300 EX Chain woes [Archive] - ATV Riders Forum

craigdieselmac

11-06-2006, 03:55 AM

I have a 300ex with a 14 tooth front sprocket and a 36 tooth rear sprocket. I am having problems with the chain, it is either too short, or too long. I have 2 chains, both within a link of each other and one is too long and the other too short, no matter how much I adjust the carrier. Just wondering if anyone else had this same problem.
Thanks
Jeff

Trevor

11-06-2006, 11:50 AM

I had that problem when i went 13/36. I had to run a half link till my chain streched some then I removed it. I am planning on going 14/38 next time because I have a good 38t rear to use. I should be about the same as the 13/36. I would like to go with a 250 r rear brake and the smallest rear sprocket I could get just to get more ground clearance.

craigdieselmac

11-07-2006, 10:27 AM

How does a half link work and where would I get one? Sounds like this is the way to go, either that or switch back to a 38 tooth rear. I have a buddy who has the stock set up and his doesn't seem to be much slower than mine. Thanks

Trevor

11-07-2006, 10:31 AM

I got mine at princess auto

rooster300ex

11-08-2006, 08:54 AM

I run 14/36 and i've never had a problem with not getting the right length. I started with an 86 link chain and put the chain on to determine how many links I needed to take off.

craigdieselmac

11-12-2006, 02:38 PM

I have an 86 link chain and it is too long, it sags and pops off, even with my carrier at its tightest. I think that the half link is going to be my only option because an 84 link is one link shy of being right. Are running a stock carrier or an aftermarket? Maybe this would make the difference, I don't see how, but thats all I can figure. I'm gonna call around this week and see if I can't find a half link.
Thanks for the help, if anyone else has anything useful, let me know.
Thanks
Jeff

rooster300ex

11-14-2006, 06:49 AM

Yep I have an aftermaket twin row carrier. I don't see why your having trouble with this. I'm running the same exact setup as you are. All I had to do is take some links out of an 86 length chains. Maybe your not getting the carrier at its shortiest length.

craigdieselmac

11-14-2006, 10:18 AM

THis is possible.. I'll check it out again and see whats up.. I appreciate your help.
Jeff

craigdieselmac

11-14-2006, 11:09 AM

I checked the carrier, it is definatley at its forward most point. What size chain are you using?
Thanks
Jeff

dork

11-16-2006, 11:18 PM

the odd sprocket sizes cause problems if your chain is new, like 13/36, 14/35. etc. i had that problem when i tried 14/35 from 14/34.