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600nsp build tip.

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  • 600nsp build tip.

    Well after crashing and repairing my 600 nsp I managed to fix a niggle I had with it all along.

    From new I noticed that there was a very slight "wobble" I could just about see on the head button as the head spooled up/down. I'd pondered this point at length and ended up deciding I was just being too fussy and it must have been manufacturing tolerances. (First kit build so no real experience here!)

    Anyway I finally got rid of the wobble, what caused it? Over tightening of the top jesus bolt! When re-assembling I spun up the head by hand and the wobble is gone if I don't tighten up the top jesus bolt too much!

    I guess this bolt doesn't need to be super tight. After all carries all loads in "sheer". The nut on the end is just to stop it flying off!

    There is no detectable "play" in the head with this bolt not tightened up as much used to have it! So I guess it's all good?


    Cheers
    Rob

  • #2
    Originally posted by trebor27 View Post
    Anyway I finally got rid of the wobble, what caused it? Over tightening of the top jesus bolt!

    Never heard of that one before Rob.

    Still its sorted now mate.

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    • #3
      Maybe you put it on the shaft 180 degrees different?
      It is easy to overtighten m3 and m4 bolts. If you look up the max torque for these sizes it is not very high.
      www.heli-extreme.co.uk a good club in south Sheffield
      600n pro BeastX Align DFC head bls251, 3xbls451, align gov, 600d, 2in1
      trex500, BeastX DS510 swash, Beast X cutr and carve head DS520 HK3026-1900, Align 425D blades, 5S4200 rev'trix, K&BDD dampers, AR6200
      "450" superframeSTK, align DFC head v2tail, hk22281-8 on 3S 9650w9257gear commander 55A align 325D hitec digitals Tarot ZYX, AR6100e
      MCPX kbdd tail and blades, miniaviation bats

      Dont spend more flying models than it costs to fly for real

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      • #4
        Hey moyesboy,

        I'd not thought of that! It's entirely possible!

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