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HelicopterThunder TigerOther › new clutch gone in only 1 lean run
10-04-2005 03:18 AM  12 years agoPost 1
RcFreek

rrApprentice

Mombasa,Kenya

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Hi. I replaced a clutch on my rap 50 SE since the previous one had flexed and was biting into the lining. I tried to squeeze it with a plier to its original shape but it came back as soon as the engine started. Now i put in a new one. It was running perfect, just when i got the engine a little lean during tuning and the rotor RPM increased alot. I did about 5 mins. When i landed and checked for damage i saw that the clutch was again biting into the lining when the rotors were rotated by hand. I opened it n saw that the clutch was distorted just a bit. What d i do? Should i squeeze it back to its original position or just put in a new one?

My LHS owns me!!!

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10-04-2005 04:31 AM  12 years agoPost 2
BarracudaHockey

rrMaster

Jacksonville FL

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Try replacing the liner at the same time as the clutch, sounds like you have too big a gap.

Take the new clutch and wrap it one time with electrical tape, butted end to end not over lapping. Glue the new liner in with jbweld or epoxy and push the clutch into the bell. When its dry pull the clutch and remove the tape, the gap should be correct.

Andy
AMA 77227
http://www.jaxrc.com

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10-07-2005 04:10 AM  12 years agoPost 3
RcFreek

rrApprentice

Mombasa,Kenya

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clutch reusable?

but can i use the clutch again by pinching it back close together or do i necessarily need to buy a new one. One more thing, i epoxied the liner in and it was a little too thick , such that the clutch wud be a tight fit. So i shaved the liningf a bit with a dremel to a point where it had a loose fit. Is that normal? can i reuse the same lining?

My LHS owns me!!!

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10-07-2005 04:24 AM  12 years agoPost 4
Wa11banger

rrElite Veteran

Huntsville, Al

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A dremel is not the most accurate tool for shaving a little out of your clutch liner Your clutch may be reusable I have had good luck with reshaping sprung clutches in the past.. You really need to cut out the old clutch liner and remove any excess glue and material as neatly and without damage if you can. Then you respring your clutch carefully ensure the slits are the same width all the way down thats where I start anyway. Get a roll of electrical tape and stick one end in the slot on the clutch wrapping it around the clutch untl the other end winds up in the same slot that way you dont have any overlapping tape and have a good solid single layer wrap around the clutch.

Size your new clutch material leaving a clean cut with no gap within your clutch bell. Mix up some JB weld, put a thin coat on the liner and the bell then match them together.. poke your start shaft into the bell like it belongs and place your clutch in the bell the layer of tape will help you achieve almost perfect gapping... It will be a little tight to start with but will wear in very nicely in short manner. Remember to test fit before you glue... If its a little loose thats a good thing means the glue will make up for any gapping.. if its tight well then your going to have to either work over the clutch (not recommended) or shave your liner( not recommended to use a dremel) Good luck its fairly easy and if done right the pair will live forever

Rick

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

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10-07-2005 01:59 PM  12 years agoPost 5
BarracudaHockey

rrMaster

Jacksonville FL

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Rebent sprung clutches, IME tend to last only a flight or 2.

Andy
AMA 77227
http://www.jaxrc.com

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10-08-2005 04:28 AM  12 years agoPost 6
RcFreek

rrApprentice

Mombasa,Kenya

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re-bent clutch

Will a rebent clutch work? how could the clutch hv sprung out in 1 flight , where the engine was lean for only 3 minutes? Is is so elastic? If yes, then why doesnt it work after re-bending it?

My LHS owns me!!!

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10-08-2005 04:36 AM  12 years agoPost 7
policerescue620

rrVeteran

las vegas, nevada

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I had a 50 magnum engine a long time ago out on the engine stand for breaking in with a prop.....lmfao.. i forgot to remove the clutch in my finest hour... you should have seen the feet come out!!!! no fixing that one... hehehe lesson learned.... p.s. the metal doesnt retain its strength after bending.. throw it away!! buy another!! better safe then sorry

adding a breath of fresh air daily...!!!

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