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  1. #1

    Join Date
    Feb 2007
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    OS 46AX Shaft Play

    I recently ordered an OS 46AX engine and received it via UPS last night. There is a significant amount of end play (in and out) of the prop shaft.
    When putting a little pressue on the shaft I can hear it rubbing on the back plate. I have two other OS 46AX engines and they don't have this issue.
    This doesn't sound normal - not sure if it's the bearing or something else. In the meantime I will be returning this item.

  2. #2
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    Apr 2002
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    RE: OS 46AX Shaft Play

    Put a propeller on it. When there's no propeller, the crankshaft can move fore and aft in the bearings. When you install a propeller, it will pull everything tight, and you'll only have .001"-.002" of movement when everything's new. The crank should not touch the rear cover when a propeller's installed.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com

  3. #3

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    RE: OS 46AX Shaft Play

    Thanks, that did the trick. I was a little nervous - there should probably be something in the instruction manual.


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