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Other › Stripped Teeth
11-21-2006 01:13 AM  11 years agoPost 1
702nitro

rrKey Veteran

Las Vegas, NV

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After my crash rebuild I took the trex out the front of the driveway an began to hover and it was smooth as when I first got it up and running. So I sat it down, then began to spool up again and thats when it started pirouetteing uncontrollably. So I retightened everything (belt) and even went far as adding a little bit of CA glue to the boom so it wouldn't slide in, but upon retest it immediately happened again(pirouetteing). I thought it was a gyro gain or vibration issue that was causing the problem, but upon investigation I found that the belt had become loose and that the front tail pulley teeths had become stripped.

What happened here?

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11-21-2006 01:30 AM  11 years agoPost 2
stickjammer

rrApprentice

Fort Plain ny

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you shouls upgrade to the medal pully and get rid of the plastic one

rob

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11-21-2006 01:34 AM  11 years agoPost 3
702nitro

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Las Vegas, NV

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I've already gotten the metal pulley upgrade and i'll install it tonight. So will this upgrade fix the problem from reoccuring?

Sorry if this issue has been beaten to death. I'm new to the Trex!

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11-21-2006 02:35 AM  11 years agoPost 4
TomRex

rrElite Veteran

West Palm Beach Join Date: 12-28-2005

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It should but don't forget the silicone spray!

Ignorance is the absence of facts.Stupid is lacking the intellectual capacity to comprehend the fact

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11-21-2006 02:48 AM  11 years agoPost 5
caseyjholmes

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Portland, Oregon

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How tight is the belt? Too tight causes accessive wear extra quickly.
Here's how loose I run mine now days..
A crash will also "strip" teeth off the belt or plastic pulley no problem.


As Tom pointed out, Lubing up the belt helps a great deal to reduce friction!

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11-21-2006 02:59 AM  11 years agoPost 6
702nitro

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Las Vegas, NV

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I think the problem I'm having is not knowing how much to apply "Slight" pressure according to the manual. The belt does feel tight, but i'm able to use a screw driver like you did, and move the belt as illustrated in manual.

Ohh! I also haven't been lubricating the belt, but will do from now on!

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11-21-2006 03:08 AM  11 years agoPost 7
caseyjholmes

rrElite Veteran

Portland, Oregon

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"slight preassure" translates in my book to
"1.5mm away from touching without applying preassure"
Not applying preassure just means to push the belt over, but don't apply any force to the screwdriver when you do so. You will feel a spot that the screwdriver will stop, before you have to actually apply some preassure to make the belt move. At this point, the belts should be about 1.5mm - 2mm away from touching.

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11-21-2006 03:14 AM  11 years agoPost 8
702nitro

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Las Vegas, NV

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Ahhh ha! I see said the blind man

Thank you!

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11-21-2006 10:27 AM  11 years agoPost 9
DaveInPA

rrNovice

Oxford, PA

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anyone have the link to the metal pully?

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11-21-2006 08:40 PM  11 years agoPost 10
702nitro

rrKey Veteran

Las Vegas, NV

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UPDATE!

So last night I got the metal pulley upgrade and everything checked out. Belt tension this time around was set per Caseyholmes instructions. Well this morning I brought the heli into hover and appeared and felt very stable, but one thing I noticed during my
hover to full throttle climbouts, straight down fast descent, or occasionally when I punched the throttle during FF flight, I noticed that the tail pushes 90 Degress to the left.

This got me a little scared. Is the belt just a little to loose????

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11-21-2006 08:55 PM  11 years agoPost 11
caseyjholmes

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Portland, Oregon

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Tail left and nose right? That would be the opposite of the tail letting go. Sound like too much hold. Did you hear a "striiiiiiiip" when it happened? If so, belt may be a TINY hair too loose.

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11-21-2006 09:24 PM  11 years agoPost 12
702nitro

rrKey Veteran

Las Vegas, NV

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Yes it was a tail left nose right movement. No I don't think I heard a stripping noise but its possible.

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