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ACTM7
11-05-2015, 09:34 AM
What is stock gearing on 16 800?

RACINSTATION
11-05-2015, 09:37 AM
19/50

ACTM7
11-05-2015, 10:11 AM
Going to have to change that .thanks

d1100t
11-05-2015, 11:20 AM
Are the 2016's geared the same as the 2015's?

Mt Valley Machine
11-05-2015, 11:55 AM
Are the 2016's geared the same as the 2015's?

Yes

Icedog
11-05-2015, 12:49 PM
Going to have to change that .thanks


Yep for sure. Not sure why they keep throwing that gearing in when the concensus is that the ratio is too low. I just installed a 20/49 Hyvo kit in my 2014. Gave the 19/50 a try last winter and hated it.......RPM's are there but the sled just stops pulling mid climb and feels like it hits a wall as far as track speed goes.

Mt Valley Machine
11-05-2015, 01:11 PM
One thing to consider is that the manufacturers of the 3+" tracks suggest not spinning them over 70 mph. 19/50 or 2.63 ratio at 8100 rpm equates to right at 70 mph.

d1100t
11-05-2015, 01:32 PM
Some turbo charged sleds are going to need to run a higher gear ratio or the belt will b running to high in the primary clutch and to low in the secondary clutch

scratley
11-05-2015, 01:36 PM
Instead of fixing clutching issues they just keep gearing it down. 2.33 ratio will create more belt heat than 2.42 no doubt about that. Motor will load and pull harder with 2.33 though.. Fix the clutches and gear it up..

Rinker
11-05-2015, 02:52 PM
One thing to consider is that the manufacturers of the 3+" tracks suggest not spinning them over 70 mph. 19/50 or 2.63 ratio at 8100 rpm equates to right at 70 mph.

Remember to factor in the 7 tooth drivers on a 3" track though. There is like an 8.8% reduction going from 8 T to 7 T drivers. With 19/50 gears you are at a 2.86 ratio. I have 21/49's sitting in the box waiting to change out the 19/50's. I'm going to run it this weekend with the stock gears and then swap out to see what the difference is. With the 21/49 and 7 T drivers, I should be in the 2.53 ratio.

I agree that the 19/50's make it feel like it hit a wall and there should be more there.

Mt Valley Machine
11-05-2015, 05:18 PM
Remember to factor in the 7 tooth drivers on a 3" track though. There is like an 8.8% reduction going from 8 T to 7 T drivers. With 19/50 gears you are at a 2.86 ratio. I have 21/49's sitting in the box waiting to change out the 19/50's. I'm going to run it this weekend with the stock gears and then swap out to see what the difference is. With the 21/49 and 7 T drivers, I should be in the 2.53 ratio.

I agree that the 19/50's make it feel like it hit a wall and there should be more there.

I failed to mention that in my post...that is with the 7 tooth drivers. 8 tooth drivers is close to 80 mph.

CB.8
11-05-2015, 05:27 PM
[QUOTE=Rinker;3873832
I agree that the 19/50's make it feel like it hit a wall and there should be more there.[/QUOTE]

At what speed does it feel like you hit the wall?? If it is over 55 mph I am good with that. 55 in the trees is faster then I want go. And if I see 55 mph track speeds going up hill I will know I have been blessed.

richardderkevorkian
11-05-2015, 06:29 PM
I run a 2.33 tki with 7s on mine with a 156x3. No belt issues.

Rinker
11-06-2015, 12:06 PM
I guess to me it was more throttle position than a MPH wall. I would throw more weight in the MDS weights, but that would pull my RPM down last year. I should have tried a different gear ratio with my belt drive, but never got around to it. I just felt from about 3/4 to full throttle there was more to be had and that was pulling a slope with good powder. You could definitely tell on the trail, but I don't care about top end. No doubt the 19/50 has snap on the bottom- just would like to see it pull all the way through like that and I think it can with the gear change. I will be trying one thing at a time this year to see what the differences are.

ZRrrr
11-06-2015, 03:08 PM
Some turbo charged sleds are going to need to run a higher gear ratio or the belt will b running to high in the primary clutch and to low in the secondary clutch

Ran 21/49 in my turbo last year and did not like it much at all. Didn't notice much of a difference at bottom end, but sure did in the mid to top. Even my riding buddies were asking what happened to my sled. ECU relfashed this year so power is not a problem. Going to start with 22/49 and see where I go from there. I also like the idea of more efficiency and less chain stress with a slightly larger top gear.

J-Dog
11-07-2015, 03:07 PM
Keep the gears change your clutching

Vern
11-07-2015, 11:18 PM
So my search has returned conflicting answers, will a 20 tooth top gear fit in the chain of a 19/50 setup? And are people still liking the higher gears at higher elevations? I do sometimes get the feeling there could be more on the top end but just installed the 19/50 hyvo set up last year so dont want to dump another 200 bones to try higher gears. Oh ya, I ride mostly 7-9000ft

kiliki
11-08-2015, 03:52 PM
on the 2016 with the stock chain you can put in a 20T top gear and leave the 50 on the bottom. it is tight and you have to slide the lower gear most of the way out on the shaft and slide them on at the same time. no adjuster is needed but you can get the manual tensioner to fit. btw the part number for the hyvo 20T top gear for the 16 is 2602-824

WyoBoy1000
11-09-2015, 12:01 AM
One thing to consider is that the manufacturers of the 3+" tracks suggest not spinning them over 70 mph. 19/50 or 2.63 ratio at 8100 rpm equates to right at 70 mph.

The manufacturer is also so stupid your making a killing on A/M parts, lol

2.63 is way to low geared to load the clutches and motor to get the best performance.

I need something like a 2.22 with 7 tooth

ACTM7
11-09-2015, 07:17 AM
When I installed my big bore on my 16 sled I put sprockets off XF sled dealer had that on hand 21 or 22 top 48 bottom. Just know in past stock gearing to low for big bore.

WyoBoy1000
11-11-2015, 01:47 AM
When I installed my big bore on my 16 sled I put sprockets off XF sled dealer had that on hand 21 or 22 top 48 bottom. Just know in past stock gearing to low for big bore.

21/48=2.285 x .09 (for the 7 tooth reduction) = .205 + 2.285=2.49 as a final

22/48=2.18 x .09 =.196 + 2.18 = 2.38

With a BB I think the 22/48 or 2.38 would be great. Just a little lower than the 2.33 that came on the 12 for the 3". Still loads the clutches

with 7 tooth

21/48 = 2.49
22/48 = 2.38