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850 jerky throttle at low speeds


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#1 Ultrastryk

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Posted 20 February 2021 - 08:11 PM

I just bought a 2021 Gade XRS after two years on an 850 Assault. The first thing I noticed is how touchy the throttle is starting out or trying to ride slowly down a rough trail. I thought it was just because I was used to the Polaris throttle, but I have put a couple hundred miles on this sled, and it still seems fairly jerky. Is there anything that can be done about this?


Current sled: 2018 SBA 144, 18 Blizzard 600

Past sleds:

2017 Renegade BC
2015 XRS Renegade 800
2013 Renegade X 800
2010 Renegade 1200
2010 XRS 800
2009 Renegade X 1200
2008 XP 800
2006 Rev 800 X
2005 Firecat
2003 Firecat
2002 Polaris XC 800
2000 Yamaha SRX 700
1998 Yamaha SRX 700
1993 Polaris Ultra
1992 Polaris XLT
1986 Polaris Indy 600
1980 Yamaha Invader 440
1978 John Deere Liquifire
1982 Arctic Cat El Tigre


#2 AA2520

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Posted 20 February 2021 - 08:27 PM

I have 4600mi on my 18 gade, just had to get used to it



#3 xdude

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Posted 20 February 2021 - 08:36 PM

‘21 is much tamer than my ‘17



#4 Sportsman1776

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Posted 20 February 2021 - 08:44 PM

This is why they need to put the iTC throttle on the E-TECs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

:popcorn:


"A nation of sheep will beget a government of wolves" - Edward R. Murrow

“It is well enough that people of the nation do not understand our banking and monetary system, for if they did, I believe there would be a revolution before tomorrow morning.” - Henry Ford

"Those who would give up essential liberty, to purchase a little temporary safety, deserve neither liberty nor safety." -  Benjamin Franklin 

Please help keep our trails open! - Keep your sled quiet, stay on the trails and get involved with a club!

“The difference between stupidity and genius is that genius has its limits.” - Albert Einstein

"By failing to prepare, you are preparing to fail." - Benjamin Franklin

Two is one, one is none, three's a guarantee.


#5 xdude

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Posted 20 February 2021 - 10:08 PM

This is why they need to put the iTC throttle on the E-TECs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

:popcorn:

Nice try........



#6 djm

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Posted 20 February 2021 - 10:55 PM

This is why they need to put the iTC throttle on the E-TECs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

:popcorn:

 

No drive by wire.  The issue is clutching as been shown by Joey!  



#7 djm

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Posted 20 February 2021 - 11:04 PM

I just bought a 2021 Gade XRS after two years on an 850 Assault. The first thing I noticed is how touchy the throttle is starting out or trying to ride slowly down a rough trail. I thought it was just because I was used to the Polaris throttle, but I have put a couple hundred miles on this sled, and it still seems fairly jerky. Is there anything that can be done about this?

 

It is all clutching.. Joey has can make it all better!   https://www.dootalk....4#entry23457165

it is due to the steep hump on the ramp right off idle that the roller has to climb initially.  There are other ramps available without the hump, and you can get a lower engagement speed primary spring through Joey and Dalton.  

 

The shims for belt/clutch side gap adjustment which is another part of it, can be purchased at Goodwins.  https://www.goodwinp...r-shims-pdrive/


Edited by djm, 20 February 2021 - 11:08 PM.


#8 djm

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Posted 20 February 2021 - 11:09 PM

I have 4600mi on my 18 gade, just had to get used to it

 

No you don't...  there are fixes.. 



#9 djm

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Posted 20 February 2021 - 11:10 PM

This is why they need to put the iTC throttle on the E-TECs.

 

 

What an awful solution!  

