Kanedog discovers a Clutching CATastrophy, again. Pics!

Caper11

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Keep up the good fight Kanedog! :cheer2:

I agree. Unfortunately The clutches are a issue, and Kane is not wrong with his concern.
I hope hes on arctic chat and other forums that gets his concern noticed.
With cats rep these days, do they even care?
 

niner

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......
 

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jpmez69

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jpmez69

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That lower center shock mount looks like a chicken **** design with that bracket being rivited to the rail. Maybe just a poor grade of bolt. But over time, I can see other cracks and failures developing. With a better bolt will it rip the mount from the rail next time? The cracked tunnel by the chaincase is a concern as that area should be one of the most ridged on the machine. Possibly flexing from top to bottom and that's the pivot point as the crack is moving up. Driveline vibrations and harmonics maybe? If I owned one these I wouldn't be keeping it for very long. To pay that kind of money for a sled and having these things occur would be disheartening as these are not just bolt on fixes. These wide ranging type of issues don't instill a lot of confidents in Cat along with lackluster dealer support in some areas. I hope for the sake of cat owners with said models that Cat has a plan being cobbled together as we speak...
 

Caper11

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If it was harmonics, or resonance and it was bad enough to break a bolt etc, the rider would definitely be numb in the hands and feet.
 

pfi572

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If it was harmonics, or resonance and it was bad enough to break a bolt etc, the rider would definitely be numb in the head,hands and feet.
Fixed it for you

Reason AC riders are what they are ?? Lol
Just kidding . Nice machines
 

kanedog

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Kanedog 2015-2019, thanks for the good times S&M!
If it was harmonics, or resonance and it was bad enough to break a bolt etc, the rider would definitely be numb in the hands and feet.
Naw Cape. She’d be hard to feel. Low amplitude, high frequency. 8000revs per minute divided by 60 seconds=133 times a second. Very teeny weeny cycles.

Low amplitude, high frequency-Breaking glass type thing, hard to feel, hard to hear.
High amplitude, high frequency-Similar to running on one cylinder, easy to feel, easy to hear.
 
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Caper11

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Naw Cape. She’d be hard to feel. Low amplitude, high frequency. 8000revs per minute divided by 60 seconds=133 times a second.


Yes, The original question that was asked is it the riders fault or cats fault.

Lets look at the force it takes to break a bolt or structure by excessive vibration.

It takes a high amplitude vibration to cause damage to structure. A critical speed or resonance frequency on a machine can be present and not felt, but would take alot longer in time to do damage to a component. The amplitude would also be lower at the higher frequency (CPM) or RPM.

Less damping occurs at the resonant frequency than at other frequencies. Higher levels of vibration may be observed at the machines resonant frequency.

Stiffness,mass and dampening combine to determine a machines resonant frequency. Changing anyone of those three modifies the machines resonant frequency.


Doo chose to lower it with the runout in the primary.
 

Bnorth

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The bolts shearing are the rear scissor mount and is due to an undersized bolt. Some guys are upgrading them to off the shelf ARP fasteners.
 

E-Zmoke

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Don’t forget about the recall to increase the torque spec on the driveshaft non locking nut/collar type thing. Those were blowing off the driveshaft into the clutches as well. Ting ting ting
 
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E-Zmoke

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Don’t forget about the recall to increase the torque spec on the driveshaft locking nut collars. Those were blowing off the driveshaft into the clutches as well. Ting ting ting

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kanedog

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Kanedog 2015-2019, thanks for the good times S&M!
We need more crack pics so post’em up if ya got some.
The more pics, the more chances of
1. Preventing sledder injury
2. Buyback recall plus mods
3. Making snowmobile history
4. Getting Kanedog a job at Arctic Cat, head of sled power transmission systems, dictatorship w/absolute power.
 
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