Hi everybody,

I have a 95 Polaris 300 4x4. I replaced the sprocket (front sprocket for the rear chain) on the transmission output shaft. The old sprocket had 12 teeth and the new one 13. How will this additional tooth effect performance. Thanks in advance!!

 

One tooth larger on front about equal to 3 tooth smaller rear sprocket, slightly higher top end speed, a little quicker,not much low end power loss. Did this on my street bike,at same speed with larger sprocket rpms slightly lower than stock,no noticeable low end power loss.

 

OPT, thanks for your reply. That's what I thought but wasn't sure. Actually the specs call for a 13T but somewhere down the line a 12T was installed. No big deal either way. Thanks again and all the best.

 

OPT does that difference change the ratio of the awd. I needed a new inner front sprocket for the rear chain,(if that makes sense?) for my wifes Scrambler. The one dealer wanted to give me a 13T but the parts list called for a 12T. I thought it would screw up the AWD ratio and eventually screw something up. I was able to get the one that it had on it from the factory from a different dealer. After reading this post I'm not sure if it would have messed it up or not. Could you fill me in on what it would do.

 

Not much noticeable difference as posted above,the only reason I did it on my streetbike was to lower rpms a little,so not so buzzy in high gear,wasnt out to improve takeoff ,etc. IT DOES change the ratio anytime different sprockets are used,but no big deal! opt

 

I just thought the AWD kicked in when the back tires turned 1/5 more than the front. By changing sprockets would this cause it to kick in at 1/8 the turn or 1/2 the turn. (Just throwing numbers out there not actual stats) I am not questioning your all mighty advice just making sure you understand what I'm asking cause I would hate for the guy to trash out his AWD. Thats what I was afraid of when the one dealer wanted to sell me the wrong sprocket. I know that someone on here said you had to stick to the correct ratio when putting larger tires on it so I thought the same would go for sprockets?

 

Double Post...

 

<div class="FTQUOTE"><begin quote>Originally posted by: Rowe

I just thought the AWD kicked in when the back tires turned 1/5 more than the front. By changing sprockets would this cause it to kick in at 1/8 the turn or 1/2 the turn. (Just throwing numbers out there not actual stats) I am not questioning your all mighty advice just making sure you understand what I'm asking cause I would hate for the guy to trash out his AWD. Thats what I was afraid of when the one dealer wanted to sell me the wrong sprocket. I know that someone on here said you had to stick to the correct ratio when putting larger tires on it so I thought the same would go for sprockets?</end quote></div>

[img]i/expressions/face-icon-small-happy.gif[/img] You can get lost in the quagmire of computing ratios on sprockets and tire sizes,etc! Who really is able to tell the difference between 1/5 turn or 1/8 turn of rear wheel slip when front powers up?I"ve seen all sorts of tire/sprocket setups over 20 years,JUST depends on what you want really! 1/8 rear tire slip is supposed to be approx when front kicks in when stock(at least for the older electro/mechanical activated strut hub system) I havent seen any machine that was damaged in any way because of sprocket changes front or rear

 

Sounds good. Wish I would have known that earlier. I just thought I would screw it up and end up being in AWD all the time or really mangling the gears. So thanks a lot, cleared up my question.