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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vibe 50 Clutch broke off
12-26-2008 10:15 PM  8 years agoPost 1
mickeyapples

rrVeteran

England

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So I am in a stall turn and I loose all power to the blades so I auto down and this is what I found.

The bearing on the starter shaft has come loose grinding down the bearing housing and the clutch bolts have snapped off in the housing.

Nice

Live life on the edge. Stand next to me when I am flying

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12-26-2008 11:13 PM  8 years agoPost 2
electrosphere

rrNovice

perth, australia

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how many flights you've done in the Vibe50?

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12-26-2008 11:15 PM  8 years agoPost 3
V-22 Osprey

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Sidney, Maine

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That clutch looks to have been loose for a while. You can see one of the holes in the shoe is elongated pretty good. I would think it also lead to the damaged starter shaft bearing and bearing block. Did you see and vibes during the last few tanks?

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12-26-2008 11:57 PM  8 years agoPost 4
Pinecone

rrKey Veteran

Maryalnd

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Yeap, one clutch bolt was loose for a while.

Terry
Blade CP Trex 450 SE
QJ EP8v2 EX Gaui Hurricane 550
Vibe 50 Bergen Intrepid Gasser

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12-27-2008 08:33 AM  8 years agoPost 5
Paul Woodcock

rrElite Veteran

Dubai - United Arab​Emirates

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hi guys
I am away on a trip, so can't check.
I seem to recall using longer bolts than the kit supplied because I was concerned. The hub had more threaded material to use. You may have stripped the thread during innitial assembly.
Will check when I get home.
Regards
Paul

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12-27-2008 10:18 AM  8 years agoPost 6
mickeyapples

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England

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I have had 100 ish flights and yes the bolts has come loose, I also used longer bolts and the clutch housing has been off a couple of times.

I will put it down to my vibe is so powerfull it just snapped my clutch off

Live life on the edge. Stand next to me when I am flying

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12-27-2008 04:14 PM  8 years agoPost 7
AaronJohnson

rrElite Veteran

mason,MI

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My thoughts,

A possible bearing failure caused a vibration and loosened/broke clutch bolts. by looking at it, if a clutch bolt came loose i would think that it would snap off the other bolt long before it trashed out a bearing like that. i wonder if the bearing failed first causing the clutch breakage? Did something loosen or shift causing engine to get out of allignment then the bearing to get "smoked"?

The only weird part is the "stretched" bolt hole in clutch and hub which shows loose bolt. im just thinking out loud.

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12-30-2008 02:15 PM  8 years agoPost 8
u77171

rrApprentice

NY - USA

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I was flying mine yesterday and after the first flight I went for another and the heli just sat on the ground when I tried to lift off. The engine revved but the blades stood still. I didn't pull it apart yet but I am expecting to find what happened to you. I know the one-way in the clutch was shot but that wouldn't explain what I was getting??

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12-30-2008 04:55 PM  8 years agoPost 9
mickeyapples

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England

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sounds like your engine may have been running backwards. try it again

Live life on the edge. Stand next to me when I am flying

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12-30-2008 07:19 PM  8 years agoPost 10
Votinh

rrNovice

Boston, MA

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The same thing happened to me yesterday with a TT53 - the main gear turn, but not the blades. Re-started the engine and it worked fine.

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12-31-2008 03:26 AM  8 years agoPost 11
u77171

rrApprentice

NY - USA

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I know for a fact that the one way in the clutch is shot so i'll have to pull it apart anyway. When I try to start it the bearing slips. If I go at it for a while it will catch and start but it's a pain. It looks like you have to buy the entire clutch and not just the bearing. I can't find a part number for just the bearing.

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12-31-2008 04:19 PM  8 years agoPost 12
Votinh

rrNovice

Boston, MA

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Try to clean and relube it. Also check the start shaft for wear or try a new one.

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12-31-2008 06:47 PM  8 years agoPost 13
JuanRodriguez

rrProfessor

The Villages,​Florida

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Longer bolts......

The Raptor line had a similar problem ....sort of......

The problem was that the bolts were actually a couple or three threads too long and would bottom out in the hub. When that happens, the clutch may LOOK like it's down tight but in reality, the "long" bolts would bottom out before having a chance to fully secure the clutch....

End result was the same.... the bolts (usually both) would shear right off.....

The solution (for the Raptors) was to grind off a couple of threads to allow the bolthead to fully engage the clutch....

I don't own nor have I ever seen the Vibe 50 hub so I don't know if the hub has "through" holes vs "blind" holes like the Raptor...(can't tell by looking at the pic above)

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03-21-2010 06:45 PM  7 years agoPost 14
Clearance

rrVeteran

Rain Forest of​Western Canada

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Similar situation here: both clutch cap screws sheared off leaving the ends inside the fan hub, though no as much damage. Low flight time on the Vibe 50. First time this has happened in decades in the hobby. Bewildering.

Drilled and tapped new 3 mm holes in the fan hub. Flew well yesterday.

Ken

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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vibe 50 Clutch broke off
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