8700 rpm

[Sask Attak]

Now that I have a backcountry and 20T gear installed, at WOT on the lake the highest rpm I had was 8700. Is this acceptable, or what weights should I use in the clutch?

 

[Turk]

8700 is pretty bang on. 86-8900 is sweet spot.

 

[09nytro]

Hey Turk isn't the tachs off a bit . I would think getting up to 8900 to 9000 or i'm i wrong on this

 

[Turk]

tachs are very very close.

 

[Sask Attak]

Just so everyone knows, with these mods I now top out at 80mph.

 

[Turk]

80 mph on hardpack snow or soft fluffy snow?
Huge diff.

 

[Sask Attak]

I was riding in fairly fresh snow on the lake, not packed at all

 

[Schlorven]

i have mounted ulmers clutch kit in my 2011 xtx 250 km (19 teeth top geer and 1,75 back country stud), i have seen 84 mph and 8750-8900 rpm in 8 inch powder snow whit is under, soo the grip was very bad.
It wil be nice to test the machine on hard packet snow

 

[Turk]

There can be 10-15 mph diff in top end in different snow conditions.

 

[Schlorven]

i dont care if the snowmobile make the 90 or 100, it´s the time up to 90 and 100 thats is importen, and that the engine would pull full in deep snow.
Allso i think it´s not so good for the 1,75 studs to to long and fast runs