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600/700 tail mod.

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  • #1

    600/700 tail mod.

    I did add to the '600LE down' post last night, but thought I would start a new thread with this information for those who have not seen my post.

    Having read about the few problems that people have had of late with failing bolts on the blade grips, I purchased this kit from FL to fit to my LE.

    Fast Lad Performance

    When I got the kit, these were the following instructions:

    http://www.kdedirect.com/files/AT600...on_Diagram.PDF

    This is a picture of mine installed, and you can just see the additional bearing in the blade grip.



    This has reduced almost all of the slop in the tail grips and control links. For the interest of those just wanting to do the additional bearing mod to the alloy grips, the bearing size is 3mm I.D. x 10mm O.D. x 4mm wide, and the replacement bolt is M3 x 0.5 x 12mm.
    Henseleit TDR V-Bar x2
    SAB Goblin 700 V-Bar
    SAB Black Nitro V-Bar YS91 Tareq SRX
    T-Rex 700e DFC V-Bar
    T-Rex 700N MAJ DFC V-Bar YS91 Tareq SRX
    Synergy N7 V-Bar OS105 HZ-R
    Synergy E7se V-Bar
    Synergy N5c FBL V-Bar
    Gaui NX7 V-Bar YS91 Tareq SRX
    T-Rex 550 E FBL V-Bar
    Gaui NX4 V-Bar
    V-Control

    Proud owner of TWO!! Platinum Stars!
    Tags: None
  • #2
    I'm using this kit on both my 700's... Well worth it IMO...

    Comment

    • #3
      It looks to of taken out all the slop because it looks like both bearings are now being crushed by the bolt. What stops you from over tightening the new 12mm bolt?

      Did you stick the inner race of that bearing to the bolt so it can't wear the bolt down?
      Member of Mk Heli Club



      GRAMMAR: The difference between knowing your shit and knowing you're shit!

      Comment

      • #4
        Just make sure you clean out the threads on both the bolt and hub, use lock tight and just 'snug' up the bolts. They really dont have to be tightened up really tight, as that is what stresses the bolts. I have spent many years working on RC Cars and my motorbikes to know how to 'feel' how tight to do bolts up.
        Henseleit TDR V-Bar x2
        SAB Goblin 700 V-Bar
        SAB Black Nitro V-Bar YS91 Tareq SRX
        T-Rex 700e DFC V-Bar
        T-Rex 700N MAJ DFC V-Bar YS91 Tareq SRX
        Synergy N7 V-Bar OS105 HZ-R
        Synergy E7se V-Bar
        Synergy N5c FBL V-Bar
        Gaui NX7 V-Bar YS91 Tareq SRX
        T-Rex 550 E FBL V-Bar
        Gaui NX4 V-Bar
        V-Control

        Proud owner of TWO!! Platinum Stars!

        Comment

        • #5
          They really dont have to be tightened up really tight
          No they don't but the pratt at Align who puts the hubs together for us doesn't understand that. On my 700 the bolts were done up too tight and were damaged.
          Member of Mk Heli Club



          GRAMMAR: The difference between knowing your shit and knowing you're shit!

          Comment

          • #6
            Your right, still cheap pay gets you cheap work. I would rather none of the kit was built. I only pull it apart straight away anyway to grease, lock tight etc..

            Dont risk your bolts, get them replaced with 12.9 HT bolts. Model fixings sell them, or a local industrial fixings suppliers.
            Henseleit TDR V-Bar x2
            SAB Goblin 700 V-Bar
            SAB Black Nitro V-Bar YS91 Tareq SRX
            T-Rex 700e DFC V-Bar
            T-Rex 700N MAJ DFC V-Bar YS91 Tareq SRX
            Synergy N7 V-Bar OS105 HZ-R
            Synergy E7se V-Bar
            Synergy N5c FBL V-Bar
            Gaui NX7 V-Bar YS91 Tareq SRX
            T-Rex 550 E FBL V-Bar
            Gaui NX4 V-Bar
            V-Control

            Proud owner of TWO!! Platinum Stars!

            Comment

            • #7
              Been reading through this and the other thread mentioned previously, whilst I can't claim to be a manic 3D ace I do like speed and wasn't aware of this issue!

              Maybe I've been lucky thus far but I will be changing to the mod asap and will bear in mind what's been said about the required tightness on those bolts!

              Cheers a very interesting thread

              John
              http://www.youtube.com/heliclown

              Pleased To Be Awarded Four

              Comment

              • #8
                Originally posted by Rctintin View Post
                Your right, still cheap pay gets you cheap work. I would rather none of the kit was built. I only pull it apart straight away anyway to grease, lock tight etc..

                Dont risk your bolts, get them replaced with 12.9 HT bolts. Model fixings sell them, or a local industrial fixings suppliers.
                I find locating the "correct bolt" at Modelfixings a nightmare, because there are so many. Do you have a link for the bolt you used please Rob?
                Mike
                TRex 600NSP, OS55, MicroBeast
                TRex 500ESP
                TRex 450Sport,TT, Scorpion 2221/8,
                Futaba 14SG Optifuel 20%
                Member RCHA BMFA BMAC BALPA BARC

                Comment

                • #9
                  Here you go mate:

                  H.T Steel Cap Screws
                  Henseleit TDR V-Bar x2
                  SAB Goblin 700 V-Bar
                  SAB Black Nitro V-Bar YS91 Tareq SRX
                  T-Rex 700e DFC V-Bar
                  T-Rex 700N MAJ DFC V-Bar YS91 Tareq SRX
                  Synergy N7 V-Bar OS105 HZ-R
                  Synergy E7se V-Bar
                  Synergy N5c FBL V-Bar
                  Gaui NX7 V-Bar YS91 Tareq SRX
                  T-Rex 550 E FBL V-Bar
                  Gaui NX4 V-Bar
                  V-Control

                  Proud owner of TWO!! Platinum Stars!

                  Comment

                  • #10
                    I've just ordered a pair of bearings and the m3x12 cap head HT bolts to do the tail on my 700, just not worth the risk for the sake of £3! Cheers Rob

                    Comment

                    • #11
                      Is this mainly a 700 snag, or does it also apply to the 600?
                      Mike
                      TRex 600NSP, OS55, MicroBeast
                      TRex 500ESP
                      TRex 450Sport,TT, Scorpion 2221/8,
                      Futaba 14SG Optifuel 20%
                      Member RCHA BMFA BMAC BALPA BARC

                      Comment

                      • #12
                        Being that the grips are the same on the 600, and Tim had it happen on his new 600LE, I'd say its firmly a problem on both!

                        Comment

                        • #13
                          Originally posted by jamiem View Post
                          Being that the grips are the same on the 600, and Tim had it happen on his new 600LE, I'd say its firmly a problem on both!
                          I was wondering what all the fuss was until I came to assembling my LE tail. Mine were very tightly screwed in so I will replacing these after reviewing this and adding the second set of bearings.

                          To be honest I think 1/2 the problem is that the thread in the grip hub is not deap enough allowing too much play with the bolt fully tightened - probably why the factory chimps are tightening them up too much in the first place.
                          450 Sport * 2
                          600LE on the way

                          Comment

                          • #14
                            Done this mod to mine too now

                            Definitely recommend it.
                            x 3

                            Comment

                            • #15
                              Great mod will look into this and see what I have in my stock to do it!

                              Rctintin what tail rotor control arm is that you have on there doesn't look like the Align upgrade...?
                              KEVIN
                              Trex 500ESP | Trex 600NSP | Trex 700 Helibug | MA Spectra G

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