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850 Top Speeds

9.7K views 52 replies 30 participants last post by  thundercat67  
#1 ·
What are you seeing with 850s ?
 
#4 ·
2018x with 2 miles on sled and dupont slides on ice with a little new snow. Speedo 125, gps 115. I've seen 114gps and 124 speedo a few times on hardpack fire lanes or river. 129" 90 studs and track tight. This has been my worst speedo accuracy of any doo I've seen. At 50mph its off 3mph already and by 100 it's off 10.
 
#5 ·
Speed on the speedo was 118 on my 2018 xrs renegade.

Seen 115 so far on my 19 XRS renegade.

Keep in mind a lot of the top speeds people see in the gauge is actually the sled spinning when it hits a patch of ice at high speeds.

The 115mph on my 19 was on packed snow, so I know it wasn't spinning the track. Don't remember if I paid attention with the 18, I just know that I checked the max speed before I got rid of it and it was 118.

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#10 ·
Here is 116 on the speedo. Pics or it didn't happen... right. Lol. Hard pack seasonal road. I know they are always off a bit but still fun to see it. This is a screen shot from the GoPro. I've hit 120 on the speedo, but no camera that day.
You know the speedo can record the top speed too right? You could just scroll through to top speed and snap a picture of it saying 120 lol.

Not calling you out or anything, I believe these guys anyways without pics. Just making sure you know you have that functionality on your gauge.

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#16 ·
101 mph on a seasonal road with not perfect conditions but gets there in a hurry. Stops pulling at about 100 and could get maybe another 5 mph on the lake or hard pack. Is everything I expected with a 25T top sprocket.
You can get a lot more than 5mph higher than that. The 25t sprocket doesn't limit you much at all.

Both of my last two sleds had a 25t sprocket. I got 118mph on my 2018 and I felt that it had a few mph left after that.

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#22 ·
Ski rider,
It's weird that you need to run on clicker 4 to get 7900-8000 rpm. Most run at that on clicker 3 I believe. I'm pulling 8000 on digital gauge and holds. Too much weight in the clutch may be. I still have the original belt with 3800km and still pulling on the dream meter 180kph or better. Something doesn't seem right. Did you check your track tension?
 
#25 · (Edited by Moderator)
Ski rider,
It's weird that you need to run on clicker 4 to get 7900-8000 rpm. Most run at that on clicker 3 I believe. I'm pulling 8000 on digital gauge and holds. Too much weight in the clutch may be. I still have the original belt with 3800km and still pulling on the dream meter 180kph or better. Something doesn't seem right. Did you check your track tension?
Exactly when i brought up an rpm issue i was informed to adjust clicker. Thats what there for.
To me it seemed like not the proper fix
Hmm

It does hold though and jump right to rpm

I also wonder if my lack of winshield and me sitting straight up is dragging it down across lake