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HomeAircraftHelicopterAlignOther › 600N torque tube installing additional bearings help
03-08-2008 10:02 AM  10 years agoPost 1
PatrickW

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South Africa

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Has anyone installed additional bearings on the torque tube?How did you remove the pins at the end of the torque tube to slide additional bearings onto the torque tube?

Reason I'm asking is because I have a tail wag and I have tried everything else and I think installing additional bearings on the tube might help.

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03-08-2008 11:32 AM  10 years agoPost 2
MJHiscott92504

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James Hiscott , Germany for past 11 months

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Duce La Bearings
Take a Dremal with a small grinding wheel and grind one end of the pin flush with its surface, take a small punch and tap the pin out, remove the aluminum drive spline, install your second bearing. you can reinstall the pin you removed and place some thin CA to hold it in place, however I recommend installing a new roll pin to hold the spline back in place. I had the same tail wag that you are experiencing however a second bearing on the shaft did not help with my wag but I hope it works for you. what did permanently get rid of my tail wag is when I removed my TT set up and installed a belt driven assembly. I hope the double bearing works for you. fly safe my friend.

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03-08-2008 11:40 AM  10 years agoPost 3
PatrickW

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South Africa

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Thank you,thought as much with using a dremel.I think the additional bearing will help close to the tail.If it does not I will turf the TT and convert to belt.

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03-08-2008 12:51 PM  10 years agoPost 4
ehousetrex

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Wenonah, NJ

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Tail Wag / Torque Tub
I have used a small link remover that had just the right diameter and pushed out the pin. But when do you get the tail wag. Do you get it during high-speed forward flight or just in a hover.

RIP Roman - You don't know how much your missed -

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03-08-2008 01:18 PM  10 years agoPost 5
PatrickW

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South Africa

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Wag occurs in hover only.I've done the works to correct.My last resort for wag is the shaft alignment with additional bearings.

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03-08-2008 04:13 PM  10 years agoPost 6
rcmarty

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Penticton , B.C. CANADA

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I think it might be in the tail grips. It was for me on my 600e , after that i didn't even bother not modding the tails of my other helis (600n,500)

Get 2 more radial bearings for the tail grips , 2 15mm x 3mm bolts (button head are best but caps will work fine)

Put the radials in there first then followed by the thrust set.

You will need to fit the bolt to the hub. What you want to do is have the bolt bottom out on the hub just before the thrust bearings get notchy. Should take a first timer about an hour.

Some sanding of the threads on the end of the bolt (hub not tapped all the way down) will be needed.

Or go buy a QUK tail ($65 ish) as it is the same thing.

Martin

What goes up will come down.... one way or another !

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03-08-2008 04:39 PM  10 years agoPost 7
PatrickW

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South Africa

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Thanks Martin.I've tried my tail grips from my 600E (which sits dead in any flight mode) on the 600N and the wag was still the same.As I said , I've done the works I.e.dialing in the metal fan,tuning the engine perfect,checking the exhaust pipe for loose muffler and mounting,changing my head speed,checking for loose linkages on tail,mounted the gyro on a gyro mounting plate above the elevator servo directly behind the main shaft(which reduced my tail wag drastically),took out my frame stiffeners,played with the gyro gain etc..

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03-08-2008 09:52 PM  10 years agoPost 8
fdztec

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Windsor, UK

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I also had a mysterious tail wag that did not go away until I fitted a the Quick UK tail assembly...

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03-09-2008 01:44 AM  10 years agoPost 9
Simmer

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Massachusetts

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Patrick,
Have you checked your TT for a warp? This will cause a wag. You dont need the extra bearing, you only need a very straight tube and maybe you could use QuickUK or Kasama tail hub. Stock ones are well, some are not very good and will intermittantly work right. I myself got the kasama. I hated paying 67 bucks to resolve it, but I am now flying with no issues.

I know the TT is an issue. Mine was and I know even if it worked once, it can suddenly fail and warp on you the next time you fly. So if it was straight, do not assume it is still straight. If you find its warped just get a new one and insist (call the dealer where you order it from) and insist that they check it before they ship it. Best way to ensure you get a straight one. It comes with the bearing on it already. Now if you WANT to add a second bearing more power to you, but it wont neccesarily "fix" your wag. Personally I would suggest you take a close look at your TT before you try to cover up an issue with a second bearing.

Not that it wont work adding that second bearing, just that it might not be the root of your issue.

Good luck , I know what your going through and for me, the extra money on the tail hub was well worth it. You can literally FEEL the difference "tightness" of the new hub compared to the stock one. No slop at all.

Also just becuase the tail hub on the E600 works on the E does not mean it will work on the Nitro one.

Course there are other things that can couple up and cause your issue, but there is a common issue with these two parts.

