2016 m8000 3” worth getting 21/49 gearing setup?

COLBEE

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Had a 14 HCR that I tried that on, ran the 3” with 8T drivers and 19/50 gearing, in heavy snow it was terrible for clearance and packed in too much and made a horrible rubbing sound pretty much steady. Changed to 7t with the 21/49 hyvo kit and manual tensioner and was way more better, also was running 70 gram weights with a stage 2 speedwerx kit and with all that set up it had lots of track speed and still lots on the bottom


Thanks for for the info, I think the 21/49 gearing with 70g weights is the way I’m going to go for now, I might also do the manual tensioner.
 

Jorgy

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Thanks for for the info, I think the 21/49 gearing with 70g weights is the way I’m going to go for now, I might also do the manual tensioner.

I'm doing the same setup. Mainly cause I'm feeling lazy and don't want to pull the skid on on this sled.

To someone's point above though, I ran a 3" track on my 15 pro with 7 tooth drivers and the clearance to the bulkhead was 3/16". Only in heavy wet snow would I hear ice/snow grind through the bulkhead, never any issue and no damage in 2000 miles. Clearance is not an issue as long as you run proper track tension
 

tmo1620

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I'm doing the same setup. Mainly cause I'm feeling lazy and don't want to pull the skid on on this sled.

To someone's point above though, I ran a 3" track on my 15 pro with 7 tooth drivers and the clearance to the bulkhead was 3/16". Only in heavy wet snow would I hear ice/snow grind through the bulkhead, never any issue and no damage in 2000 miles. Clearance is not an issue as long as you run proper track tension

May not cause damage but is annoying as hell and where there is restriction there is a slight loss of power, especially when you have to run your track tension a touch on the tighter side because of the lack of clearance. I usually like to run my track a touch on the loose side. When I had the 3” with 8T drivers I had about 1/8-3/16” and that was to little space for me to be comfortable with, and I had to run tension tighter than I like
 

Jorgy

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May not cause damage but is annoying as hell and where there is restriction there is a slight loss of power, especially when you have to run your track tension a touch on the tighter side because of the lack of clearance. I usually like to run my track a touch on the loose side. When I had the 3” with 8T drivers I had about 1/8-3/16” and that was to little space for me to be comfortable with, and I had to run tension tighter than I like

It only happens after you stop for a little while and you get snow turning to ice build up. So it's gone in the first rotation of the track. I think the small flaws are worth the benefit, but yes ensuing proper track tension is key. I've never had to run tighter than the manual spec though
 

Clode

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I have the 8tooth drivers and they work great. I run manfacturer spec track tension with no issues.
 

tmo1620

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It only happens after you stop for a little while and you get snow turning to ice build up. So it's gone in the first rotation of the track. I think the small flaws are worth the benefit, but yes ensuing proper track tension is key. I've never had to run tighter than the manual spec though

It made noise constantly not just after a stop and freeze up, not as much when it was cold and snow was light but in the spring it was brutal, the sled performed better with the higher gearing and 7t anyway and was a cheap swap over
 
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