Author Topic: Chain guide problem (Read 14512 times)

Uns · « **Reply #30 on:** June 07, 2016, 11:30:33 AM »

Interesting and worrying thread. I just ordered a LSR +4 last week on ebay, along with the cheaper $75 "Lonestar chain guide set". Not sure if I'll get it in a week or if it's a "Special order" month long wait. I'll report back if I run into any fitment issues

Troy · « **Reply #31 on:** June 07, 2016, 12:11:27 PM »

It will probably take a few weeks mine did. What axle and carrier are you running?

Uns · « **Reply #32 on:** June 07, 2016, 01:32:45 PM »

Both carrier and axle are LSR, bought around two years ago. I'd figure that I'd have as good of a chance as anyone to have it line up with all the LSR stuff I have.

I went cheap and picked up this:
http://www.ebay.com/itm/1986-1987-Honda-TRX-250R-Lonestar-Chain-Guide-Set-/120979323810?

We'll see if I regret that guide set or not.

Troy · « **Reply #33 on:** June 07, 2016, 01:53:24 PM »

Hope it works out, this is frustrating me, I have mentally masterbated it to death a few times now.

Skeans1 · « **Reply #34 on:** June 08, 2016, 09:15:56 AM »

Quote from: Troy;68112

How old is your swingarm, I guess they have changed them over the years. Called lsr, sent pics they say it's supposed to be 3/4" off the swingarm. I might end up putting the chain guide in the mill and making a spacer for it to move it over.

Is it possible they set the chain guide up for a dirt bike one say a cr for 450 or something?

rablack21 · « **Reply #35 on:** June 08, 2016, 09:26:48 AM »

Can you post pics showing from the front sprocket all the way to the back sprocket? Just so we can take a look to see if we see anything out of the ordinary.

Troy · « **Reply #36 on:** June 08, 2016, 09:31:02 AM »

I have no idea, I don't know the measurements of any of those. I spent some time in the shop last night pulling measurements, and making sure things where square and it appears my sprockets do line up, and the chain guide is a 1/4" off. Lsr's shop forman was going to check out his 250r and they were going to get ahold of me yesterday but I never heard anything. So I'm leaning towards milling the chain guide and making a spacer plate.

rablack21 · « **Reply #37 on:** June 08, 2016, 09:36:45 AM »

Quote from: Troy;68140

I have no idea, I don't know the measurements of any of those. I spent some time in the shop last night pulling measurements, and making sure things where square and it appears my sprockets do line up, and the chain guide is a 1/4" off. Lsr's shop forman was going to check out his 250r and they were going to get ahold of me yesterday but I never heard anything. So I'm leaning towards milling the chain guide and making a spacer plate.

I would leave that idea to a last resort. If they swinger is wrong, make them fix it. You paid good money for the part, they should honor that. So I would have them make sure that the part is right or wrong first. If wrong, make them fix it. If correct, then do your own mods.

rablack21 · « **Reply #38 on:** June 08, 2016, 09:37:53 AM »

Surely you can get some input from others who are running the exact same swinger. I know there are guys on this forum who have the same one. See how theirs measure up. If yours is not the same as theirs, then something is wrong. Let LSR know that.

Troy · « **Reply #39 on:** June 08, 2016, 10:16:39 AM »

I talked to oldschoolr, his is an old one so it's different, I did tell lsr that the thesmith86r measured up different than mine. Hopefully I will hear from them today.

Troy · « **Reply #40 on:** June 08, 2016, 01:15:19 PM »

They just got back to me, double check their measurements and assure me it was built correctly, so maybe something is wrong on my end, (tweaked frame or motor mounts not sure). Can't find anything obvious though

thesmith87250r · « **Reply #41 on:** June 08, 2016, 01:25:47 PM »

why would my swing arm have a different measurement did they say anything about that ?

Troy · « **Reply #42 on:** June 08, 2016, 02:07:55 PM »

No they didn't, but they have changed them over the years, how old is your swingarm

thesmith87250r · « **Reply #43 on:** June 08, 2016, 02:49:54 PM »

2 years maybe 3 i had it. But how long ago it was made before it sold ? I have no idea

Uns · « **Reply #44 on:** June 08, 2016, 02:58:38 PM »

Quote from: Troy;68148

They just got back to me, double check their measurements and assure me it was built correctly, so maybe something is wrong on my end, (tweaked frame or motor mounts not sure). Can't find anything obvious though

From your pictures, it really doesn't look like your chain guide will fit unless you spacer out your rear sprocket from the carrier. Maybe you could get measurement numbers from LSR on the edge of swingarm carrier area to sprocket and carrier to sprocket?

The whole thing doesn't make much sense to me. What could they have changed that would require a 1/2" change in guide position, except for changing where the rear sprocket lines up relative to the swingarm by 1/2"? It'd make sense if, say, they reduced the overall width left-to-right of the arms by 1" symmetrically at the rear and had to add 1/2" to make up for width loss.

It'd be a very interesting measurement to know the difference between Troy's and TheSmith's right-to-left and right-to-outer-edge-of-chain-guide widths, at the chain guide point.