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e-Align T-REX 250-450-500-600 > T-REX 450 V2 Thread coming from belt, Belt is damaged.
 
 
airsoft1779
Heliman
Location: Greenville,SC-USA

Yesterday I was about to take of and I noticed alittle piece of thread coming from the belt. So i take it inside and cut the piece of thread looking stuff off the belt and installed the belt back on heli. today I went out to fly it and as I was spooling up, It came off the gear on the tail so I go back inside, once again, and try and fix it, and noticed that there was more thread looking string on the belt.this time, there was alot about 6 inches long. Then I take it off and try to remove some it by hand as its to short to cut. No use. Then I contiue to look and try to find the problem. It looks like on the belt, something cut into it about halfway through the middle of it. Almost like a knife made a little cut in it. Not going through it but cutting enghough for me to notice it. My idler pulley was on. might be the problem? It doesn't look like the belt was going over wires or was hitting something at all. Everything is away from the belt. but that cut in it got there somehow when it was in the air. and the thread lookin stuff, well, All i can think of is it was built in the belt, and a piece came off and lifted it up making it 6 longer and tearing the belt up. If you just understood what I said, has anybody had this happen before???



airsoft1779



Trex 450 V2, Scorpion HK2221-6 on 11t, CC ph. 45, G770 3D w/ 9257, 65MGS.
09-06-2008 06:55 PM
 
 
tadawson
Elite Veteran
Location: Lewisville, TX

How many flights? They do wear out you know . . . that, or you might have gotten one of Align's "poster child for quality" parts, and it may just have had a defect . . . .

- Tim

The more I touch electrics, the more I grow to hate them . . . .
09-06-2008 07:02 PM
 
 
Waco
Heliman
Location: Elign, Ilinois USA

Normal for Align belt. Do your self a favor and go here http://www.heliproz.com/prodinfo.asp?number=881003 The treads on the align belt will become entangled in the pulley. You can lube and some say remove the snubber pulley to extend belt life. The Heliproz belt is lots better fix.
09-06-2008 07:47 PM
 
 
airsoft1779
Heliman
Location: Greenville,SC-USA

It only has 26 flights on it. I think I will order the Mavirick belt. Seems good and cheap.

Trex 450 V2, Scorpion HK2221-6 on 11t, CC ph. 45, G770 3D w/ 9257, 65MGS.
09-06-2008 08:18 PM
 
 
TomRex
Elite Veteran
Location: West Palm Beach Fl.

Get rid of the snubber pully and you will not have anymore probs.
The Maverikk belt is the shiz,,,

The AMA is way better than what you belong to!
09-07-2008 03:41 AM
HOMEPAGE  
 
 
Waco
Heliman
Location: Elign, Ilinois USA

Tomrex, if you don't like the maverick belt plz state why.
09-07-2008 06:38 AM
 
 
gary jp4
Senior Heliman
Location: Nashville, TN, USA

He likes it.
09-08-2008 03:05 PM
 
 
SSN Pru
Elite Veteran
Location: Massachusetts

Quote 
The Maverikk belt is the shiz,,,

Translation:

I like the Maverikk belt, it is better than Align's.


If you avoid failure, you also avoid success.
09-08-2008 03:34 PM
 
 
axemanclint
Veteran
Location: Cypress, Tx. USA

yeah i have the maverrik belt also and it works great, i have at least 60 flights on it so far and not one change to the belt or the tension.

"what goes up must come down," hopefully in one piece!
09-08-2008 07:30 PM
 
 
Waco
Heliman
Location: Elign, Ilinois USA

Sorry I didn't know what shiz meant is but it sounded bad.
09-08-2008 08:38 PM
 
 
SSN Pru
Elite Veteran
Location: Massachusetts

Gates belts are good too. I have no expeience with the MaverikksM
. You can buy the gates for about $6 @ www.sdp-si.com.

If you avoid failure, you also avoid success.
09-08-2008 08:51 PM
 
 
gary jp4
Senior Heliman
Location: Nashville, TN, USA

I think both the Mavrikk and Gates belts look better then the Align. I don't use either one though and have had no trouble with the Align belts for the last 2 1/2 years. I lube with spray silicone, have metal pulleys, and no idler pulley. I have run the belt tight and loose and it makes no difference in wear. It does add a little drag on the system if too tight. I have had hundreds of flights on two belts. I only changed it that then because I had a bad crash and didn't want to take any chances. No visible damage to the belt though.
09-08-2008 09:02 PM
 
 
Skarn
Senior Heliman
Location: Pasadena, MD

Bottom line: Remove the idler/snubber pulley and this will not happen again.

