chain came off while riding?

29104 Views 59 Replies 24 Participants Last post by aj26, Jul 26, 2010

xotoby

Discussion Starter · Jun 7, 2010

so en route to work this morning, was already late as it stood.
taking a slow turn onto grt western hwy in peak hour

, and mid turn (whilst turning) I hear a clank and clutter, a big jerk which almost topped the bike over and then the bike just wouldnt go, would just rev and clatter sound coming from below.

so rolled to a stop, pushed to driveway and found chain hanging, off the rear sprocket..

what can cause this?

it being too loose? it not being oiled enough? it being oiled too much?
changing gears while turning? (which I was and don't know if that's a no no?).

anyways...
helps? :huh:

1 - 20 of 60 Posts

Blackness

· #2 · Jun 7, 2010

Would have been too loose mate. Possibly an old chain that had stretched also.

Either way id be grabbing a new RK chain, lube her up and tighten up until you get to the right amount of slack.

Drew

· #3 · Jun 7, 2010

Oh wow, I assume you don't know how to adjust a chain... this should be totally impossible.

banana.logic

· #4 · Jun 7, 2010

would have had to have been pretty loose to come off right... have you been playing around with your rear wheel lately? was the axle loose or something?

xotoby

Discussion Starter · #5 · Jun 7, 2010

banana.logic said:
would have had to have been pretty loose to come off right... have you been playing around with your rear wheel lately? was the axle loose or something?

i buyed the bike and then rided the bike. lol.

Na, I haven't done anything at all. put castrol chain oil on it and umm, thats about it..
I washed it yesterday? soaped it urrp good. is there things you shouldn't wash? (i didnt clean chain with soap but it would've got wet...)..

i could put the chain back on with a little bit of force to stretch it over the teeth again.. should it be relatively easy to put back on? or does that mean it is stretched?

banana.logic

· #6 · Jun 7, 2010

yeah it shouldn't be that easy to put back on. do you know how to adjust your chain tension? if so how far out are the adjusters wound out?

xotoby

Discussion Starter · #7 · Jun 7, 2010

banana.logic said:
yeah it shouldn't be that easy to put back on. do you know how to adjust your chain tension? if so how far out are the adjusters wound out?

i do not.
i will have a quick look at the chain now to see if I can see.. an. adjuster?

banana.logic

· #8 · Jun 7, 2010

I'm off to make some dinner, but there is definitely someone else here who can help you.

CBR_RR

· #9 · Jun 7, 2010

poking out of the end of your swingarm on both sides if you have a MC 22.

un screw and then re align them with the marks, get both sides the same.

If you have an MC 19, sorry, no idea

xotoby

Discussion Starter · #10 · Jun 7, 2010

CBR_RR said:
poking out of the end of your swingarm on both sides if you have a MC 22.

un screw and then re align them with the marks, get both sides the same.

If you have an MC 19, sorry, no idea

yeah mc22. found em.
they seem to be poking out at exactly the same angle as each other. and that angle seems to be perfectly in-line with the angle of the end of the 'swingarm'. too.

if i tug on the chain from the bottom end of the rear sprocket, the chain lifts a good few mm completely off, after the teeth.
im assuming that is too loose.

is what you said, adjusting those things sticking out, the way to tighten your chain? as They SEEM to be in order from what I can judge.

Blackness

· #11 · Jun 7, 2010

As above, If you have someone to help you get them to hold the bike and sit down behind the bike, have the rear axel loose so the tyre can move freely back and forth. Then at the back of the swingarm there are these litle screws coming out and they are the adjusters. Try do the same turns both side and watch the tyre and check the slack of the chain constantly. You want about 2-3 fingers slack on the chain. Tighten the axel back up lol

dayeve

· #12 · Jun 7, 2010

xotoby said:
so en route to work this morning, was already late as it stood.
taking a slow turn onto grt western hwy in peak hour , and mid turn (whilst turning) I hear a clank and clutter, a big jerk which almost topped the bike over and then the bike just wouldnt go, would just rev and clatter sound coming from below.

