November 22, 2024, 04:41:55 PM

Author Topic: Thrust Bearings Tail Rotor  (Read 3672 times)

Offline Sp00tn1k

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Thrust Bearings Tail Rotor
« on: June 29, 2014, 12:52:48 PM »
Hi Guys

I got my first Synergy after thinking about it for a long time :) Really happy with it so far!

But now I have an akward problem. I tried to get the Tail Rotor Apart, and the larger ID of the thrust bearing was like GLUED into the Bladegrip. I then decided to hammer it out, as the manual clearly shows the picture with the larger ID out of the Bladegrip. I used a hammer with a rubber flat, and tried not to hammer to violently. After some time i got it out, but the inside of the bladegrip is messed up now. The larger ID of the thrust bearing kinda scratched the aluminum and it was impossible to get it in there again. So I took the dremmel and tried to get some material away from the inside of the blade grips. But i quickly stoped again, as I didnt see any effect.

So my question is, is the inside part of the thrust bearing supposed to come out of the blade grips? Or where they the wring size? I have never seen something like this before!

Other then that, I was really happy with the build.

Cheers
David

Offline Rodney Kirstine

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Re: Thrust Bearings Tail Rotor
« Reply #1 on: June 29, 2014, 01:01:15 PM »
They do fit very tight. If you heat the blade grip up, the aluminum will expand and the thrust washer will drop right out.
Rodney

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Offline Sp00tn1k

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Re: Thrust Bearings Tail Rotor
« Reply #2 on: June 29, 2014, 01:06:13 PM »
Ok, so damn it  ;D Was to quick again, guess need to get a new blade grip and thrustbearings :P Stupidest "crash" I ever did^^

Offline Sp00tn1k

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Re: Thrust Bearings Tail Rotor
« Reply #3 on: June 29, 2014, 01:28:00 PM »
Ok for now I have put them back together. And it seems to run quite freely. Not as free as before but still pretty free. Hope this will work out like this...

Offline Dave Willis

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Re: Thrust Bearings Tail Rotor
« Reply #4 on: June 30, 2014, 09:04:56 AM »
I have the same problem. Would it be OK to sand a Little off the outer Diameter of the race?

Dave
AMA 6679
IRCHA 675
VHA11

Offline Rodney Kirstine

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Re: Thrust Bearings Tail Rotor
« Reply #5 on: June 30, 2014, 09:55:19 AM »
Personally, I wouldn't.  It doesn't take very much heat to the grip to get the thrust bearing in or out.  You can use a heat gun to do it.
Rodney

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flyalan

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Re: Thrust Bearings Tail Rotor
« Reply #6 on: June 30, 2014, 11:38:33 AM »
Another trick.  To get them out place the grips in the freezer for about 15 minutes.  Immediately after removal heat up the grip with a small blow torch or heat gun.  The bearings will take longer than the grips to heat up and expand.  Bearings usually just fall out then.  Same principle if needed putting them back in.  Cool the bearings and warm up the grips. I have never had a bearing I could not replace using this method.

Cheers

Alan

Offline Sp00tn1k

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Re: Thrust Bearings Tail Rotor
« Reply #7 on: June 30, 2014, 04:48:14 PM »
Thx for all the replies.  I didnt leave me alone, so I went to my dealer today and got a new Bladegrip.

But with this build I proof myself to be quite clumsy! Probably it is because I am watching the world cup simultaneously.  Anyways the next stupid thing I did,  was grabing the spindle with a pair of pliers and papertowel folded a couple of times,  to losen the spindle bolt.  well as you can guess, the pliers left marks on the spindle and I had to sand them down to get the bearings over them again. Do you think this may actually have an effect on the stability of the spindle shaft?  I hope not as I really dont want to go to the hobby shop again 😀

right now I fral akwardly stupid haha.  As if I had never built a heli before... 😂

Anyways thx for your support guys,  awesome!

Cheers
Dave

Offline Greg Jackson

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Re: Thrust Bearings Tail Rotor
« Reply #8 on: June 30, 2014, 05:03:35 PM »
We are all human and make mistakes.  Have you watched the synergy build video Chris made? It helped tremendously.
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Offline Rodney Kirstine

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Re: Thrust Bearings Tail Rotor
« Reply #9 on: June 30, 2014, 05:50:50 PM »
Dave,

Get yourself one of these: http://www.heliproz.com/GRPYDUO810-Grippy-Duo-for-8-10mm-Shafts-Green/productinfo/GRPYDUO810/

Super handy and they're on sale for only $7.
Rodney

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flyalan

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Re: Thrust Bearings Tail Rotor
« Reply #10 on: June 30, 2014, 07:57:07 PM »
+1 Rodney. I have the redneck grippy. Has a bottle opened in the handle. Very handy :-)

Cheers
Alan

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Offline Rodney Kirstine

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Re: Thrust Bearings Tail Rotor
« Reply #11 on: June 30, 2014, 08:02:25 PM »
Lol, that's awesome. I would have ordered that one if I had seen it.
Rodney

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flyalan

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Re: Thrust Bearings Tail Rotor
« Reply #12 on: June 30, 2014, 08:43:00 PM »
Found them two years ago at IRCHA. I think it was a Bobby Watts product.

Cheers
Alan

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Offline Sp00tn1k

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Re: Thrust Bearings Tail Rotor
« Reply #13 on: July 04, 2014, 06:33:57 AM »
Guess what, after. my idiocy duribg the build, I finally flew it for the first time today! Wow I am really impressed! Hell of. a machine! As stable as a 700 class but as agile as a 550 class!  A dream came true!

I am running following setup:

Xnova 4020 1000kv 2Y 8P
CC Edge 120 HV governed by MSH Brain
CC Bec Pro @ 6V
savox sc-1258tg cyclic
Savox sh-1290MG tail
MSH Brain
550 MS Composit Rapid
96 Railblades on the tail!

Wow I got that smile on my face that u only get after flying a sweet nee heli and it runs like a swiss watch!




Offline Rodney Kirstine

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Re: Thrust Bearings Tail Rotor
« Reply #14 on: July 04, 2014, 06:56:52 AM »
Congrats!
Rodney

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