Chain touching tyre???

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Mikeylikesit
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Re: Chain touching tyre???

Post by Mikeylikesit » Mon Jun 24, 2013 6:33 pm

if all is correct there is no way the chain can rub the tire. I have a feeling you have a wornout chain. try going to the rear sprocket and from the rear pull on the chain. if it comes away from the sprocket it is a sign of stretch. if it feels loose on the sprocket it is definately worn. I say this because a worn chain will have a lot more sideways sag than a new chain. so when leaned over the slack portion can sag a lot. hope that helps.

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Re: Chain touching tyre???

Post by Roadhawg » Mon Jun 24, 2013 6:37 pm

Mikeylikesit wrote:if all is correct there is no way the chain can rub the tire. I have a feeling you have a wornout chain. try going to the rear sprocket and from the rear pull on the chain. if it comes away from the sprocket it is a sign of stretch. if it feels loose on the sprocket it is definately worn. I say this because a worn chain will have a lot more sideways sag than a new chain. so when leaned over the slack portion can sag a lot. hope that helps.

Shot I'll have a look at that.

As far as the previous seller says the chain is pretty new, but on the lower section I can push it towards the tyre and make it touch.

I can't believe I'm the only person with this problem :lol:
Absolutely loving the bike otherwise.

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Re: Chain touching tyre???

Post by Ktkeith » Tue Jun 25, 2013 11:15 am

Have you checked the cush drive rubbers perhaps the wheel is twisting under power.

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Re: Chain touching tyre???

Post by BradTaz » Tue Jun 25, 2013 4:00 pm

+ 1 for Mikeylikesit. Check the chain pulling off the most rearward part of the sprocket as he says on four or five different sections of the chain. Somehow (no idea why) chains can stretch in sections, and when that stretched section is pulled together by being locked in the rear sprocket teeth, all of a sudden the rest of your chain becomes tight!

Also regarding your burning oil, check the braided lines going to the oil tank. There's a small thread somewhere on this site that mentions one of those lines weeping when the bike was revved harder. Mine did it from the moment I picked it up regardless of revs, a quarter of a turn with a 19mm spanner and all is fixed. Hope it works for you, as it's a lot easier to fix than an output shaft seal.

Good luck.
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Re: Chain touching tyre???

Post by gotgoat » Wed Jun 26, 2013 8:03 am

This has happened to me . your chain is no good . time to replace it . I changed the chain and sprockets, it all went away. My chain had 25,000. k on it . my tire has the same markings. I still use the tire, its fine. :oops: :oops:
81gs750e, 76rd400,05wr250,96xr400.

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Re: Chain touching tyre???

Post by Roadhawg » Wed Jun 26, 2013 7:38 pm

gotgoat wrote:This has happened to me . your chain is no good . time to replace it . I changed the chain and sprockets, it all went away. My chain had 25,000. k on it . my tire has the same markings. I still use the tire, its fine. :oops: :oops:
Bugger. I'm gonna change to the 16T front so might as well do a new chain at the same time. Shot.


Can anyone confirm how many links it should be? The manual doesn't seem to say.

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Re: Chain touching tyre???

Post by gotgoat » Sat Jun 29, 2013 7:55 am

I really couldn't tell u. this all happen on a long trip threw the states. had to find the nearest ktm dealer to fix it. So I could make it back home. :(
81gs750e, 76rd400,05wr250,96xr400.

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Re: Chain touching tyre???

Post by Roadhawg » Sat Jun 29, 2013 12:54 pm

Oh yeah. I went past a KTM dealer yesterday and while I was there I had a look at an SMT on the floor. The chain was tensioned like mine but seemed much beefier and didn't flex laterally, towards the tyre, as mine does.

So maybe it's just a crap chain. Says "tsubaki" on it.

Got a 16t sprocket while I was there. Should have asked them how many bloody links it should be!!!! DOH!

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Re: Chain touching tyre???

Post by matejs » Sun Jun 30, 2013 9:50 am

The chain have 112 links, 100%. BTDT

Also, you can count the links on your chain.
With a marker, mark one link and then count them all way around.

br

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Re: Chain touching tyre???

Post by Roadhawg » Sun Jun 30, 2013 10:35 am

matejs wrote:The chain have 112 links, 100%. BTDT

Also, you can count the links on your chain.
With a marker, mark one link and then count them all way around.

br
Ok Thanks. I would do that but I don't think this is the original chain (bike has done 34000kms) and i dont know if it is the right chain for the application. It seems to flex a lot, and washing the bike now, I've noticed that the chain has touched and scraped the top of the swing arm just by the chain cover bolt :(

Goddamn chain is giving me sleepless nights. I'm just going to go spend the earth on a DID 525 chain and make damn sure it's correct.

ARG!!!!

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Re: Chain touching tyre???

Post by budgesrsv » Sun Jun 30, 2013 11:29 am

I would fit a new chain and sprockets asap as there's obviously something badly wrong. Having been on the receiving end of a chain that jumped the sprocket and jammed the rear wheel I learned the hard way in my youth ! A painful lesson. An old rule of thumb was to hold a length of chain on its edge and if there was more than an inch of droop over a foot of chain it was shot. I wonder if someone has used solvent on the chain and destroyed the o- rings ?

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Re: Chain touching tyre???

Post by Roadhawg » Sun Jun 30, 2013 6:46 pm

budgesrsv wrote:I would fit a new chain and sprockets asap as there's obviously something badly wrong. Having been on the receiving end of a chain that jumped the sprocket and jammed the rear wheel I learned the hard way in my youth ! A painful lesson. An old rule of thumb was to hold a length of chain on its edge and if there was more than an inch of droop over a foot of chain it was shot. I wonder if someone has used solvent on the chain and destroyed the o- rings ?

Yep. Only had the bike a week...DO NOT want to bin it.....or myself.

525 DID VX Prostreet should do fine yeah? know the ZVMX would be stronger, but maybe overkill and a good R400 more money.

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Re: Chain touching tyre???

Post by adcolor » Mon Jul 01, 2013 3:40 am

NO to the 16 tooth front sprocket -- put a 43 or so on the rear instead. Per Kevtx: you will get less chain 'whip' and it will not hit the rubbing block on the swing arm.

That's another item you want to take a look at. I have no idea (yet) how worn these get. My Triumph had to be occasionally replaced. Another reason to keep the 17 tooth front: more chain in contact with more teeth in the front (as well as the rear) means less likely to get sections of stretched chain. It's a win-win.
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Re: Chain touching tyre???

Post by bobson » Sun Jul 14, 2013 11:53 pm

In me, like a chain rub on the tire.
In a place where it is bolted rear mudguard, got screwed roll of chain (58403060010)

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