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HomeAircraftHelicopterAlignT-REX 600N › Replacing sprung clutch and Liner.
06-01-2009 10:42 PM  9 years agoPost 1
spames

rrApprentice

Wayland, Ma USA

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Replacing sprung clutch and Liner.

I have about 7-8 gallons on this clutch. Today when I went to start the helicopter up the clutch sprung? I replaced the clutch as I could see a small hair line crack at the hinge side of the clutch and the front side was opened up to .07mm's. Now for the Question would you replace the clutch liner? The new clutch liner is .08mm and the clutch bell is .12mm. The total thickness of the old clutch and bell together is 19mm's. Looks like I only lost @.01mm of clutch.
Helicopter.. Trex 600n
Motor....... OS 50H

Thanks

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06-01-2009 11:00 PM  9 years agoPost 2
2LTime

rrKey Veteran

Walworth,NY

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I had my clutch break, like yours with a crack, after about 20-30 flights from new. I threw a new clutch in and it has lasted at least 7-8 gallons. So a new liner isn't always needed. I would think one way to tell would be how the clutch has been engaging. Mine was completely fine, not too high or too low. Two flights before failure it was dragging considerably even at idle. Next flight it snapped, so it happened very quickly. A liner wearing would be more drawn out I presume.

Jeff

If you can't learn to do it well, learn to enjoy doing it badly.

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06-01-2009 11:41 PM  9 years agoPost 3
LONEWOLF2440

rrElite Veteran

MYRTLE BEACH S.C

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Mine broke in 2 but left the clutch bell alone about 4 gallons ago

MIKADO LOGO 600 TREX 550

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06-01-2009 11:41 PM  9 years agoPost 4
baddynergy

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sierra madre, ca- usa

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I am not sure how the new 600s are, but originall the clutch to liner gap was too large and clutches were breaking like mad. The solution was to get a rappy 90 liner and glue it in. If the gap is too large the shoes just eventually spring themslevs open until they break.

Ideally the gap you want is 2 wraps of electrical tape around the clutch and it should be a nice fit. If it moves around you have too much gap. If it doesnt move and if you force it in, it will grab at an idle.

**Unattended children will be givin a shot of espresso and a puppy**

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06-01-2009 11:53 PM  9 years agoPost 5
Anthony.L

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Seattle, WA

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baddynergy nailed it, this is what I did on the last clutch replacement and no issues since. Installed a blue TT Raptor 90 HD clutch liner, and the gap is perfect. With the stock liner I would have to move the stick half way to mid stick before it would spool the blades. Now it idles fine then immediately starts spooling the blades when throttle is given.

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06-02-2009 12:48 AM  9 years agoPost 6
spames

rrApprentice

Wayland, Ma USA

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Good info. I will do the Raptor liner and Let you know how it works out.
Thanks Guys

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06-02-2009 01:59 AM  9 years agoPost 7
baddynergy

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sierra madre, ca- usa

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The GOOD thing about doing the rappy liner is... Mine has been in for 2yrs with well over 300 flights and still going strong..Same clutch same liner..

**Unattended children will be givin a shot of espresso and a puppy**

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