TREX600 Bearing

[Randallhurd]

Has anyone ever had the problem of the one way bearing on the TREX600 locking.
I was flying yesterday and the T600 made a faint weird sound. I looked at it this morning and the one way bearing was locked up.
I popped it apart and it un-stuck itself. I put a little oil on it and put it back together and everything was just fine.
What would cause something like that to happen, It's a brand new bearing,

[wren1702]

It's the most hit and miss thing I've ever seen! Some people never have a problem....some have big problems with it. We have one that locks all the time, one that never locks.

On the one that locks, I've replaced the bearing, replaced the entire assembly with the new one, oiled with Tri-flow, grease, transmission fluid and a number of other tricks....to no avail ..............still locks!

[CNCjunkie]

From Align's website:

New Main Gear Case Set HN6064


●New design of one-way bearing for preventing locking.
●Use for T-REX 600/600 Nitro.

[SFACV]

I have had one lock up solid. Noticed it on spool down after a flight. I run helical gears and it is obvious that the side load had worn the rollers into the sleeve and caused the lock up. I replaced it with no problems since. I am sure it is comming soon again on that heli. My other 600 was starting to wear when I took it apart for some other reason (can't remember what) and I am sure it wasn't too far from a lock up. Replaced it and have had no problems. I am sure the helical gears cause this to wear quicker but I like the way the helicals work - lower gearing - quieter - smoother running. I don't feel a lock up will cause a crash unless it happend while trying to auto, which I don't make a habit of (Mainly AP) so I just live with the fact that they have to be maintained and replaced. As far as a random lockup that you are talking about, never heard about it before. I will definitely keep it in mind. Thanks for the heads up.
BTW I haven't used all of my old version one ways yet so I don't know if the upgraded ones last better.

Good Luck

[wren1702]

Originally Posted by CNCjunkie

From Align's website:

New Main Gear Case Set HN6064


●New design of one-way bearing for preventing locking.
●Use for T-REX 600/600 Nitro.

That's the one I used, it locked so hard that I had to take one side of the frame off, pull shaft, bearings and all out.....then use a hammer and punch to drive the main shaft out of the one way sleeve!

[CNCjunkie]

Originally Posted by wren1702

That's the one I used, it locked so hard that I had to take one side of the frame off, pull shaft, bearings and all out.....then use a hammer and punch to drive the main shaft out of the one way sleeve!

Maybe this one made by KASAMA then..... http://www.grandrc.com/inc/sdetail/96124

I'm glad I didn't purchase the new Align part yet.

wren1702, What did you use to lube the one way bearing on the new Align design?

[Randallhurd]

After you posted this, I googled it look at the price.
Most of the distributors, are selling it asTo stop One Way bearing Lock Up) Buy this case..
It looks like I'm not the first, I wonder why they still sell one that locks up like that.
Is there any suggestion on keeping the gears after I replace that?
Or is it pretty straight forward deal.

Originally Posted by CNCjunkie

From Align's website:

New Main Gear Case Set HN6064


●New design of one-way bearing for preventing locking.
●Use for T-REX 600/600 Nitro.

[jeffp]

I dont believe the helical gears would cause any more side loading of the oneway than straight cut gears, too tight a gear mesh is more likely though Align bearings are not very good quality, i have had no problems with the original oneway in around 60 flights but had to replace bearings in the blade grips as they were notchy out of the box.

[CNCjunkie]

Originally Posted by Randallhurd

After you posted this, I googled it look at the price.
Most of the distributors, are selling it asTo stop One Way bearing Lock Up) Buy this case..
It looks like I'm not the first, I wonder why they still sell one that locks up like that.
Is there any suggestion on keeping the gears after I replace that?
Or is it pretty straight forward deal.

Not sure, as I have not ordered one and is why I'm now looking at the KASAMA part.

[wren1702]

Originally Posted by CNCjunkie

Maybe this one made by KASAMA then..... http://www.grandrc.com/inc/sdetail/96124

I'm glad I didn't purchase the new Align part yet.

wren1702, What did you use to lube the one way bearing on the new Align design?

I used Tri-Flow.

[Mercuriell]

There's been a lot of correspondence on this in the past and there seems to be no magic answer - Ticidytoc's recipe is to Triflow (oil) the one way every 20 flights or so and he swears by this - I use a PTFE containing grease spray and have never had a lock up in 4 T600s and about 300 flights - there is also a custom made solution from LukeRC http://www.lukerc.com/home

[DA54]

I have noticed that when I let off the collective, I get a "reeeeeee" sound for a split second. Has started to happen more often as I get more flights (or maybe I am just noticeing it more), This what you guys are talking about? I thought maybe I was getting a spun bearing, but haven't located it yet. Happens just as you change the collective to a lower setting. Any ideas?

[mcomet]

I had this happening as well on my first few flights...the wheee sound that is... I haven't figured it out or noticed it again tho yet....

[Randallhurd]

That's the sound that I get on De-acceleration, when it locks up.
I check the bearing and it's locked,
I have one more flight before i expect it to happen again.
I'm going to try something a little differant on mine to see what happens.

I have to the next ten days to figure this out. I'm going to try some Dry Lube, tomorrow. It's a Dry Teflon chain coating lube. It's pretty expensive, I wouldn't suggest using it. but we'll see what happens tomorrow.

If it works,, I'll post the name of the chemical compound.
if not,, Ahgg we'll work on that if it happens..

[bullaculla]

get a tango and you wont need a oneway

[Randallhurd]

What is a Tango??

[bullaculla]

Kontronik Tango motor. Its spins so smooth and free, that if you spin the head backwards, the head will stop before the motor does

[Randallhurd]

Thanks,
I've been meaning to do a little upgrade.
I apprecite the Help.

I've sent Helidirect a message regarding the lock-up.
Larry has been pretty good in the past with warranty, ie , mediating between Align, who by the way, is very slow to respond on warranty work, They have one guy at align that covers warranty jobs. My guess is he only works one day a week between the hours of 8:00 am and 9:00 and has a one hour mandatory luch break,,

[SFACV]

My lockup wasn't do to lack of lubrication or heat. It was because I have the origional soft sleve and it was so chewed up that the rollers just jammed up. For lube I am using Associated Green Slime Grease. Associated Stealth diff lube will work great as well. Both for RC Car use. I have never found anything that works like this stuff. Add a little on assembly and forget about it. If I ever took the seals off of my bearings and cleaned them I would use the stealth diff lube to relube them and not have to use the Trinity Oil after. Don't let the size of the tube concern you. One small tube of this stuff should do for a dozen rebuilds if you use it on the one way as well as all of the sliders (main shaft & tail rotor).

[Randallhurd]

i didn't knwo that the Original was a pretty soft Metal.
I was going to try someting like that first.

Thanks