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Track shaft fail

Turboflash

VIP Member
Joined
Mar 18, 2019
Messages
1,987
Location
Southern MN
Country
USA
Snowmobile
'17 ZR9000 Ltd. PEFI Stg 3R
Here is one from this past weekend from a friend of mine. I'm glad this happened in parking lot. Minutes earlier he was out on the lake running over 100 MPH! Looks like it maybe it was cracked for a while before it broke. Took out the whole chain case (both sides). Ruined the caliper and rotor too.
2019 TCat with Hurricane 250 tune. 1-1/2" Rip2 with lots of long studs.
Wonder what causes this?
 

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sideshowBob

Lifetime Member
Joined
Nov 16, 2009
Messages
1,525
Location
North West Ontario
Yikes!
Lucky he has a guardian angle looking out for him....that could have gone very badly! The sled is just a sled and can be fixed.
 

Turboflash

VIP Member
Joined
Mar 18, 2019
Messages
1,987
Location
Southern MN
Country
USA
Snowmobile
'17 ZR9000 Ltd. PEFI Stg 3R
All stock drive train. 24/50 gear. Was trail riding the sled all day.
 

Clintww

VIP Member
Joined
Mar 6, 2022
Messages
35
Age
52
Location
Central MN
Country
USA
Snowmobile
2001 SXR. 2005 RX1. 2017 Sidewinder
LOCATION
MN
Happened once to an Apex in our group. Middle of the woods. Had to build a log raft to haul the sled out. We towed it with my RX1 and a Polaris tied together for about 10 miles. His had been cracked for a while too as you could the rust. He had his limiter strap pulled up a bunch and i think it left the drivers exposed to some direct hits
 

stgdz

Expert
Joined
Mar 27, 2021
Messages
432
Age
44
Location
Buffalo MN
Country
USA
Snowmobile
Polaris
First glad he is ok.


Second, was he running a drive shaft saver? Cuz it doesn't look like that worked

Third I remember the Ontario snowmobiler video
 

sideshowBob

Lifetime Member
Joined
Nov 16, 2009
Messages
1,525
Location
North West Ontario
Lol...yes I think most of us remember that video.
I think Cat had a driveshaft issue that was supposedly fixed in 2015. Maybe the gremlins remain...
 

hibshman25

Vendor
Joined
Sep 25, 2005
Messages
2,769
Age
39
Location
Lebanon, PA 17042
Country
USA
Snowmobile
2017 sidewinder ltx dx
2018 snoscoot
Wander if fitting a piece of pipe inside the driveshaft would be a good idea. While the pipe inside would not reduce torque load on the shaft it would prevent catastrophic failure. The pipe would keep everything somewhat functional by allow one cog to still have braking and one for drive.
 

earthling

Lifetime Member
Joined
Dec 1, 2017
Messages
1,125
Location
Ontario
Country
Canada
Snowmobile
2021 SRX
2006 ATTAK
The break seems pretty rare. And no one knows why it really broke. If it was due to cyclical fatigue caused by which is what I would hazard as a first guess, then fixing the cause is probably the answer. It would be nice to get that shaft in hand.
 


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