Help -- Weird Downhill Engine Braking????

03RMK800 · May 22, 2011

The clutches and engine on my 2010 800R XP Rev Everist (app 200 miles) are acting like a modern ATV CVT on a 4 stroke-- If I head down a steep hill with the belt engaged and throttle closed, the engine holds at about 5500 rpm and the sled at about 21 mph.

Can increase speed with throttle.

Acts "normal" (coasts) if I start down the hill without the belt engaged.

I never heard of dynamic engine braking on a sled but this one sure acts like it. Any experiences with this? Any ideas?
Thanks!

sledsrock · May 22, 2011

Yep, they can do that. It's a nice benefit to have engine braking at times. Mine does it as well.

Van Epps · May 22, 2011

It's called backshift and its a great / desirable trait ... If ur mountain riding! Helps a lot on steep downhill decents when track wants to lock under braking. Learn to use it 2 ur advantage.

03RMK800 · May 22, 2011

Thanks-- I just had not had this happen in 46 years of riding. It seems strange that the engine actually holds RPM like the ATV four strokes. I was worried about it, especially after the voice at the other end of the line told me to get the sled back to the dealership ASAP. I'm waiting to see what they say, and what they do about using 2 quarts of oil in 34 miles and 5 gallons of gas.

Van Epps · May 22, 2011

I can see 5 gal in 34 miles of deep snow riding...2 qts is excessive 4 sure. I usually burn 1 qt per ride...35-50 miles and 7-9 gallons.

jpxp154 · May 23, 2011

Normal, its a nice feel with control coming down something steep in the spring.

Arctic Thunder · May 31, 2011

jpxp154 said:
Normal, its a nice feel with control coming down something steep in the spring.

I am not to sure this is a "nice feel". I can tell ya, when it's steep and slick and you let off the gas going down hill you have 10x the control using the break to control the decent and keep the track "rolling" compared to having to bump the throttle to get the engagement up enough to keep the darn track rolling. Ski doo has the "STIFFEST" secondary spring I have ever seen. When you have it cranked up like this it is going to hold like it does.

Personally I would rather have the sled coast when letting off the throttle rather than pitch you over the bars.

Again I know I should shut up and get back into the AC forum. But I can't help it.

Honestly I am just trying to figure these XP's out a bit. I have a buddy with one and we continually try and improve on a great sled. This engine breaking has been a topic of discussion after our last couple rides.

Thunder

SkiDooHoser · May 31, 2011

I find that the engine breaking when in the trees tends to make the sled pull you away from the hill. Kind of a diving affect. Especially in spring snow.

Summit8 · May 31, 2011

The backshift is very desirable on downhill descents.IMHO.

03RMK800 · Jun 3, 2011

Thanks to all who responded. I guess its normal for a Skidoo--it just didn't happen on my first Skidoos-- 1966 Alpine, 1965(?) Olympique.
I prefer how the Polaris clutches repond-- they allow coasting, and will allow RPM to come up quicker from a low speed/stopped situation. Its a learning experience to ride the Skidoo clutches.

snowmobiler · Jun 3, 2011

clutch braking can save you from having a totaled sled.

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Help -- Weird Downhill Engine Braking????

03RMK800

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sledsrock

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Van Epps

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03RMK800

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Van Epps

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jpxp154

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Arctic Thunder

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SkiDooHoser

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Summit8

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03RMK800

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snowmobiler

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