Skarn

It's better to burn out than to fade away...
09-08-2008 09:27 PM
 
 
airsoft1779
Heliman
Location: Greenville,SC-USA

Do you think it wore out so fast because of the pulley. I have the servo wires from the two front cyclic servos coming inside the frame and down to the receiver in the back, the wires come close to the belt, but still have good clearance. If by some chance the wires rub up against the belt in flight, which it hasn't, could it cause to were away?

Trex 450 V2, Scorpion HK2221-6 on 11t, CC ph. 45, G770 3D w/ 9257, 65MGS.
09-09-2008 01:36 AM
 
 
gary jp4
Senior Heliman
Location: Nashville, TN, USA

No, I don't think so. I think the wire would fail first.

Take off the idler pulley and lube the belt occasionally with some spray silicone and you won't have a problem until you crash.

Get the Mavrikk belt if you want to. It is better by all reports. But, the Align belt will work if you treat it right so you have something wrong.

Did you use silicone spray lube?
09-09-2008 02:06 AM
 
 
kingair
Key Veteran
Location: Utah - USA

Quote 
But, the Align belt will work if you treat it right so you have something wrong.

I agree, I get hundreds of flight on stock align belts and I've never had one fail. Sometimes they'll break in a crash but they are as good as any other belt. I tried one of the gates belts once which used to be the flavor of the month before mavrikk and I though it was crap compared to stock align belts. Shoot it with silicon once in a while like has been mentioned before.

There is a very fine line between "hobby" and "mental illness."
09-09-2008 02:36 AM
HOMEPAGE  
 
 
KarbonBird
Key Veteran
Location: Australia

I switched to one of these pulleys and all was good:

09-09-2008 03:01 AM
 
 
gary jp4
Senior Heliman
Location: Nashville, TN, USA

I used to use one of those but took it off and it has less drag now. Takes longer to spin down if you give it a flip by hand.
09-09-2008 03:40 AM
 
 
Skarn
Senior Heliman
Location: Pasadena, MD

Quote 
I used to use one of those but took it off and it has less drag now. Takes longer to spin down if you give it a flip by hand.

Exactly! There is no reason to keep one on...it is much smoother without one.

Also, while some may have no problems with the stock setup, when people do have belt issues like this, I've NEVER seen where removing the idler/snubber pulley hasn't solved the issue entirely.

The one caveat: You do still need to make sure the tail/boom is as straight as possible!

Skarn

It's better to burn out than to fade away...
09-09-2008 01:27 PM
 
 
SSN Pru
Elite Veteran
Location: Massachusetts

Quote 
I agree, I get hundreds of flight on stock align belts and I've never had one fail.

Align is not known for their good quality control. Some belts are good, some are bad. No amount of maintenance or lubing will stop a bad belt from breaking on you.

Quote 
Exactly! There is no reason to keep one on...it is much smoother without one.

The proper use of a snubber pulley is to increase the amount of "wrap" of a timing belt over it's corresponding pulley. This lowers the stresses that each tooth on the belt would experience. The snubber pulley on in this application only acts to foul up the tracking of the belt. More often than not, it causes the belt to ride to one side of the tail rotor drive pulley instead of directly in the middle.

Another possible cause for your problems is that the tail rotor drive pulley rotational axis and the front drive pulley rotational axis are not perfectly at 90º. This will cause the belt to ride to one side on both the front and rear pulley.

I would double check the alignment of your pulleys too.

the bottom line is there are a half dozen reasons why your belt frayed like that. None of us will be able to 100% diagnose the root cause of your problem without first examining your boid.

Quote 
I tried one of the gates belts once which used to be the flavor of the month before mavrikk and I though it was crap compared to stock align belts.

And why, may I ask, do you *think* Gates belts are crap?

If you avoid failure, you also avoid success.
09-09-2008 01:49 PM
 
 
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e-Align T-REX 250-450-500-600 > T-REX 450 V2 Thread coming from belt, Belt is damaged.
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