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Skidoo 850 Clutch kit feedback - ibackshift


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#1 Dynamo^Joe

Dynamo^Joe

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Posted 16 January 2021 - 02:45 PM

From: iBackshift.com Website Form
Sent: Wednesday, October 21, 2020 10:58 PM
To: @ibackshift.com
Subject: www.ibackshift.com: Contact form
Name:Greg B....
Email:[email protected]
     

Comments:

Hi, I was wondering which clutch kit to order? Not sure what the different ramps mean. I I have a 2019 skidoo 850 175", has a light weight hood, diamond s titanium can, tki belt drive, Geared down to their lowest setup (24 top tooth), I normally ride Cooke city MT, 9-10k' I usually won't fill my gas or oil for more weight savings since the mountain riding begins basically right out of town. I weigh 180lbs, and try to keep my bags packed light also. Thanks for the help, Greg

 

greg 175 feedback.jpg

 

ski-doo 850, ski-doo 850 summit, ski-doo 850 clutch kit, ski-doo 850 clutching, Dynamo Joe Clutch kit, Dynamo Joe Clutching, Ibackshift clutch kit, Ibackshift clutching, ski-doo 850 turbo, ski-doo 850 turbo summit, ski-doo 850 turbo clutch kit, ski-doo 850 turbo clutching, ski-doo 850 turbo mods, ski-doo 850 turbo can,



#2 Dynamo^Joe

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Posted 16 January 2021 - 03:05 PM

ian 990s.jpg

Hi Ian.  Thanks for the feedback.

I think the 965's are a little bit more revvy off the bottom end than the 990 ramps.  Im just saying how i feel them when running the sled, they do have 200 rpms more at part throttle than a 990, like say driving along at 35mph going from this snow patch over to that snow patch, they rev just a little higher.  Im not taking anything away from the 990, Me i like lower engine speed at part throttle

 

Really, you could put all 6 ramps in a hat.  3 x 990 and 3 x 965 and dont look and pull a ramp out of your hat.  The ramp you pull out of your hat, go run that ramp at home.

 

Or if you dont feel like doing to work to change the 965 out, just leave them in and run them in the Y00P

 

Thanks

joey

 

 

 

ski-doo 850, ski-doo 850 summit, ski-doo 850 clutch kit, ski-doo 850 clutching, Dynamo Joe Clutch kit, Dynamo Joe Clutching, Ibackshift clutch kit, Ibackshift clutching, ski-doo 850 turbo, ski-doo 850 turbo summit, ski-doo 850 turbo clutch kit, ski-doo 850 turbo clutching, ski-doo 850 turbo mods, ski-doo 850 turbo can,



#3 Dynamo^Joe

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Posted 16 January 2021 - 03:39 PM

Email: [email protected]
Comments: 2005 Renegade 600 SDI.
136x1.25 track.
0-4000' elevation.
Gearing is 20T 43B.
180lbs for rider weight

jakes feedback.jpg

 

ski-doo 850, ski-doo 850 summit, ski-doo 850 clutch kit, ski-doo 850 clutching, Dynamo Joe Clutch kit, Dynamo Joe Clutching, Ibackshift clutch kit, Ibackshift clutching, ski-doo 850 turbo, ski-doo 850 turbo summit, ski-doo 850 turbo clutch kit, ski-doo 850 turbo clutching, ski-doo 850 turbo mods, ski-doo 850 turbo can,



#4 Dynamo^Joe

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Posted 18 January 2021 - 04:18 PM

steve turbo.jpg

 

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#5 Dynamo^Joe

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Posted 18 January 2021 - 11:14 PM

mikes 600 stretch.jpg

 

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#6 Dynamo^Joe

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Posted 19 January 2021 - 10:39 PM

mikes 154.jpg

 

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#7 Dynamo^Joe

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Posted 20 January 2021 - 11:41 PM

-----Original Message-----

Customer: Randy Pxxxxxx

Email: [email protected]

Comments: 2015 skidoo freeride 800 146 2"lug

I'm about 500 above sea level

Weight with gear 320

 

randy kit.jpg

 

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#8 Dynamo^Joe

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Posted 22 January 2021 - 10:22 AM

brian600.jpg



#9 Dynamo^Joe

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Posted 24 January 2021 - 11:11 PM

erics gearing.jpg



#10 Dynamo^Joe

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Posted 25 January 2021 - 11:00 AM

jake fr 2012 feedback.jpg



#11 Dynamo^Joe

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Posted 25 January 2021 - 11:21 AM

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#12 Dynamo^Joe

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Posted 26 January 2021 - 07:04 PM

steve xpert.jpg

 

Hi Steve, thanks for the feedback.

  • mostly between 5000 to 6500 feet, set for 6000 feet
  • full pin underload on a steep hill i hit 8000rpm
  • once in a while i saw 8100 and 8200 unloaded

 

Weight determines engine speed.

IF need less rpms, THEN add more weight

0.5 grams = estimated 100 rpms change.

 

Current setting

16.6g = TI35mm + s7mm + s4mm for 6000’ @ 8000 rpms

Go from 16.6 grams to the next-heavier weight.

17.0g = 30mm + s2mm

…that should push the engine speed down a little bit.

 

Think in slow motion when you “mash throttle”

Want to see the engine accelerate to about 81~8000 (this is track spinning off the start)

Vehicle speed starts to increase

Engine speed goes from 8100~8000~7900 (track hooks up)…continue looking in slow motion

…7900 up to 8000 rpms and stays rock solid at 8000 rpms.

 

IF have rock solid 8000 rpms, THEN can try to add a little more grams.

Go from 16.6 to 17.0g and that should push just about 100 rpms lower.

If you can make the engine float around like 7900~7950~8000~7950 that will be Mint!

 

HP per elevation

6500 feet @ 124hp

5500 feet @ 129hp

4500 feet @ 134hp

3500 feet @ 139hp

2500 feet @ 144hp

 

….so now you have 5hp increase for every 1000 feet you go down.  But wait, you did not change the flyweight grams to match the power increase as you go down in elevation.

 

OK then, make the clutch pull harder for your 30 minute ride up/down.  Take the 4 minutes to clicker down to #1 and let the clutch lower the engine speed and pull better to get lower engine speed at part throttle and better mileage.

 

Hows that

Cya

joey



#13 Dynamo^Joe

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Posted 28 January 2021 - 01:41 PM

Comments: I made a previous order before this and canceled it because i forgot to give you the specs of my sled. so i only want one order of the kit. my sled is a 2007 blizzard 600 sdi with a 121x15x1.5 paddle track on it with 20/43 gearing my weight is 215lb with gear

 

cody 600.jpg

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#14 Dynamo^Joe

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Posted 30 January 2021 - 04:48 PM

chris turbo 850.jpg

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#15 Dynamo^Joe

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Posted 31 January 2021 - 03:46 PM

stuart feedback.jpg






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