so rolled to a stop, pushed to driveway and found chain hanging, off the rear sprocket..

what can cause this?

it being too loose? it not being oiled enough? it being oiled too much?
changing gears while turning? (which I was and don't know if that's a no no?).

anyways...
helps? :huh:

OMG

xotoby

Discussion Starter · #13 · Jun 7, 2010

Blackness said:
As above, If you have someone to help you get them to hold the bike and sit down behind the bike, have the rear axel loose so the tyre can move freely back and forth. Then at the back of the swingarm there are these litle screws coming out and they are the adjusters. Try do the same turns both side and watch the tyre and check the slack of the chain constantly. You want about 2-3 fingers slack on the chain. Tighten the axel back up lol

how do I achieve getting the 'rear axel loose?'.. would I not need a rear stand for that?

I see what you're saying though. unscrew em and screw em back in, both the same amount of turns. until its tight.
2-3 fingers slack on the chain? where do I measure this.

what kinda damage can I cause by riding it as is until the weekend..
its for work. its dark and I've no one to help haha.

ajpennypacker

· #14 · Jun 7, 2010

Shite dude. Deffo too loose...

Chain tensioners are located at the back of the swing arm.
Loosen of the axel nut so the back wheel is free to move forward and backward in relation to the bike.
Once the nut is loose, you'll need to raise the back wheel off of the ground to allow you to accurately adjust the chain tension.
Once the chain has the correct tension and the wheel is inline with the bike, IE not twisted to one side, then crank the axel nut up tight and lock off the chain adjuster nuts.
Its probably easiest to adjust each tensioner nut a quater-turn at a time.

While the chains off/ Being adjusted, can I suggest you clean the chain/sprockets if you bought the bike and rode it straight off.

xotoby

Discussion Starter · #15 · Jun 7, 2010

dayeve said:
OMG

wtfbbq....

ajpennypacker

· #16 · Jun 7, 2010

what kinda damage can I cause by riding it as is until the weekend..
its for work. its dark and I've no one to help haha.

Worst thing that could happen... Chain comes off and jams, locking the rear wheel causing you too stack... IE could be VERY dangerous...
Wear to the chain and sprockets...
Wouldn't risk it mate

xotoby

Discussion Starter · #17 · Jun 7, 2010

ajpennypacker said:
Shite dude. Deffo too loose...

Chain tensioners are located at the back of the swing arm.
Loosen of the axel nut so the back wheel is free to move forward and backward in relation to the bike.
Once the nut is loose, you'll need to raise the back wheel off of the ground to allow you to accurately adjust the chain tension.
Once the chain has the correct tension and the wheel is inline with the bike, IE not twisted to one side, then crank the axel nut up tight and lock off the chain adjuster nuts.
Its probably easiest to adjust each tensioner nut a quater-turn at a time.

While the chains off/ Being adjusted, can I suggest you clean the chain/sprockets if you bought the bike and rode it straight off.

ah, very well then my good sir.

thanks all for le replies.

a rear stand is in order to be purchased!
or someone really really strong :dodgy:

ajpennypacker

· #18 · Jun 7, 2010

^^ See my post above that

Edit: or delete that post Lol

xotoby

Discussion Starter · #19 · Jun 7, 2010

ajpennypacker said:
what kinda damage can I cause by riding it as is until the weekend..
its for work. its dark and I've no one to help haha.

Click to expand...

Worst thing that could happen... Chain comes off and jams, locking the rear wheel causing you too stack... IE could be VERY dangerous...
Wear to the chain and sprockets...
Wouldn't risk it mate

:s but I don't wanna stack..
road make hurty

i wonder if anyone local would lend a stand thingy..
(st marys/erskine park). or if anyone knows any shops round here that sell em CHEEEAP.

mewnz

· #20 · Jun 7, 2010

Just put the bike on the stand and get your shoulder in under the tail to lift the rear wheel buddy. Don't have to be a powerlifter.

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