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HomeAircraftHelicopterAlignOther › One-way Bearing?
02-10-2008 02:51 PM  10 years agoPost 1
JR4EVER

rrApprentice

Norway

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Hi I just got my T-rex600n Pro and I have heard about locking one-way bearings.Will this fix the problem,They have it in stock on a local hobbyshop. Threre is no boca bearing dealers here in Norway

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02-10-2008 03:16 PM  10 years agoPost 2
Wa11banger

rrElite Veteran

Huntsville, Al

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One thing you might want to try is to have the problem first then try fixing it. Not trying to be a smart ass but the one way bearing lockup isnt a rampant virus spreading to every 600N out there. Every model of heli manufactured to date has had a few here and there. Try what ya got first and see if it is like johnny X's and locks up. Remember a locked autohub is not the end of the world, they spend most of their time in a "locked" condition. A locked autohub will only affect your auto performance.

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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02-10-2008 04:40 PM  10 years agoPost 3
JR4EVER

rrApprentice

Norway

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Thanks! you have right about that,But if you building a new kit and put alot of money and effort into it, Why not spend like10$ to eliminate a problem

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02-10-2008 04:57 PM  10 years agoPost 4
inkspot1967

rrProfessor

Cranston Ri

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like Wa11banger said try the kit one first, if it locks up which it shouldnt

use the hn6064t and lube it with automotive white lithium grease thats how ive been doing it and never had a problem, dont use any kind of oil to lube the bearing.

the other shaft is the wrong one for a nitro

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02-10-2008 05:55 PM  10 years agoPost 5
Kevin Dalrymple

rrKey Veteran

Indianapolis

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I had mine lock up (4-5 times). I pulled the gear out and cleaned the bearing and relubed the bearing with Triflow oil and have not had a lock up since. I even bought a new bearing thinking the lock up will continue, but hasent.

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02-10-2008 06:29 PM  10 years agoPost 6
SamZam

rrApprentice

Sunshine

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I think its a good practice to replace what was know to be defective in the first run..I bought my pro new, built it according to the book. Break in engine in my table out of the frame. Place engine in my heli, did some settings, 1 2 3 4 5 tanks everything seems okay, 6 tanks pass bearing locked..Everything is tight not even notice the lock until someone while looking at the heli happens to turn the gear..The gears locked and when i mean locked its locked. What would happen if in an instant while flying i need to do auto?..Of course crash is immenent..When i got home i tried to remove the shaft from the main gear and i tell you what..Its on there..I have to remove the head, slip an allen tool at the bolt hole and bang it off there..Finally got it out further inspection found oneway bearing shaft has deep cuts like the bearing actually cut through it..Wow..not after 6 flights?..If I have known this the first time around i would have not bought my second 600N..But learning from it and reading around I have bought upgraded parts before i even put the second one together..

With my experience why not?..Install those upgrade now saves you headache later...IMO

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02-10-2008 06:48 PM  10 years agoPost 7
LennyDude

rrApprentice

Maine USA

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Thanks! you have right about that,But if you building a new kit and put alot of money and effort into it, Why not spend like10$ to eliminate a problem
We are flying 600n's around here and the bearing problem has only occured to one flyer.

You must know how easy it is to remove the gear package from your heli? One allen driver and about 20 seconds!

As others have said, it is not a 100% virus. All you ever read on here are negative comments and problems! How many 600N fliers out there taking the time to tell the entire world about all the parts on their helis that work fine?

Do what you want but please DON'T listen to all this stuff and take it ALL as gospel

Spinny UP, Gear DOWN, before U hit the GROUND
http://www.smrcha.net

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02-10-2008 07:04 PM  10 years agoPost 8
Kevin Dalrymple

rrKey Veteran

Indianapolis

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[quote]Everything is tight not even notice the lock until someone while looking at the heli happens to turn the gear..The gears locked and when i mean locked its locked. What would happen if in an instant while flying i need to do auto?..Of course crash is immenent.

Sorry to say but if you need to do an auto the clutch would disengage from the pinion and you can still auto. Now if the clutch would not release from the clutch bell OK the blades are going to stop with a locked up one way. What i am saying is it is ot that big of a deal. If the bearing was locked up and you did not no it what would make you check it. There would not be that much of a flight difference to know. An i right or wrong about this?

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02-10-2008 08:19 PM  10 years agoPost 9
JR4EVER

rrApprentice

Norway

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ok will try the stock one first, just add triflow and see what's happens and check it everytime i refuel.

I'am really looking forward too test her

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02-10-2008 08:39 PM  10 years agoPost 10
bah7566

rrVeteran

Colorado

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I have had mine for 19 flights so far with no problems. I am told to just make sure you don't tighten the bolt that holds the gear on too tight and distort the sleeve and you will be ok without lockups. Like I said, so far so good on mine.
I love this heli!!!

Bruce

I am a Heli addict!!!

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02-10-2008 09:34 PM  10 years agoPost 11
dva

rrNovice

Maricopa, AZ

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Two lock ups on the last 4 flights. I need to remove the locked up bearing but noticed that the locked up bearing was deformed inside. I do not think lube has anything to due with the lockup problem. I think it may be tightening the gear to tight. Last time I installed the bearing I wrenched down on the bolt and think this may have deformed the sleeve.

