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  1. #1

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    MQ-9 Reaper help / advice

    hey guys i just got a MQ-9 reaper from nitro plane and im going to put a nitro motor inplace of the electric one. I put one of my really old .20 engines where i wanna put it but does anyone know if someone makes a shaft extension or something that would work for my problem? I really dont wanna mount the engine all the way in the back because of the weight and i dont really wanna cut into the top. also does anyone know what size engine i should use?
    I have alot of other questions but lets start here and see where it goes
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  2. #2

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    RE: MQ-9 Reaper help / advice

    BTW its about 4 1/2 inches from where u mount the prop on the engine to where it has to exit the back




  3. #3
    Kmot's Avatar
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    RE: MQ-9 Reaper help / advice

    Cool project!

    I don't know if there is a commercially made off the shelf extension that would be the exact size and length you need. However, one could be made easily by anyone with a hobby lathe. You would probably need to add a bulkhead where the shaft exits the fuselage that has a bearing installed to support the shaft at that area. And the shaft would have to be tapered at the end so that a propeller drive hub could seat on it and then of course the very end threaded for the nut.
    ~Tom~

  4. #4
    Mr Cox's Avatar
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    RE: MQ-9 Reaper help / advice

    I can't image that it would worth the effort to make an extension of the prop shaft. You would just add a lot of weight in the rear of the plane. Best would be to use a lightweight engine I guess and mount it were it needs to be in order for the prop to clear the fuse. Cooling can be problematic with rear mounted engines so I guess you are better off the head sticking out in to the little airflow that there is.


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