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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther › Stay away from Zenoah Grass Mower Clutch GAS Conversions!
05-03-2021 08:14 PM  9 days ago
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aliazhar

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Hampstead, MD

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Stay away from Zenoah Grass Mower Clutch GAS Conversions!
just what the title says !
stay away from a lawn mower clutch!
you pocket is on the line ! an arm and a leg, you choose hehe
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05-04-2021 08:08 AM  8 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
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Ok... A picture may help to understand your point!

/
Saludos cordiales,
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05-04-2021 01:33 PM  8 days ago
aliazhar

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Hampstead, MD

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Rojoalfa /
/

Ok... A picture may help to understand your point!

/
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05-04-2021 01:53 PM  8 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Good for RC cars!

Not good for RC helis!

Maybe good for 3D RC helis...

/
Saludos cordiales,
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05-04-2021 02:00 PM  8 days ago
aliazhar

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Hampstead, MD

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Rojoalfa /
/

Good for RC cars!

Not good for RC helis!

Maybe good for 3D RC helis...

/
Experts can fly anything.
That spring on the clutch is a disaster. It produces high frequency resonance which eventually destroys your helicopter.
99% of the flyers who crashed their helicopter with zenoah clutch, does'nt even know as to what caused the crash.
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05-04-2021 03:21 PM  8 days ago
squirrel

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USA

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Looks more like the corrosion on the parts and interface region are more likely to be the cause. Not sure how you get that spring to resonate.
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05-05-2021 03:29 AM  7 days ago
RM3

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Killeen, Texas - USA

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MA Whiplash used that style of clutch. Nearly all RC style engine helicopters used it just fine. The issue isn’t the clutch spring... it’s the axial alignment of the clutch and the clutch bell.showing a preference will only get you into trouble, 90% of everything is crap...
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05-05-2021 03:40 PM  7 days ago
aliazhar

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Hampstead, MD

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RM3 MA Whiplash used that style of clutch. Nearly all RC style engine helicopters used it just fine. The issue isn’t the clutch spring... it’s the axial alignment of the clutch and the clutch bell.
MA Whiplash dumped a copy of Helibug Core7 Lite conversion design without testing. I later discontinued that design due to durability/safety issues with Zenoah clutch combination. Aluminum version of Core7 was never discontinued as it was designed for more of a industrial use.

You have made a very valid point about the axial alignment of the clutch...That adds to the list of other problems by using Zenoah clutch.
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05-12-2021 04:25 AM  21 hours ago
philthewrench

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Greenwood Lake NY

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How does the spring cause vibration? What clutch does not use a spring?
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05-12-2021 10:11 PM  3 hours ago
aliazhar

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Hampstead, MD

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philthewrench How does the spring cause vibration? What clutch does not use a spring?
Vibration is different then Resonance.
There are no rc helicopter clutches which uses a spring except the ones using Zenoah lawn mower clutch.
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05-12-2021 10:43 PM  2 hours ago
rotorist

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Pittsburgh,Pa. USA

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What is a simple definition of resonance?
1a : the quality or state of being resonant. b(1) : a vibration of large amplitude in a mechanical or electrical system caused by a relatively small periodic stimulus of the same or nearly the same period as the natural vibration period of the system.
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