Assault 2017 cooling vs 2018 - HCS Snowmobile Forums

Switchback Assault/SKS/RMK (AXYS Platform) This is a brand-specific forumand a 100% NO BASH Zone. Posts on this forum are assumed to be questions aimed at similar model owners, and are not looking for comments of a sarcastic or "bashing" nature. Please be aware that if you violate this policy you are in danger of losing your posting privileges on this website.The calling out or posting of another members personal information IE phone number or address is prohibited.

Like Tree2Likes
Reply
 
LinkBack Thread Tools
Old 12-24-2017, 09:08 AM   #1 (permalink)
Super Advanced Member
 
Doug S's Avatar
 
Join Date: Mar 2004
Posts: 5,445
Current Sled(s): 2020 850 XC, RXL'S, Indy's
Previous Sled(s): 2019 850 XC 2017 & 2018 Assualt 2016 SB 2015 Axys SB
Location: Oshkosh Wi
19-20 Mileage:
18-19 Mileage: 3824
17-18 Mileage: 3802
16-17 Mileage: 2356
Default Assault 2017 cooling vs 2018

I had a 2017 Assault that I didn't like the temps it was running at first. I originally had full length tunnel protects and the temp would go up quickly on hard pack or low snow conditions. Pulled the tunnel protectors out and drilled holes in them to let the snow get to the cooler with really no difference. Did a bunch of measuring and found I had enough clearance to run without tunnel protectors as I only had the center studded so I pulled them out. This dropped the temps for normal riding a little but the temps still shot up on hard pack or low snow and took a while to come back down when I got back onto good snow. I had my wife ride my sled to see the how much snow was going up into the tunnel and how much was going under the snow flap and was surprised at the snow going under the snow flap. I installed the SKS snow flap and noticed the temp drop during normal trail riding averaging 125-130, taking longer to climb in hard pack or low snow and dropping faster once I got back onto good snow. I never put scratchers on although that was an option just don't like scratchers.

Had a chance to put on about 400 miles on my 2018 with the SKS snow flap installed in snow conditions ranging from good snow to low snow where I would have seen temps go over 140 plus on my 2017 and the highest I seen was 133. Dips off into the snow when I could seen the temp drop a lot quicker compared to my 2017. Average riding temps on the 2018 were 116 or less in good snow.
Bontz likes this.
Doug S is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-24-2017, 09:16 AM   #2 (permalink)
Site Moderator - Chris
 
Bontz's Avatar
 
Join Date: Dec 2002
Posts: 19,496
Current Sled(s): 2019 Indy XC 850
Previous Sled(s): '16 SB Pro-X; '15 Rush Pro-S; '12 SB Pro-R; '09 Dragon -Cats
Location: MN
Favorite Riding Area: Lake Namakagon/Cable, WI
19-20 Mileage:
18-19 Mileage: 1352
17-18 Mileage: 2032
16-17 Mileage: 825
Age: 46
Riding Since: 1975
Default

Doug - was that 133 temp you saw as high as it would go when running in marginal snow? Just curious. Last weekend when we were up north, we had several miles of plowed down forest road and my Assault got up into the 140 range before I started to dive into the sides of the road. I don't have the SKS flap (yet) but am still considering it. I was really pretty happy with the temps my sled ran with the stock snow flap and no scratchers.

Thanks again for all your help & information you've shared over the past year!
Bontz is offline   Reply With Quote
Old 12-24-2017, 09:29 AM   #3 (permalink)
Super Advanced Member
 
Doug S's Avatar
 
Join Date: Mar 2004
Posts: 5,445
Current Sled(s): 2020 850 XC, RXL'S, Indy's
Previous Sled(s): 2019 850 XC 2017 & 2018 Assualt 2016 SB 2015 Axys SB
Location: Oshkosh Wi
19-20 Mileage:
18-19 Mileage: 3824
17-18 Mileage: 3802
16-17 Mileage: 2356
Default

Quote:
Originally Posted by Bontz View Post
Doug - was that 133 temp you saw as high as it would go when running in marginal snow? Just curious. Last weekend when we were up north, we had several miles of plowed down forest road and my Assault got up into the 140 range before I started to dive into the sides of the road. I don't have the SKS flap (yet) but am still considering it. I was really pretty happy with the temps my sled ran with the stock snow flap and no scratchers.

Thanks again for all your help & information you've shared over the past year!
That was on marginal snow and I was able to dip into some snow at the point it hit 133. I'm sure it would have crept up higher but when I dropped into the snow it dropped back quick.

