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new chain

Posted:
Wed Oct 18, 2006 11:50 pm
by Adel
can some help me please? I went to a bike shop today and got a new
chain put on my zxr 750 and when I took the bike for a run It starts to
get really noisey when I reach 60 k, and seems like something is holding
it from opening up slity is that normal for a new chain to do that, I did
notice the machanic put some of that white grease they put on chains,
could it be he might' ve tensioned the chain to much ? I wouldn't know guys what should the tension be
cheers fellas

Posted:
Thu Oct 19, 2006 7:26 am
by MadKaw
The chain should move up and down about 25 to 30mm on the lower side of the chain.
Also check the rear wheel alignment via the lines on the rear axle washer...

Posted:
Thu Oct 19, 2006 7:27 am
by BladeBoy
Did the mechanic replace the sprockets as well?, the chain should have about an inch movement up and down at the centre of the chain with the bike on the side stand, good luck..

Posted:
Thu Oct 19, 2006 8:48 am
by Adel
I gather from your reply the noise isnt normal, well the machanic said the
sprokets look ok don't need chainging and you guys are spot on, the
chain is about an inch u n d movement, alignment also looks ok, could it be
that not enough lube on the chain?
cheers for the reply

Posted:
Thu Oct 19, 2006 9:24 am
by hoffy
its hard to say, but it may just need a little wearing in ?

Posted:
Thu Oct 19, 2006 9:51 am
by javaman
I would suspect the grooves of the sprockets does not match the chain due to wear ? Try loosen up the tension to see if it gets better.
It is generally a good idea to change sprockets and chain at the same time.

Posted:
Thu Oct 19, 2006 10:57 am
by BikerBoy
I'd definitely recomment changing your sprockets when you change your chain.
The chain is much more expensive than the sprockets, so its not that expensive to do both at the same time.
I'd say thats where you problems are arising, running a new chain with semi-worn out teeth on your sprockets.
I'd try ensuring the tension is right like the guys above suggested and take it for a couple of long rides. This may help by wearing in your chain. If the problem doesn't go away, take it back and replace your sprockets too.

Posted:
Thu Oct 19, 2006 11:51 am
by MickLC
I agree...not changing your sprockets when doing a chain is false economy

Posted:
Thu Oct 19, 2006 12:17 pm
by BladeBoy
BikerBoy wrote:I'd definitely recomment changing your sprockets when you change your chain.
The chain is much more expensive than the sprockets, so its not that expensive to do both at the same time.
I'd say thats where you problems are arising, running a new chain with semi-worn out teeth on your sprockets.
I'd try ensuring the tension is right like the guys above suggested and take it for a couple of long rides. This may help by wearing in your chain. If the problem doesn't go away, take it back and replace your sprockets too.
That is if the old sprockets have not already damaged the new chain

Posted:
Thu Oct 19, 2006 1:00 pm
by Adel
thanks for replies I don't know much about machanicals on bikes so when machanic said you don't need to change sprokets I said you know best paid and left, if prob continues I def change the sprokets
thanks again

Posted:
Thu Oct 19, 2006 7:29 pm
by thatp1g
not 100 % happy, take it back to the shop.
You might feel a bit silly if it is nothing to worry about.
You might save yourself a bunch of money and some skin if it is something serious that they have fucked up.
Either way, up to you. But I would have it back to the shop.
If your sprockets are worn enough to make a bunch of noise then they are gonna kill your new chain in no time.

Posted:
Sat Oct 21, 2006 1:17 am
by Adel
You talkd me into it, I made an appointment for bike on monday,changin the sprokets

Posted:
Tue Oct 24, 2006 11:05 pm
by Adel
well I got sprokets replaced, and thanks to you fellas most of the noise is gone, its much better now
cheers
adel