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HeliHobby . Ron’s HeliProz South . Century Helicopter

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Align T-REX 600N 700N > One-Way Bearing Issue Count
 
 
jaxrotor
Veteran
Location: Jacksonville FL

Does the 600N have a Sprague bearing?
08-02-2007 09:19 PM
HOMEPAGE  
 
 
JuanRodriguez
Elite Veteran
Location: Rochester, New York

Quote 
Does the 600N have a Sprague bearing?

To my knowledge, all auto rotation "bearings" are sprague clutches... people call them different things but in reality, they are not bearings at all... they are one way "clutches"......they do no more than engage or disengage....

Some call them "Torrington bearings"..... Torrington is one of the companies that makes sprague clutches....

Hope that helps....
08-02-2007 09:23 PM
 
 
JuanRodriguez
Elite Veteran
Location: Rochester, New York

Quote 
You might be on to something there. If the sleeve was a little on the small diameter side seems it might let the needles run up too far and distort the cage

That's exactly the point I'm trying to make........we know there is plenty of documentation to support the fact there is a problem.....

There has to be an answer.....
08-02-2007 09:25 PM
 
 
jaxrotor
Veteran
Location: Jacksonville FL

soooo...whats the measurement on your sleeve on your 600N?
08-02-2007 09:27 PM
HOMEPAGE  
 
 
JuanRodriguez
Elite Veteran
Location: Rochester, New York

Quote 
soooo...whats the measurement on your sleeve on your 600N?

Sorry, I don't have one so I can't provide you with a measurement.... That doesn't mean that I can't use my brain to makes suggestions that might just help others in solving their problems....I surely hope you don't have any issues with that ?? .

Why don't you kick it off by providing the measurement on yours ???
08-02-2007 09:29 PM
 
 
electriciancarl
Veteran
Location: Mesa, Az.

My three older sleeves are the soft ones that got kinda notchy. They are all exactly 12.13 mm or 0.4775" consistantly. I am now using the new hard sleeves with no problem so I don't think it's the sleeves.

My surprise at how many people are for sale is only rivaled by my shock at how little they cost
08-02-2007 09:37 PM
 
 
JuanRodriguez
Elite Veteran
Location: Rochester, New York

Quote 
My three older sleeves are the soft ones that got kinda notchy. They are all exactly 12.13 mm or 0.4775" consistantly. I am now using the new hard sleeves with no problem so I don't think it's the sleeves.

Now we're getting somewhere.... if your sleeves got "notchy" as you say, that would explain why the sprague clutches were locking up.....
08-02-2007 09:44 PM
 
 
electriciancarl
Veteran
Location: Mesa, Az.

I never said it locked up. It did not even on 8s. Thats 4.5hp. They were softer and would wear or be damaged easily but did not lock up. That was never reported until the nitro as far as I know. That is my point. What is unique to the nitro that would cause this.

My surprise at how many people are for sale is only rivaled by my shock at how little they cost
08-02-2007 09:53 PM
 
 
BOOGIE
Veteran
Location: LAFAYETTE LA

I have not had a problem with my one-way and its been threw a crash. I did add a bit of silicone lubricant when I built it.

Mikado/Aero-Model
08-02-2007 09:55 PM
HOMEPAGE  
 
 
LUCKYSTARZZZ
Senior Heliman
Location: tacoma wa

it seems i seen somewere that the electric sleeve with one way was working for people after the lockup
of the stock set
the new 600 pros at our shop have the new one way with even bearing spacing donyt know how long it will last though its the same beatring a switched to and got bout 32 flights before lock up

the ground always wins! ..my heli can beat up your heli
08-02-2007 10:26 PM
 
 
hoverking
Veteran
Location: Tennessee

electric one is a few thow smaller
08-02-2007 10:49 PM
 
 
electriciancarl
Veteran
Location: Mesa, Az.

Quote 
hoverking electric one is a few thow smaller
The part numbers on my E are 60021 bearing and 60018 shaft. Are the nitro part numbers different?

My surprise at how many people are for sale is only rivaled by my shock at how little they cost
08-02-2007 11:26 PM
 
 
Rockohaulic
Elite Veteran
Location: Valencia, CA, USA, 3rd Rock from the Sun

Apparently there is a new part number for the sleeve:

Quote 
There is a new sleeve #H60139 that replaces the 60018 sleeve

I think I'm going to order 2 of these for my 2 Nitros.

Do you guys think I need to replace the one-way at this point?

By the way, I think the next guy is # 24...

I got a helicopter for my girlfriend,
It was a good trade!
08-02-2007 11:38 PM
 
 
BOOGIE
Veteran
Location: LAFAYETTE LA

Quote 
Do you guys think I need to replace the one-way at this point?
You might as well I think they are only like $7 while you have it down

Mikado/Aero-Model
08-02-2007 11:44 PM
HOMEPAGE  
 
 
rcmike
Senior Heliman
Location: Dickson, TN

Do you think the sleeves could be too soft? When mine locks up you can't remove the main shaft so it is compressing the sleeve against the shaft. When the bearing is freed the shaft slides out easily.
08-03-2007 12:09 AM
 
 
Rockohaulic
Elite Veteran
Location: Valencia, CA, USA, 3rd Rock from the Sun

Yep - it was a pain to remove the head/main shaft!

I got a helicopter for my girlfriend,
It was a good trade!
08-03-2007 12:17 AM
 
 
JuanRodriguez
Elite Veteran
Location: Rochester, New York

electriciancarl ,

Quote 
I never said it locked up. It did not even on 8s. Thats 4.5hp. They were softer and would wear or be damaged easily but did not lock up. That was never reported until the nitro as far as I know. That is my point. What is unique to the nitro that would cause this.

Sorry about that... I "interpreted" your original post about the soft sleeves as causing your one-ways to lock up....

I don't know what is unique to one and not the other, that's why I suggested for folks to post some measurements....perhaps we will be able to see a correlation.....
08-03-2007 02:10 AM
 
 
hoverking
Veteran
Location: Tennessee

60139 did not work either tried that we have had less then one tank out 3 shafts and oneways
08-03-2007 03:13 AM
 
 
ATHAM
Veteran
Location: santa clara

#25

change it to the new one and already 2 gallons without locking anymore (keep my finger cross)

R90 SE YS91
trex600n YS50
trex450 v2 medusa
trex600 xl
08-03-2007 04:27 AM
 
 
abgraham
Heliman
Location: Deep South Texas

Quote 
Apparently there is a new part number for the sleeve:

Quote
--------------------------------------------------------------------------------

There is a new sleeve #H60139 that replaces the 60018 sleeve
--------------------------------------------------------------------------------



Don't bother.... I already tried that and they measure exactly the same (11.97mm if I remember correctly) and have that same sloppy feeling on the bearing. I do think the problem is the tolerances between the sleeve and bearing though. When I rotate the main gear by hand and then reverse it to lock it, it rotates quite a bit before locking. I think the rollers are coming too far out of the bearing. Also, I've compared it to the gear on a 600E and the electric gear was much tighter.
08-03-2007 05:03 AM
 
 
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Align T-REX 600N 700N > One-Way Bearing Issue Count
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