts appears super strong. I
    especially
     > like that you brought a pipe in tension to the Bell housing end
    of the
     > engine. This is good for a static down force obviously but I'm
    trying to
     > figure out the load paths with a side to side movement or
    negative force
     > stall. Correct me if I am wrong please but wouldn't the approx.
    35 " moment
     > still fulcrum directly at the rear rubber mounts?
     >
     > Doug


    Hi Doug,
    Yes, side loads on the engine will create side loads on the engine
    'sandwich'.  However, I will not routinely be performing any  but the
    most gentlemanly of aerobatics so the side loads will only be
    encountered if I screw up a maneuver; hopefully this won't happen
    often!  If this turns out to be a problem I think the engine will
    develope coolant leaks rather than have a catastophic failure.  I
    settled on this design because a RV-4 firewall is only 24" wide  and
    I REALLY needed to get the motor mount tubes away from  potentencial
    exhaust pipe routing.

    Ken Powell

    C150 / RV-4 under construction

I know your engine mount predates the latest s-beam/rear beam
designs.  Here is one for the
RV-4, (Paul's drawing of course.) It does clear a space for the exhaust.

Jerry Hey

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