Jack_Shaft
TY 4 Stroke Junkie
Is there anybody out there getting a VKPro ready for the winter season?
Mine is relatively ready to go, but I worry about the non-serviceable wheels and brgs in the rear skid, especially those little tiny ones above the rear shock mount. I needle greased and saved them a couple of seasons ago and the machine hasn't gone real far since on two seasons of local grooming, but I just know they are getting close to end life. At $125 a pop it seems a little silly cost wise. Has anybody found a suitable alternative to these? I keep wondering if the 6303-brg anti-stab idlers at the front of the XU chassis Skandic and Expedition skidframes would work. maybe something for me to try the next time the skid is out.
Mine is relatively ready to go, but I worry about the non-serviceable wheels and brgs in the rear skid, especially those little tiny ones above the rear shock mount. I needle greased and saved them a couple of seasons ago and the machine hasn't gone real far since on two seasons of local grooming, but I just know they are getting close to end life. At $125 a pop it seems a little silly cost wise. Has anybody found a suitable alternative to these? I keep wondering if the 6303-brg anti-stab idlers at the front of the XU chassis Skandic and Expedition skidframes would work. maybe something for me to try the next time the skid is out.
hydraulic yam
Newbie
- Joined
- Nov 12, 2025
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- Location
- Mt Albert, Ont
- Country
- Canada
- Snowmobile
- 93 Yamaha VKII, assorted fluid drive Yamahas
I would hope they use a better bearing and wheel up there as that working sled
has the most tension on the top section of track and under load constantly.
The bottom is basically slack and just carrying the weight.
But is probably just a "normal" idler.
Ron
has the most tension on the top section of track and under load constantly.
The bottom is basically slack and just carrying the weight.
But is probably just a "normal" idler.
Ron
- Joined
- Jun 1, 2004
- Messages
- 7,894
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- sudbury on
- Country
- Canada
- Snowmobile
- 2016 apex xtx
2011 apex xtx
2009 phaser rtx/x
1997 et410t/r
1988 vk 540
Jack_Shaft
TY 4 Stroke Junkie
To my knowledge it remained the same old wheel and bearing for the entire run of the ProAction coil over shock rear suspension in the VK3 and the VKPro. I have already modified the rear suspension axle to take a Ski-doo 165mm rear wheel and replaceable 6004 bearing. The next time I get the skid out or one in my hands I'll have a look at the upper Yamaha wheel dia vs. the Ski-doo anti-stabs. I think it's close, and nothing a couple of bolt-through adapter bushings couldn't solve. #79 in the fiche below.
hydraulic yam
Newbie
- Joined
- Nov 12, 2025
- Messages
- 13
- Reaction score
- 5
- Points
- 3
- Location
- Mt Albert, Ont
- Country
- Canada
- Snowmobile
- 93 Yamaha VKII, assorted fluid drive Yamahas
good thing is that these cylindrical bearings have almost always
been metric , same as alternators ..
Deere used SAE sizes in older lawn tractor mowers such a 3/4 and 1 inch.
Anything newer used .984" x 2.047" which is 25mm x 52mm
6204 are 20mm x 47mm . and were probably used in old sleds before "metric"
Spherical bearings are stranger as they were 1" ID with 2.047 OD for flange or quill.
I have had customers turn worn shafts on combines down to 25mm from 1" inch
so they could salvage shafts and still use a standard metric bearing.(25x52)..
Just some facts still wandering in my head and spill out hoping someday
they will help someone else . Probably will still remember stuff like this
long after I've forgotten my name .
?????////Ron !
been metric , same as alternators ..
Deere used SAE sizes in older lawn tractor mowers such a 3/4 and 1 inch.
Anything newer used .984" x 2.047" which is 25mm x 52mm
6204 are 20mm x 47mm . and were probably used in old sleds before "metric"
Spherical bearings are stranger as they were 1" ID with 2.047 OD for flange or quill.
I have had customers turn worn shafts on combines down to 25mm from 1" inch
so they could salvage shafts and still use a standard metric bearing.(25x52)..
Just some facts still wandering in my head and spill out hoping someday
they will help someone else . Probably will still remember stuff like this
long after I've forgotten my name .
?????////Ron !
