The Kickass One
Active VIP Member
Anyone try any aftermarket kits or develop anything better then stock?
Or is stock fine!!
Or is stock fine!!
850T Clucthing Options
- Thread starter The Kickass One
- Start date
snopro
Active VIP Member
I'm sure Dynamo Joe has something or will shortly
dragonweld28
Supporting Vendor
Sean and i will be trying a few things for the Turbo 850. One will be a standard clutch kit. weights, springs, helix. The second option will be a team tied conversion. Supper excited for how the Tied will perform with this power.
Boost Monster
Active member
Like Snopro said Call Joey at ibackshift.com. I have had his new 850T kit on my 20.5 for 600miles this past spring! You won’t be disappointed.
Caper11
Active VIP Member
turboetech
Active VIP Member
Did u upgrade to the 994 ramps? Or running the stock 984’s
tbaysledder
Member
joes got kits available
Dynamo^Joe
Active VIP Member
Thanks for the cheers on the kit.
Its basically one kit but with the 4 available ramps for the primary clutch, there is 4 different setting sheets.
https://www.ibackshift.com/comersus/store/comersus_listCategoriesAndProducts.asp?idCategory=14
Scroll down to the bottom of the page for the Ski Doo 850T clutch kits.
27~2800 rpm engagement speed.
Its basically one kit but with the 4 available ramps for the primary clutch, there is 4 different setting sheets.
https://www.ibackshift.com/comersus/store/comersus_listCategoriesAndProducts.asp?idCategory=14
Scroll down to the bottom of the page for the Ski Doo 850T clutch kits.
27~2800 rpm engagement speed.
turboetech
Active VIP Member
Joe have you tried the 994 ramps versus the 984 stock in the 2020 T? Any benifts pros or cons in changing to the 994 ramps?
Dynamo^Joe
Active VIP Member
turboetech) joe have you tried the 994 ramps versus the 984 stock in the 2020 T?
Joe) No. Just the 984.
Turbotech) Any benefits pros or cons in changing to the 994 ramps?
Joe) A 984 weighs 51 grams. A 994 weighs 49.1 grams. They are the same exact profile, just the underside of the roller curve is thinned around 2mm to give it that 1.9 grams lighter.
I'll mention what it "does"....and then you decide.
IF flyweight determines engine speed
and
IF a rule of thumb 1 gram = 200 rpms change
THEN the more heavy weight [984] will produce less engine speed than the [994] if they have the same pivot bolt weight.
Add 1.9 grams of pivot on the 994 and the full throttle engine speed should be the same as the 984
Thanks
Joey
Joe) No. Just the 984.
Turbotech) Any benefits pros or cons in changing to the 994 ramps?
Joe) A 984 weighs 51 grams. A 994 weighs 49.1 grams. They are the same exact profile, just the underside of the roller curve is thinned around 2mm to give it that 1.9 grams lighter.
I'll mention what it "does"....and then you decide.
IF flyweight determines engine speed
and
IF a rule of thumb 1 gram = 200 rpms change
THEN the more heavy weight [984] will produce less engine speed than the [994] if they have the same pivot bolt weight.
Add 1.9 grams of pivot on the 994 and the full throttle engine speed should be the same as the 984
Thanks
Joey
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turboetech
Active VIP Member
^^^Thanks I assumed the ramp angle changed between the two and was thinkin to change to the 994 cuz my 850 T was hitting the rev limiter with the clickers turned up stock so I added bolt weight to keep rpm around 7900 maybe brp made a mistake and turned the hp up on this ride...will be ordering your kit soon thx
Last edited:
Dynamo^Joe
Active VIP Member
984 @ 51.0g + 16.7g pivot = 67.7g (MY 20.5)
994 @ 49.1g + 15.2g pivot = 64.3g (MY 21)
Both have the blue/purple 150/350 primary spring. The 994 should be revving higher than the 984 setup, so yeah, I can see you needing to add weight to push engine speed down to 7900 again.
994 @ 49.1g + 15.2g pivot = 64.3g (MY 21)
Both have the blue/purple 150/350 primary spring. The 994 should be revving higher than the 984 setup, so yeah, I can see you needing to add weight to push engine speed down to 7900 again.
drew562
Active VIP Member
How do I get a kit for my turbo from you. ?
TreeThrasher
Member
So they lightened the overall setup in the primary for 2021?
Does that mean they reduced the output for 2021? None of the 2020.5 sleds I was around had any issues making rpm
Does that mean they reduced the output for 2021? None of the 2020.5 sleds I was around had any issues making rpm
- Thread starter
- #16
The Kickass One
Active VIP Member
Kit ordered... Thanks Joe
maxwell
Active VIP Member
..........
Dynamo^Joe
Active VIP Member
Right here Buddy...
https://www.ibackshift.com/comersus/store/comersus_viewItem.asp?idProduct=146
can also email me any questions...
info at ibackshift dot calm
Dynamo^Joe
Active VIP Member
have a look at the settings here
Ski Doo 850 Turbo clutch changes 20.5 v 21 (and misc tuning)
The power is the same as last season.
TreeThrasher
Member
So if power is truly the same, secondary setting appears to be the same, im assuming but gearing appears to be the same, primary spring is the same, ramp profile is the same but overall weight is lighter by 3 grams. So does that mean that effective angle the ramp is being held in the clutch is different? Like a clicker position -2 or something?
