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Cold weather clutch slippage ??R-50 v-2

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Cold weather clutch slippage ??R-50 v-2

Old 01-07-2011, 02:58 PM
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reelquick
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Default Cold weather clutch slippage ??R-50 v-2

Decided to give it a go after the snow and the winds calmed down,temp was 31 degrees.
3 hours on the Sim was enough.
My heli was out in the garage no heat.Fired right up,warmed it up a little.
Started to spool up slowly and RPMS went up and the rotor speed did not follow.Every 5-10 seconds I would hear a clunk and I could see the rotor-clutch try to engage.
I backed it down, and left her at a higher than normal idle(blades not turning) for about a minute.
Slowly I increased throttle and up she went, hovered for a full tank.
Had to stop due to not being able to feel my fingers.

When I had her apart after the last rebuild I checked the clutch and shoe clearance with a regular piece of paper folded once after a hot 5 second start.I hit the liner lightly with some fine sand paper.
Had 6 hoveres with no problems.
This is the first time with this glitch and hovering in weather this cold.
Thank`s.
Old 01-10-2011, 12:03 PM
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reelquick
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Default RE: Cold weather clutch slippage ??R-50 v-2

Guess it`s tome to replace the clutch ? Anyone?
Old 01-10-2011, 01:58 PM
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colrod12
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Default RE: Cold weather clutch slippage ??R-50 v-2

Possible That,

the centrifugal arms on the clutch, may have been slipping and slidding on the bells liner. I can see it happening depending on how long it was out in the cold.

Liner could have froozen solid!

Yes!! I would Replace it but thats me. Just as an FYI, for the love of pete reelquick, bring the heli in, its telling you it don't like the cold!!

[]
Old 01-11-2011, 08:02 AM
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reelquick
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Default RE: Cold weather clutch slippage ??R-50 v-2

Will do ! Thanks.
Old 01-11-2011, 08:08 AM
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sfaust
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Default RE: Cold weather clutch slippage ??R-50 v-2

I had the very same issue two weeks ago. I ended up taking out the entire drive train looking for the issue, and found none. I started to think the same about cold weather and clutch slippage. Since everything else was in working order secure, the clutch slippage seemed to be the only logical answer. I did have a larger than normal gap, and if the cold played an issue, that would explain it. I'll need to test more, but since I plan on replacing the clutch liner anyway to bring it into spec, I won't be able to tell absolutely if the problem was cold, or it needed a new liner, or the combination of both. I don't have the time to test it, otherwise I would.
Old 01-12-2011, 03:48 PM
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reelquick
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Default RE: Cold weather clutch slippage ??R-50 v-2

I`m looking at mine now .We got 7 inches and i`m grounded for now! Till it ices over, Thanks for the come back ...
Old 01-20-2011, 08:40 AM
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reelquick
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Default RE: Cold weather clutch slippage ??R-50 v-2

Caught a 40 degree day and took her out side,sat for about 10 minutes, warmed her up and off to hover! No slippage.
No more out side living for the Raptor. Sorry girl,
Thank You colrod.

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