Ski Doo 850 Turbo Overreving....add clutch flyweight grams

[mur190]

Should be 984's. The site below is a great source for factory specs.

https://www.powerlodge.com/high-altitude-setup-charts

Does anyone know what the stock primary ramps are in the 2021 turbo's, 965?

 

[Caper11]

There are many revisions to data sheets. Powerlodge is old data and is not the current revision.

 

[Caper11]

Does anyone know what the stock primary ramps are in the 2021 turbo's, 965?

No they are 994’s.
They are 2g lighter than the 2020.5
The crossbolt is lighter for 2021.

I anticipated this and clutched my sled accordingly for its first ride, 7900-8000 all day.

 

[rknight111]

A screen shot supplied by Caper11, modified to post.

 

[Shortline]

No they are 994’s.
They are 2g lighter than the 2020.5
The crossbolt is lighter for 2021.

May be a silly question but why did doo go lighter? I would assume they learned something from the 20.5s that motivated the lighter weight. If so, what?

I'm currently on clicker 1 and overreving. Trying to get educated before I make a decision as to what to do, although Joe's kit is at the top of my short list.

 

[rknight111]

May be a silly question but why did doo go lighter? I would assume they learned something from the 20.5s that motivated the lighter weight. If so, what?

I'm currently on clicker 1 and overreving. Trying to get educated before I make a decision as to what to do, although Joe's kit is at the top of my short list.

Martins put a longer bolt in mine, it says 8.8 B.Y. This may help not sure

 

[rknight111]

Once the break in is done I will install the kit I got from Dynamo Joe

 

[1709]

All you have to do is put in the 951 ramps and spring, clicker 3, it will pull from engagement to 8000 rpms. takes the over revs away and way better driveability, you will gain track speed also,
now if the 850 t makes the same power from 0 feet to 8000 feet, it would make sense to run the 951 ramps, the 994 ramps are made to run up to 10,000 feet, after 8000 feet you start to lose power, drops from 165hp. that`s why they put in the 984 and 994 ramps, they were installed for high elevations, in BC we do not ride 9000 to 12000 feet.

 

[1709]

 

[Dynamo^Joe]

1709 that is Apr 20 preliminary settings.
This below is commissioned in June. Same for 154. I got this from the race department.

 

[1709]

its the same, whether 984 ramps or 994 ramps, the rest of the specs are the same from 2020 to 2021.

 

[rknight111]

its the same, whether 984 ramps or 994 ramps, the rest of the specs are the same from 2020 to 2021.

The Mass is different too, in 2021 its a 33mm/15.2 gram compared to 2020.5 its 25mm/13.1 gram

 

[1709]

Yes because the 994 ramp is lighter then the 984 ramp so the pivot bold is longer in the 994 ramp
both 984 and 994 ramps have a lot of belt slip, you will notice lots of belt dust. they do not clamp the belt enough in clicker 1.
you need to load the engine, turbo`s need to be loaded.

 

[Caper11]

Guys, do not rely on those sheets as gospel.
Find out what is in your sled, or just add or remove weight as needed.

Lots of info in this thread too.

850T Clucthing Options
https://r.tapatalk.com/shareLink/to...ead.php?t=123968&share_type=t&link_source=app