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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vigor griding noise on start
03-19-2009 04:37 AM  8 years agoPost 1
NitroPolymer

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Southeast Florida

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Tonight I swapped out my SX-H engine for a new HZ, and upon reassembly there is an unholy grinding noise along with slippage when I try to start the helicopter. The clutch bell spins completely smoothly regardless of the position of the clutch shoe. When the engine is running, the start shaft and couple spin, but very freely. I can't detect any alignment issues. I have narrowed the problem to the start coupler or the one-way bearing. I had two clutches on the bench when I did the engine swap and I think there may be a small chance that I installed a clutch other than the one I took out. If that is the case, I can't be sure that the one-way is any good. I am thinking I should pull the motor and pop the other clutch on, but thought I would probe for other ideas first. So, anyone have a magic solution to this issue?

Thanks

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03-19-2009 04:44 AM  8 years agoPost 2
xxcysxx

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Baltimore, MD - USA

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i was following up on these threads. perhaps it might be similar to yours.

http://www.runryder.com/helicopter/t501328p1/

http://www.runryder.com/helicopter/t498561p1/

good luck on your findings.

Tam

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03-19-2009 05:03 AM  8 years agoPost 3
rocket_33

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Mount Pleasant,​Michigan USA

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Sounds like the one way bearing is toast. When the Vigor's first came out it was designed around a 60 engine. When people started putting the 90's in them, the bearing could not handle the extra power and failed. This problem goes back many years. The clutch bell should spin freely as yours does because it has an internal bearing to allow it to spin on the shaft as well as the pinion and clutch bell should be loctited to their respective bearings.

You said the start shaft spins when the engine is running. If the bearing were working properly the shaft should not be spinning....thus the reason for the one way. What many of us have done is to upgrade to to Vibe 90 clutch as it has a larger one way bearing. This would reguire a bearing change in the clutch bell (or the Vibe clutch bell), the Vibe clutch, starter shaft, hex adapter and either a new top bearing block or replacement of the upper bearing in the top bearing block

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03-19-2009 12:20 PM  8 years agoPost 4
Dr Lodge

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Guildford, Surrey -​UK

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Its almost certainly the one way bearing not up to the job of turning a 90 engine. Best bet us to upgrade the clutch stack with Vibe parts, but its quite expensive since you need clutch bell, clutch, shaft, bearings etc. I've done it on both my Vigor CS machines which have 90 engines and no longer have that problem.

Actually, I bought parts for both machines but still have one to swap round. If you want to know the parts required PM me, and I'll take a look at the parts I've got. I think you can get away with not replacing the clutch bell if you have a lathe to hand as it requires a different bearing.

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
TRex 500, Furion, Gaui EP200

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03-19-2009 02:57 PM  8 years agoPost 5
NitroPolymer

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Southeast Florida

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I actually forgot to mention that this heli has the Vibe 90 clutch, bell, shaft, and coupler. Still suspect the one-way

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03-19-2009 03:58 PM  8 years agoPost 6
rocket_33

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Mount Pleasant,​Michigan USA

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LOL that was something important to mention don't you think? It still is probably the one way bearing or make sure you did not swap the clutch shaft with the wrong one. Also check your clutch because didn't you say you thought you had one that was bad and may have swapped it out by accident?

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03-19-2009 10:28 PM  8 years agoPost 7
NitroPolymer

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Southeast Florida

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LOL that was something important to mention don't you think?
Yes, I screwed up one that one. The truth is that this is a helicopter that I used to own, and then sold to a friend about a year ago. He got out of the hobby and gave it back, and I don't remember which mods we ended up doing to it.

I swapped the clutch out today and now the starting issue is resolved. I am having a slight clearance issue between the bottom of the fan and the shroud, but it isn't so bad that I wouldn't fly it.

Thanks for your help,

Josh

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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vigor griding noise on start
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