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  1. #1

    Join Date
    Mar 2005
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    BexleyheathKent, UNITED KINGDOM
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    Motor for F4 70mm Fan Unit

    My Order Number: yhst-17210252890263-136047

    Please could somebody advise me as to the specification or model number of a motor to suit the 70mm fan unit supplied in the kit version of the F4.

    The motor - part number 93A04-09 does not appear to be listed on the Nitro Models Website.

    Whilst I can probably size the motor I would like to ensure that I get one with the correct 'KV'. My guess is KV= 3600 with a 14.8V 2200 mAhr LiPo.

    A recommendation for the speed controller rating would also be helpful.

    Finally - Do people upgrade the fan unit? Are there any suitable fan units to optimise performance and reliability? Would a Lander metal fan be too heavy?

    Thank you in advance


  2. #2
    opjose's Avatar
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    Nov 2005
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    RE: Motor for F4 70mm Fan Unit

    I've been replacing the default 70mm motor with these:

    Click me!

    Though I find nothing wrong with the default motor, the replacement one above produces more power and fits nicely in the default EDF unit.

    To answer your question, yes the metal fan adds too much weight to this plane IMHO nor is it needed.

    There is an art . . . to flying. The knack lies in learning how to throw yourself at the ground and miss.

  3. #3

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    RE: Motor for F4 70mm Fan Unit

    Thanks, I now have one on order.


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