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  1. #1

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    Nov 2008
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    Profile engine mount

    I'm making a profile plane that will have a 25cc converted Homelite engine. The fuselage will be a
    sandwich of 5/32" plywood to 15/16" extruded polystyrene foam. I'm thinking of mounting the engine to the fuselage with 1.5" x 1/8" aluminum angle using 3 bolts (will also support the landing gear). The 1 1/8" dowels will be epoxied in between the plywood to support the engine. Will this be strong enough?

    Jeff
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  2. #2
    kenh3497's Avatar
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    RE: Profile engine mount

    If that engine is a vibrator I would double up on the ply at the nose to about 1/3 of the wing. From the canopy back it could be cut at an angle from the canopy to the wing saddle to save a bit of weight and help prevent stress risers. The dowels for the engine mount is a very good idea and an absolute must. Looks good so far. As a second thought you might consider solid wood all the way through in the engine area. Maybe somebody else will pipe in with better ideas than me.

    Ken
    Sent from my Dry-Erase-Board

  3. #3

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    RE: Profile engine mount

    I may add fiberglass cloth between the foam and plywood (just in the engine area). I could always add glass to the outside surface of the plywood as well.

    Jeff


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