I did not ride the sled with the stock snow flap going by what I seen on the 2017 wanted it on from the start. Seeing the temps I was running I'm not sure if it will be needed.
Doug S is online now   Reply With Quote
 
Old 12-24-2017, 10:15 AM   #4 (permalink)
rff
Super Advanced Member
 
rff's Avatar
 
Join Date: Mar 2003
Posts: 255
Location: Ortonville, MI
Default

Did you have to modify anything or drill new holes for the SKS snowflap? Just curious, as this seems like a road I will heading down in near future.
rff is offline   Reply With Quote
Old 12-24-2017, 10:19 AM   #5 (permalink)
Super Advanced Member
 
Join Date: Oct 2010
Posts: 364
Current Sled(s): 2017 assault 800/ 2017 600 assault
Previous Sled(s): doo rs 860 mod,xp tnt, mxz,cat, merc
Location: northern lower michigan
Favorite Riding Area: leelanau co.
Riding Since: 1971
Default

It doesn't matter what year the flap sucks. The sks flap keeps the temp down and throws more snow up into the tunnel like doug stated. I went down this road with a couple sno-x chassis sleds I have ran on the trails. They had the stock sno-x rooster flaps. As soon as I changed the flaps, low temps. PDP flaps are what I used on them. PDP makes a poo flap, but it doesn't have the hook in it, Its more like the sno-x flap. They do make a nice doo flap if the sks flap breaks because of its hardest I will mod it on the sba.
big tom is offline   Reply With Quote
Old 12-24-2017, 10:20 AM   #6 (permalink)
Super Advanced Member
 
catskillmike's Avatar
 
Join Date: Nov 2012
Posts: 2,460
Current Sled(s): 18'switchback assault 800
Previous Sled(s): 15 pro-s sb,10 d8 01 xcsp 800
Location: catskill ny
Default

i did see 140's 1st time out, all hard pack no fresh loose snow.
catskillmike is offline   Reply With Quote
Old 12-24-2017, 10:21 AM   #7 (permalink)
Super Advanced Member
 
TurboJamie's Avatar
 
Join Date: Oct 2007
Posts: 4,571
Current Sled(s): 2019 XRS 900 Turbo
Previous Sled(s): 2018 Ski-Doo BCX 850
Location: Gta
Favorite Riding Area: Northern Ontario
19-20 Mileage:
18-19 Mileage: 9,253 km
17-18 Mileage: 7,900
16-17 Mileage: 7,130 km
Riding Since: 1984
Default

You got a part number for that snow flap I think I want to pick one up for my 18.
TurboJamie is offline   Reply With Quote
Old 12-24-2017, 10:32 AM   #8 (permalink)
Super Advanced Member
 
1fast444's Avatar
 
Join Date: Aug 2013
Posts: 241
Current Sled(s): 2009 polaris iq shift 600 128" 1.25 Ice Attac
Previous Sled(s): 74customII530,76tx340,79txl,86indy4,95ss,97xcf,99xc6sp,2002
Location: xc6sp, 01xc6sp, 02xc7sp, 07fst, 11 IQ turbo and SE WIS.
Favorite Riding Area: U.P.
19-20 Mileage:
18-19 Mileage: 1600
Age: 39
Riding Since: 1988
Default

5451976-070 flap, snow, blk
tbone99 likes this.
1fast444 is offline   Reply With Quote
Old 12-24-2017, 10:42 AM   #9 (permalink)
Super Advanced Member
 
Join Date: Oct 2008
Posts: 428
Default

Quote:
Originally Posted by rff View Post
Did you have to modify anything or drill new holes for the SKS snowflap? Just curious, as this seems like a road I will heading down in near future.
There's a post on here somewhere that went into detail on the install. If I recall you would have to either new hole(s) or not use an existing hole. Not 100% direct replacement utilizing existing holes.
sotapop20 is offline   Reply With Quote
Old 12-24-2017, 10:46 AM   #10 (permalink)
Super Advanced Member
 
xp8gade's Avatar
 
Join Date: Sep 2007
Posts: 157
Current Sled(s): 2019PolarisSKS850
Previous Sled(s): 17SBA814bcx812BcX810Gad8x96XCR6,01XC7,01XC8,04XPSSDI,08Gad8X
Location: Remus,Mi
Favorite Riding Area: Nahma,Mi Halfway Lake,Mi
Age: 47
Default

Anyone know the temp sled would need to hit to go into limp mode or have a warning light go off? Just curious
xp8gade is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 09:04 AM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.