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HelicopterMiniature Aircraft Whiplash & Fury 55 › Fury clutch replacement
04-04-2005 01:32 AM  13 years agoPost 1
getfurious

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Exeter, NH

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Finally got a new engine in the fury, a c-spec ps. Wanting to start break in today, I started her up. As soon as the clutch starts to engage the blades the engine rpm jumps, and as soon as I advance the throttle the motor starts to rev but the blade rpm makes no change. I know it is not the governor because it is no where near where the RPM should be.

so to the point....
When you take the clutch assembly out can you just pull the upper bearing block assembly off from the start shaft? For some reason it doesnt want to budge and come off about a quater of an inch from the top.

Any ideas???
Thanks,
Paul

A skilled pilot without flight discipline is a walking time bomb.

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04-04-2005 07:38 AM  13 years agoPost 2
john spain

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london uk

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you could try sanding the starter shaft with fine grade paper.
small marks on the shaft would stop the bearing coming off.


john

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04-04-2005 07:52 AM  13 years agoPost 3
john spain

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london uk

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is the fan on tight?

was the clutch slipping with the old engine?
did you have a hot start?
does the clutch bell get very hot?


is the new engine starting backward?
are the set screws tight on the one way bearing?
does the main gear spin?

john

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04-05-2005 01:24 AM  13 years agoPost 4
getfurious

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Exeter, NH

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yes the fan is on tight, main gear spins, set crews are tight, hot start kinda had one wasnt full throttle or for more than 3 seconds but this happened during the period when i was trying to figure out why. Everything is tight and aligned, I am going to try and replace it to see if that does away with it. Plus... is time to get the new clutch .

A skilled pilot without flight discipline is a walking time bomb.

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04-05-2005 02:25 AM  13 years agoPost 5
Thomas L Erb

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Alliance ohio

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Just another thought. was the main gear spinning when this happened? if so the engine is running backwards. If your not sure start up again and try it. if that not it then the fan has to be loose. I can remember a lot of times mostly with new engines that i have had them kick back and run backwards. with the black main gear setup it was easy to see because the tail whould spin but with the sprag clutch this doesnt happen the tail wont spin Just another thought hope this helps Tom

P.S. if you have it apart dont forget to check the clutch to liner clearance and the condition of both

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04-05-2005 05:16 PM  13 years agoPost 6
getfurious

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Exeter, NH

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I never knew you could get these things to start backwards and run with a god throttle response. I know with model airplane engines you cant get them past idle before they die. I took it apart and the clutch liner had deep marks and was not glued. This helicopter was bought second hand and that was the only thing I really never checked....stupid me. The clutch needs to be replaced anyway, I will report back when I get it back together.

Thanks alot for the help and this will give me lots of ideas if this isnt the problem.

Paul

A skilled pilot without flight discipline is a walking time bomb.

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04-06-2005 04:16 AM  13 years agoPost 7
Thomas L Erb

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Alliance ohio

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Sounds great . You can get a better response to throttle in heli verses planes due to the engine having no drag on it. good luck and have fun Tom

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HelicopterMiniature Aircraft Whiplash & Fury 55 › Fury clutch replacement
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