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HomeAircraftHelicopterThunder TigerRAPTOR 50 › Clutch sticking question
03-05-2008 02:21 AM  10 years agoPost 1
flyride

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Salt Lake City UT

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I was at the field yesterday and just replaced my fuel lines and decided to flush the carb and after I did that I pulled the plug to flush it out by turning the engine with my starter. When I did that my engine made a pop/snap sound and then the clutch was stuck to the clutch bell(if you tried to spin it with the starter it would try to spin the blades so I thought I had a broken clutch but when I pulled it apart all was well and smooth now.Could it have been the oneway in the start shaft that seized momentarily or what would cause the clutch to engage or stick in the bell. It is smooth now and there is no sign of damage to the clutch, bell,oneway or other bearings I just want to know if there is anything else to look at before I put it back together.

and the blonde said "RECTUM, Hell damn near killed em!!"

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03-05-2008 05:19 AM  10 years agoPost 2
jschenck

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La Vista, NE.

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sounds like the fan may have spun up on the crank locking the top of the clutch to the bell. perhaps just a bit too much fuel in the engine caused a fuel lock popping the fan.

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03-05-2008 05:39 AM  10 years agoPost 3
David Blain

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Mt. Dora, Florida (USA)

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Copy that , sounds like you've spun the fan off, pull the engine out and recheck the fan to engine connection. You may be suprised with what you find, cause something is locking the clutch up. let us know

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03-05-2008 05:56 AM  10 years agoPost 4
flyride

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Salt Lake City UT

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I have the engine out still ,I didnt put it in from inspecting it earlier and I also took the clutch bell out but they seem to fit up just fine now and my fan seems to be just as tight as it was the day I installed it.I am waiting for the new gear set upgrade(11/96)from heliproz and it will be here tomorrow so I can put it back together.Everything still seems to be fine with it I just wanted to see if there was anything I may have overlooked or not thought to check before I put it back together. Is it possible for the fan to move down the shaft and still stay tight? It should be loose from my experience with it in the past.

and the blonde said "RECTUM, Hell damn near killed em!!"

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03-05-2008 09:41 AM  10 years agoPost 5
jschenck

rrProfessor

La Vista, NE.

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are there any scrape marks on the inside top of the bell?

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03-05-2008 10:56 AM  10 years agoPost 6
Chook

rrApprentice

Esperance Western Australia

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I'm with the others. The fan has wound up the threads a bit but is still held tight by the nut. Usually only does this when the weather is spot on for flying.

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03-05-2008 04:34 PM  10 years agoPost 7
flyride

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Salt Lake City UT

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Will double check by removing the clutch and retightening the fan.Every other time it has done it to me on another heli it was obvious just by looking at it.

and the blonde said "RECTUM, Hell damn near killed em!!"

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03-06-2008 04:52 AM  10 years agoPost 8
flyride

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Salt Lake City UT

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Problem found,you all were right the fan had loosened a little about 1/32 of an inch but was still tight on the engine but I pulled the clutch off and was able to twist it down and I did notice a few slight scrapes on the top of the clutch bell.I got the new gear set installed and fixed the clutch so hopefully I will be able to fly soon, I want to see how the 96/11 gear performs, I have heard it helps to stop the engine from bogging.

and the blonde said "RECTUM, Hell damn near killed em!!"

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03-06-2008 07:07 AM  10 years agoPost 9
jschenck

rrProfessor

La Vista, NE.

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I like the 96/11 gears. It doesn't prevent a bog but the headspeed recovers faster from a bog. I still fly at just over 2000 headspeed, putting the engine above 17k so it falls down to 17k where the Hyper makes it's power. But some prefer the 85/10 gears because they'd rather have the extra headspeed.

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03-07-2008 01:16 AM  10 years agoPost 10
flyride

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Salt Lake City UT

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Tried the new gears today and it made a huge difference in the way my heli preforms and way less bog,I like it.

and the blonde said "RECTUM, Hell damn near killed em!!"

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