850 174 Belt Drive Build

Reddragon800 · Apr 3, 2019

Started as a 163 2.6 belt Drive

Added the following:

Fox Float Evol in the front and the QS3 with lock out in the rear.

Camso X3 174

Iceage rails.

Team Tied Secondary and custom clutching

SSI Titanium can

Kurts Gear down - 2.59 final gearing

Extrovert Drivers

Reddragon800 · Apr 3, 2019

Cant seem to get the pics to load

NorthMNSledder · Apr 3, 2019

Sounds like an interesting build.

Hopefully you can get the pictures to load.

tdbaugha · Apr 3, 2019

How are you coming up with that gear ratio? Kurts kit is 2.37:1 final drive ratio with 7t 2.86p drivers. Did you install 6t 3.00p drivers or something?

boondocker97 · Apr 3, 2019

Plan on using the rear shock lockout feature much with the 174?

kanedog · Apr 3, 2019

boondocker97 said:
Plan on using the rear shock lockout feature much with the 174?

That is a good question. A side x side climb with/without lockout would show the difference.
Reddragon is into testing so Ill bet we will see a test.

Sent from my SM-G920W8 using Tapatalk

Chadly · Apr 3, 2019

I have the lockout QS3s on my Ski Doo 154 NA and the lock out on my 840 Patriot 163 and I think it's Unridable. Blows my mind that this stuff made it to production. It's way too stiff to do anything but go straight up a hill...

DITCHBANGER · Apr 3, 2019

tdbaugha said:
How are you coming up with that gear ratio? Kurts kit is 2.37:1 final drive ratio with 7t 2.86p drivers. Did you install 6t 3.00p drivers or something?

He had mentioned that kurts has more ratios now..

Reddragon800 · Apr 3, 2019

DITCHBANGER said:
He had mentioned that kurts has more ratios now..

Now that you mention it... I have been so used to taking the gear ratio and and then dividing by 0.92 with the old pro stuff that I have been diong that still.

I took the 29/69 gearing and divided by 0.92 which equals 2.59.

Looks like im actually 2.28 gearing.

Still trying to get this picture thing figures out.

Teth-Air · Apr 4, 2019

Reddragon800 said:
Now that you mention it... I have been so used to taking the gear ratio and and then dividing by 0.92 with the old pro stuff that I have been diong that still.

I took the 29/69 gearing and divided by 0.92 which equals 2.59.

Looks like im actually 2.28 gearing.

Still trying to get this picture thing figures out.

.92 for the 3" pitch 7 tooth drivers and .875 for the 2.86 pitch drivers with 7 tooth.

tdbaugha · Apr 4, 2019

I thought Kurts gears were 32t top and 67t bottom for the Axys kit?

Edit: just called Kurts and they do have a 29t top 69t bottom gear down but it’s supposed to be for 600’s. Interesting. 2.71 final drive on 7t 2.86p drivers and 2.58 final drive with 7t 3p drivers.

Nytroty · Apr 4, 2019

Sounds like a cool Build! Can't wait to see it!!!

DITCHBANGER · Apr 4, 2019

tdbaugha said:
I thought Kurts gears were 32t top and 67t bottom for the Axys kit?

Edit: just called Kurts and they do have a 29t top 69t bottom gear down but it’s supposed to be for 600’s. Interesting. 2.71 final drive on 7t 2.86p drivers and 2.58 final drive with 7t 3p drivers.

thats funny for 600's..i geared my 154 doo to 2.73 final drive, and it flat out rocked with excellent holding of rpm,throttle response, cooler belt temps, too many guys worry bout top speed which is never used in pow.Gearing down will be 1st Khaos mod

madmax · Apr 4, 2019

Chadly said:
I have the lockout QS3s on my Ski Doo 154 NA and the lock out on my 840 Patriot 163 and I think it's Unridable. Blows my mind that this stuff made it to production. It's way too stiff to do anything but go straight up a hill...

Depends what kind of snow you ride in. In the west coast heavy wet snow I would think you’d never use lock out. In the Utah dry fluffy snow my rear shock lock out got used quite a bit. Works very well in super deep bottomless snow with a turbo.

kanedog · Apr 4, 2019

Maiden Voyage this weekend for the 850 174!

Reddragon800 · Apr 4, 2019

I have the 29/69 gears with 7 tooth 3" pitch drivers.

Kurt has some 26 tooth top gears that Im going to run. 26/69 = 2.65

Still cant get the pictures to work. Anyone willing to give me there number and Ill text them to you?

niner · Apr 4, 2019

Here you go Ben.

Matte Murder · Apr 5, 2019

Niner is that a 163 tunnel and a 174 track?

niner · Apr 7, 2019

Matte Murder said:
Niner is that a 163 tunnel and a 174 track?

Yes. It’s a 163 belt drive with a 174 X3. That is reddragon800 build.

gonehuntnpowder · Apr 8, 2019

I did something similar in my 16. I like the setup, but I have had factory guys tell me they made changes to the suspension an the 174’s to improve handling. I have never rode a factory 174 so I can’t say. I struggled with cooling and ended up adding the mtntk cooler. I am interested to hear your results.

850 174 Belt Drive Build

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