Chain strech

Mini Stalk · Renault 5 Driver Joined: 23 Dec 2010 Karma :

Hi guys, my chain keeps stretching like mad. it is well lubicated and my allighment and bushes are fine. why is this happerning?

Thanks Dave

nowhere.elysium · The Pork Lord Joined: 02 Mar 2009 Karma :

Is it a cheap chain? Are you setting it too tight initially?
It'd also be handy to know what the bike in question is, too.
____________________
'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project

..... · Quote Me Happy Joined: 15 Jan 2005 Karma :

It's probably at the end of its life and needs replacing as soon as possible.

Paxovasa · World Chat Champion Joined: 25 Apr 2010 Karma :

It could be a combination of you been overly aggresive with your right wrist and a cheap chain/sprocket set.
____________________
Suzuki GSF600 K3 (in the fastest colour, black).

0l0dom0l0 · World Chat Champion Joined: 21 Oct 2009 Karma :

+1 to all the above.

How many miles has it done?

What make is it?

Mini Stalk · Renault 5 Driver Joined: 23 Dec 2010 Karma :

its a did chain and sprockeys had it on for about 1000 miles. and its only a little 125

..... · Quote Me Happy Joined: 15 Jan 2005 Karma :

Are you sure that you're setting the tension correctly as per the book and not setting it too tight?

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

there must be some up and down slack usally about 25-50mm overall on freeplay from centre of chain

Some people really do, do them up dead tight that you can't turn the wheel! Shocked

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

Sounds like a cheap chain. The worst I've seen are called 'Heavy Duty'. Fit a grade 5 chain and keep it lubed and it will last a long long time.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

Yeah the brand. Nothing could be further from the truth.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy

CaNsA · Super Spammer Joined: 02 Jan 2008 Karma :

What bike is it dude?

I had trouble with the CLR125 a few years ago.
I would adjust the chain so that it was spot on, not to tight not to slack.
Sit on the bike and the chain would be waaaaay to tight.

Get the back wheel off the ground, spin the wheel slowly and watch the bottom chain from the side of the bike.

See if the chain moves up and down, this will indicate a buggered chain.

If you need to keep using then spin the wheel so that the chain is at its highest point, as this is when it is at its tightest, then set the required amount of slack.

Dont forget about move the chain will tighten up when you sit on the bike.

Does that make sense?

hth
CaNsA

Devans · Spanner Monkey Joined: 14 May 2008 Karma :

Check that the wheel isn't slipping forward, had the issue on my 125cc. Makes you think your chain is constantly stretching but really the wheel is slipping forward Razz

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

I had this on my GS, luckily it blew up I never did get to the bottom of the issue Laughing

I reckon it was a cheap chain though.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

some bikes are specific to whether its suppose to be adjusted on the ground or with the rear wheel in the air

andys675 · World Chat Champion Joined: 08 Feb 2007 Karma :

have a look at the side plates, should be stamped with a H at the end of the number if heavy duty 420H or 428H etc, if you're bike should have a H grade chain on as standard and doesn't have one even a decent make like DID will wear out quickly if its only a standard chain fitted