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03-09-2008 01:51 AM  10 years agoPost 10
brcg123

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Wagoner OK USA

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go to walmart and buy a chain link puller for bicylcles 4.00 take a pair of plyers and break out the tabs making the trough bigger to put your tube in and twist the handle until it falls out. it also drives it back in.








Trex700N, Trex600N, Raptor70, RaptorTitan, GMPCrickett, Visa

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03-09-2008 03:31 AM  10 years agoPost 11
rcmarty

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Penticton , B.C. CANADA

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Common on the 600e's. Some grind the thrust washers down a bit for more clearance in the grip. I saw it as a patch at best. 2 radials deal with the side thrusts and the thrust bearing does it's job.

Also when you add an extra bearing it brings the thrust set out of the hole (in the grip) and therefore it doesn't bind up on the grips. Little to no side to side going on anyways which makes things better.

I think it's (wag and binding) headspeed related , the lower the hs the worse it will bind. When (if you had a choice) would you like the tail to not respond ? normal flight or when you messed up bad ?

I know when i mess up hs is one thing i don't have much of.

The QUK stuff is nice no doubt. I don't mind springing for bling but this mod is cheap and does the same thing. The stock align grips are beefy ehough for me. + i have no easy access to it anyways I don't even think there's 1 candian store that sell it

Martin

What goes up will come down.... one way or another !

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03-09-2008 05:19 AM  10 years agoPost 12
Simmer

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Massachusetts

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Yes it is speed related. What I meant by the 600e might work and not work on 600N is the head speed (I'm not sure but) is lower on the e then the N typically. So you might not see it on the e but doesnt mean its not the tail hub.
I personally didnt wish to mess with making a fix, prefer the store bought bolt on and fly solution. As a matter of fact this was one big reason I got into helis in the first place. Dont like to fix airplanes. too much time and trouble and never as good as new (usually) like to bolt and go

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03-09-2008 05:46 PM  10 years agoPost 13
PatrickW

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South Africa

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Hi Simmer,
Just came back from a long day at the field and wag is totally gone.Changed the shaft for a new one(checked it for warping by removing the bearing and rolling it on a glass table-it was fine),added 3 bearings to the new shaft,1 at each end and 1 at the centre.Will try and find a supplier of Kasama tail hub though as I do not like the amount of slop that I have in the tail.Tks for all your advice and happy flying.

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03-09-2008 07:08 PM  10 years agoPost 14
Coolpowered

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Youngstown, ohio

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PatrickW, do yourself a favor and keep a eye on those bearings you installed if there aligns, a buddy of mine had his bearing freeze up on the tt and it put him in the ground, and also you should put shrinkwrap and ca around those pins if you reused them so they dont spin out of the tt, I just pulled the pins and replaced the bearing with a boca bearing, then replaced both pins with 2.5mm nuts and bolts.

YRCHA CLUB MEMBER

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03-10-2008 04:27 PM  10 years agoPost 15
Simmer

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Massachusetts

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Cool Patrick, glad you resolved that wag issue. Your not alone in having this issue, it was a real drag for about 5 weeks for me until I got it completely gone. Its the intermittant issues that kill me. Mine flew fine the first two weeks then started to be an issue, however, I knew my shaft was warped when I installed it during the initial build, but I didnt realize it would cause the issue.

If or when you get the kasama tail hub, or UK tail hub you will be really impressed by how much it tightens up that area. Youll wonder how they could have ever sold a tail with so much slop in it. I guess its supposed to "find" home when centrifical force pulls it out. I think it was a cheap way out for them, and a bad move.
Align still has not gotten thier own upgrade fix for this. I know they have a new hub but its not metal and really is no different in design then the origional

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03-10-2008 05:19 PM  10 years agoPost 16
DS 8717

rrProfessor

Here wishing i was somewhere else

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If you install the bearing in the middle of the shaft,you will have a vibration issue.it has to be offset to one end a little bit. We have over 20 600's at our field and not one issue with vibration from the TT with single bearings. The TR hubs do bend easily,and it is easy to drag the tail blades because of insfficiant clearance with the 95mm blades,most guys are using the 85mm KB blades.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-10-2008 05:39 PM  10 years agoPost 17
creightoncarr

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Missouri City, Texas - USA

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You dont need the extra bearing, you only need a very straight tube an... I know the TT is an issue. Mine was and I know even if it worked once, it can suddenly fail and warp on you the next time you fly.
Of course, the extra bearing minimizes the possibility of this happening.

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03-10-2008 10:43 PM  10 years agoPost 18
Nashville

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Formerly Music City now back home in Sunny Florida

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Will someone please produce an good, STRAIGHT aftermarket torque tube???? I, and almost everyone I know have had the tail issue, some bad, some not so bad. I went through several brand new tt's before I got one that is fairly straight. Wag is just about gone.

I was Spektrum when Spektrum wasn't cool

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03-10-2008 10:56 PM  10 years agoPost 19
Simmer

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Massachusetts

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Makes you want to put a belt into it doesnt it

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