 

 

 

 

 

 

 



#10 Mach-ster

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Posted 20 February 2021 - 11:45 PM

Another vote for clutching!! HRSS kit took care of issue and better performance as a added benefit!! Definitely NO drive by wire crap
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#11 Ultrastryk

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Posted 21 February 2021 - 07:20 AM

Thanks guys, good to know that a different spring and ramps will take care of the problem. Now, I just need to figure out which clutch puller is my doo one. After being on a Polaris since 2018, I haven't pulled a Doo clutch for awhile :)


Current sled: 2018 SBA 144, 18 Blizzard 600

Past sleds:

2017 Renegade BC
2015 XRS Renegade 800
2013 Renegade X 800
2010 Renegade 1200
2010 XRS 800
2009 Renegade X 1200
2008 XP 800
2006 Rev 800 X
2005 Firecat
2003 Firecat
2002 Polaris XC 800
2000 Yamaha SRX 700
1998 Yamaha SRX 700
1993 Polaris Ultra
1992 Polaris XLT
1986 Polaris Indy 600
1980 Yamaha Invader 440
1978 John Deere Liquifire
1982 Arctic Cat El Tigre


#12 Wink1

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Posted 21 February 2021 - 07:29 AM

Thanks guys, good to know that a different spring and ramps will take care of the problem. Now, I just need to figure out which clutch puller is my doo one. After being on a Polaris since 2018, I haven't pulled a Doo clutch for awhile :)

You’re going to need a different puller for the Pdrive.


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#13 Ultrastryk

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Posted 21 February 2021 - 05:13 PM

You’re going to need a different puller for the Pdrive.

Just noticing that :(


Current sled: 2018 SBA 144, 18 Blizzard 600

Past sleds:

2017 Renegade BC
2015 XRS Renegade 800
2013 Renegade X 800
2010 Renegade 1200
2010 XRS 800
2009 Renegade X 1200
2008 XP 800
2006 Rev 800 X
2005 Firecat
2003 Firecat
2002 Polaris XC 800
2000 Yamaha SRX 700
1998 Yamaha SRX 700
1993 Polaris Ultra
1992 Polaris XLT
1986 Polaris Indy 600
1980 Yamaha Invader 440
1978 John Deere Liquifire
1982 Arctic Cat El Tigre


#14 Radicalrex

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Posted 22 February 2021 - 09:20 AM

Just finished up a few suggestions from Ibackshift, dynomo^joe has your and many others issue with jerky throttle under control for me and my ridding area.
All parts were oem. Changed my ramps to 982s (stock pivot bolts) and new springs in both primary and secondary. 5-20 mph with ease now. Ramp profile I’d say is a lot of it, but the spring changes make it all come together. This is definitely much better in the 2-3’ rollers maintaining clutch engagement at slow speed.

Edited by Radicalrex, 22 February 2021 - 07:25 PM.

Lead, follow or get out of the way..

#15 Sportsman1776

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Posted 22 February 2021 - 09:45 AM

It is all clutching.. Joey has can make it all better!   https://www.dootalk....4#entry23457165

it is due to the steep hump on the ramp right off idle that the roller has to climb initially.  There are other ramps available without the hump, and you can get a lower engagement speed primary spring through Joey and Dalton.  

 

The shims for belt/clutch side gap adjustment which is another part of it, can be purchased at Goodwins.  https://www.goodwinp...r-shims-pdrive/

 

 

Just finished up a kit from Ibackshift, dynomo^joe has your and many others issue with jerky throttle under control.
All parts were oem. Changed my ramps to 982s (stock pivot bolts) and new springs in both primary and secondary. 5-20 mph with ease now. Ramp profile I’d say is a lot of it, but the spring changes make it all come together. This is definitely much better in the 2-3’ rollers maintaining clutch engagement at slow speed.

 

 

So if you change the ramps and springs and do as described to "smooth" out the engagement and/or low speed response, do you lose anything anywhere else?  Mid-range pull?  MPGs?  Why is Ski-Doo not doing this from the factory?  The OP says he has a '21, so did they (Ski-Doo) make any changes throughout the years and make them better or worse?


"A nation of sheep will beget a government of wolves" - Edward R. Murrow

“It is well enough that people of the nation do not understand our banking and monetary system, for if they did, I believe there would be a revolution before tomorrow morning.” - Henry Ford

"Those who would give up essential liberty, to purchase a little temporary safety, deserve neither liberty nor safety." -  Benjamin Franklin 

Please help keep our trails open! - Keep your sled quiet, stay on the trails and get involved with a club!

“The difference between stupidity and genius is that genius has its limits.” - Albert Einstein

"By failing to prepare, you are preparing to fail." - Benjamin Franklin

Two is one, one is none, three's a guarantee.





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