chain stretch....

milkman
Senior Member

Posts: 967

chain stretch.... Dec 17, 2006 23:58:15 GMT -5

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Post by milkman on Dec 17, 2006 23:58:15 GMT -5

Well, I just got back from riding my sr250 for a 640km round trip, Sydney to Canowindra and back.

I tensiones my chain before I went, lubed it up etc etc, seemed to fine however I was stuck in constant damp and drizzle for an hour or so, then still had 250kms to go, when it became hot and dusty.

Now when I wnet to ride my bike this morning she is SAGGING (i noticed when I turned right and heard it slapping!!!!)

Now I always look after my chains, but 600 kms at near 6000rpm has us in disagree-ance.

any suggestions on why the wear may have been excesive, or is that in fact normal? I had the chain correct before I left, its done 2000km since I've had it, with some 200km higher rev jaunt thrown in with little to no stretch.

The bike in total is only 8000km old, so the original chain and spockets are what is on the bike (i assume, haven't checked) Did I just give it too much over the weekend?

I'm also interested to heaer if some of you motorcrossers or lower capacity boys have used some of these supposed "low drag" chains, and if you can reccomend/condemn any particular brand etc.

i generally stay with OEM sprock and chain, and have to say I was really surpirsed when I got off my bike at work this morning because I'm quite paranoid about chains.

what do you think?

fenz
Senior Member

Thump on

Posts: 405

chain stretch.... Dec 18, 2006 0:22:19 GMT -5

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Post by fenz on Dec 18, 2006 0:22:19 GMT -5

Most of the new mx bikes are fitted with very light duty chains,they do this for less drag and less weight.
My yzf426 was fitted with such chain and it did stretch very easily(power out put would be a fair bit higher than a 250)Replaced it wit a D.I.D XRing chain and only adjust it every 3 or 4 months.
This sees regular use in harsh sand conditions and seems to wear extremely well.

Ride it like you stole it.

milkman Senior Member Posts: 967	chain stretch.... Dec 18, 2006 4:43:49 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by milkman on Dec 18, 2006 4:43:49 GMT -5 Thats what I was thinkig Fenz, from what I've read everywhere. Still don't know why this stretched so bad, but I might get rid of it anyway. Don't wanted it jamming when I'm in the three lane stuff.

colinjay
Senior Member

Posts: 520

chain stretch.... Dec 18, 2006 22:37:52 GMT -5

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Post by colinjay on Dec 18, 2006 22:37:52 GMT -5

Chains are a topic like oil, almost everone will have differing opinions.

I normally use non O'ring DID chains on my SR's. Every time I service the bike (about every 3000km), I remove the chain, clean it in my parts washer (in kerosene) and once clean and dry, "boil" it in a can of Duckham's chain grease (had if for 20 years so I don't know if you can still buy the stuff).
I also run a SCOTT oiler on my STD SR that I ride to work almost daily, and between services I may adjust the chain once! Also, I live on a dirt road, my house being about 1km from the nearest tarred road, so the chain gets very dirty. I will admit that I am quite slack on cleaning the bike, and generally give the whole bike including the chain a spray with degreaser and wash it down with a high pressure water cleaner every month or so. This treatment isn't the best for the chain but I still get a reasonable life from them, of about 6000 - 8000km.

CJ

Is 37 motorcycles too many??[br]Obviously Not! As the collection is back up to 40 bikes! Make that 42, I picked up another 2 wrecks while I was in the Hill on the weekend!

milkman
Senior Member

Posts: 967

chain stretch.... Dec 18, 2006 23:43:34 GMT -5

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Post by milkman on Dec 18, 2006 23:43:34 GMT -5

thanks Colin
At 8000km, this chain might be crying enough. I don't think its an O-ringer, and I can't vouch for the first 5000km, but judging by the fact the owner seems to have let the rims and original bars etc start to rust (its an 04 model) quite a bit already, I'd say their maintentance was a little off.

well today I scrubbed the chain near clean while on the bike, adjusted her up and lightly oiled her with my motor oil. Gonna go this route more often instead of the sticky chain lube now. All I seemed to be doing was lubing over the crud I caught on the last lube.

Post by milkman on Dec 17, 2006 23:58:15 GMT -5

Post by fenz on Dec 18, 2006 0:22:19 GMT -5

Post by milkman on Dec 18, 2006 4:43:49 GMT -5

Post by colinjay on Dec 18, 2006 22:37:52 GMT -5

Post by milkman on Dec 18, 2006 23:43:34 GMT -5