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02-10-2008 09:42 PM  10 years agoPost 12
casper7

rrApprentice

UK southeast

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with the latest kits you should not get lock ups as Align fixed the problem some months ago

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02-10-2008 09:47 PM  10 years agoPost 13
tchavei

rrProfessor

Portugal

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I got a kit from the first batch and mine hasn't locked up yet. In antecipation I bought 2 VXB bearings, 1 boca bearing, 1 original INA and 1 NSK one... They are all still in the bags... bummer

The secret is to lube it well and don't tighten up the lower jesus bolt too much or you will deform the one way sleeve.

Tony


--------------------
"Perfection and patience usually walk side by side..."

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02-10-2008 10:07 PM  10 years agoPost 14
Wa11banger

rrElite Veteran

Huntsville, Al

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The secret is to lube it well and don't tighten up the lower jesus bolt too much or you will deform the one way sleeve.
This is some very sound advice.. I also have one off the first boat here. I have not done anything to this heli other than blade grip bearings, blade grip upgrade to metal, dampners, and a swash upgrade.

The jesus bolt is probably the best advice. It does not need to be tight! It barely needs to be snug! It is not a tension bolt holding anything together, it is merely a pin. If so many people would quit bearing down on them and tightening them for all they are worth most vendors would have very few autohub failures. That bolt barely needs to be snug. It is a locking nut that should just barely touch the bottom of the captive hole and then just a tweak more.

Those that get overtightened warp the autobearing sleeve which in turn causes all the other issues as time wears on.

A locked autohub is not crash eminent, Back in the R90 authub problem era I had even done push over autos and rolling autos with iffy hubs,,, Thank god QUK came to the rescue there because the original MFG sure took their sweet time.

Anyway you can do a great auto with a locked autohub, just not a spetacular one.

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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02-10-2008 10:38 PM  10 years agoPost 15
SkateFreak

rrElite Veteran

Cambs UK

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"The gears locked and when i mean locked its locked. What would happen if in an instant while flying i need to do auto?..Of course crash is immenent.."

Hahahaaaaa,
Ohhh my, I hate to add to the jip your getting for that comment heh.
Yeah, locked as locked can be...
Like mine was from the second flight... didnt get round to changing it for a few months as i'm a skint student, at first I just thought it was a crap heli for autoing and didnt have the hang time my R50 did (which i still question interestingly).

Auto hub locks, just means if the engine quits you spinning the clutch shoe still, not that much difference really...

If it means iminant crash... maybe you shouldnt be autoing with or without a locked one way

-Jvr

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02-10-2008 10:58 PM  10 years agoPost 16
Droid

rrElite Veteran

Deep down in the Southwest- UK

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Auto hub locks, just means if the engine quits you spinning the clutch shoe still, not that much difference really...

If it means iminant crash... maybe you shouldnt be autoing with or without a locked clutch
If your engine quits that clutch aint bitin no way....

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02-11-2008 01:40 AM  10 years agoPost 17
SamZam

rrApprentice

Sunshine

My Posts: All  Forum  Topic

Sorry to say but if you need to do an auto the clutch would disengage from the pinion and you can still auto. Now if the clutch would not release from the clutch bell OK the blades are going to stop with a locked up one way. What i am saying is it is ot that big of a deal. If the bearing was locked up and you did not no it what would make you check it. There would not be that much of a flight difference to know. An i right or wrong about this?
Ya your right..But when the engine still running dont you think the clutch still engage?..And when engage with it lock wouldnt you think the blade slows down fast?..I dont know am not an expert..
Or maybe i did over re-act on my experience that i took the precautionary part of buying the upgrades and install them in leu of using the stock parts that most guys says defective or weak...I dont think theres anything wrong with taking the preventive measures before they happens..
Hahahaaaaa,
Ohhh my, I hate to add to the jip your getting for that comment heh.
Yeah, locked as locked can be...
Like mine was from the second flight... didnt get round to changing it for a few months as i'm a skint student, at first I just thought it was a crap heli for autoing and didnt have the hang time my R50 did (which i still question interestingly).

Auto hub locks, just means if the engine quits you spinning the clutch shoe still, not that much difference really...

If it means iminant crash... maybe you shouldnt be autoing with or without a locked clutch
Dont worry "Mate" wont do any auto's Just for you...

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02-11-2008 02:13 AM  10 years agoPost 18
SkateFreak

rrElite Veteran

Cambs UK

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I'm sorry,
posters regret,
I think that may have come across a little harsh...
I was just playing on the theory that losing a couple of seconds of hang time is disasterous, nothing personal.
Was in a funny mood, woke up this afternoon after workin a 12 hour shift in a polish concentration camp organisation last nite (uni student and works very scarce here) and damn, it was horrific, no wonder no one said anything about the work before I got there...
their never seeing me again, I'm desperate to fly but not that desperate yet heh.

Back to the topic,
seized one way, not cool but not the end of the world, I forgot about it for a while even with autos...
but better safe than sorry because sods law says if you dont change that bearing your next emergancy auto is going to come out 3 ft short and in many peices heh.

Best regards

-Jvr

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02-11-2008 03:37 AM  10 years agoPost 19
Kevin Dalrymple

rrKey Veteran

Indianapolis

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All i am saying is the clutch is not locked or working when at idle and if the motor stops is is not working either. Then the clutch bell is free to spin. If the motor is driving the clutch then you are not autoing you are under power. I am not trying to come off harsh, (And I am sorry if i did) i am just trying to clarify how the system works. It is a centrifical clutch and it takes RPM from the motor to get it drive the clutcg bell. Low RPM like at idle or NO RPM form the motor no drive.

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