Knocking noise from somewhere - chain / front sprocket?

[Foxy Stoat seeks Pig]

Not sure if I can be any more vague but I have noticed a noise , normally when freewheeling down drive or manually moving when engine is off but there is a knocking noise come from around the front sprocket area, however, i don't think its the actual front sprocket itself, sounds more like what it feeds in to. The chain sort of clicks and jumps up and down ever so slightly but it does this in time with the click/knocking noise. Difficult to explain. Chain is lubed.

Has it up on centre stand earlier and moving the wheel by hand but It also happens when engine is running just not as noticeable because of the engine noise but obviously still there.

Appreciate any help - thanks.

[TimR]

Check chain adjustment

Check chain for damages broken/seized links

Check sprockets for hooked/broken teeth

Checksprocket is still attached

Check no foreign object is caught in casing ( small stone etc )

[goody]

are all the teeth on the the sprocket in tact and how loose is the chain ?

[Foxy Stoat seeks Pig]

Sprocket teeth looks ok . There is movement in the chain but I don't think too much. I haven't adjusted it since I bought it. Just over 1000 miles done.

Sprocket definitely still attached. I check this weekly after a previous breakdown.

[goody]

sounds like the chain poss knocking on the link pipe,try adjustment and see what happens

[Foxy Stoat seeks Pig]

Ok will try that once I find out how to adjust the chain. Not something I have done before but i need to know.

Would it be ok for a 15 mile commute to work tomorrow? Could take the car, don't really want to but will if needed

[goody]

1st check if the chain runs over the link pipe to rule pipe to rule that out but would deffo try adjustment any way,as for riding it that's your call but if your not sure leave it until you nail the prob

[onesea]

I have FZ6 S2 it did similar with old chain and sprockets by the time I changed them they where well shot.... Check your chain adjustment I have Scotoiler and have to do mine every 1000 miles or so...

If its FZ6 S2 its real easy to access front sprocket to have a look, 3 allan bolts...

[Foxy Stoat seeks Pig]

1st check if the chain runs over the link pipe to rule pipe to rule that out but would deffo try adjustment any way,as for riding it that's your call but if your not sure leave it until you nail the prob

 

Ok so first question - what/where is the link pipe?

[Foxy Stoat seeks Pig]

I have FZ6 S2 it did similar with old chain and sprockets by the time I changed them they where well shot.... Check your chain adjustment I have Scotoiler and have to do mine every 1000 miles or so...

If its FZ6 S2 its real easy to access front sprocket to have a look, 3 allan bolts...

 

Its a 2004 FZ6, I have checked the front sprocket and looks ok.

[Foxy Stoat seeks Pig]

Pic to front sprocket is in Post 36

https://themotorbikeforum.co.uk/viewtopic.php?f=5&t=61678&start=30

[MR_W]

Sounds like the chain is loose to me.

[onesea]

Well it looks in better condition than mine when I changed it

Trying to think if mine still has that click when I roll it back, I really cannot say... Certainly the tone of it did change when the chain was loose.

Front Cog

[goody]

The link pipe is the bit that connects your end can to the engine so if your can is on the right side then it won't be that if can on left side it's a poss,looking at that sprocket I,d change it and clean up all the gunk and shit from around it

[Stu]

you could have a stiff link in the chain

[Foxy Stoat seeks Pig]

The link pipe is the bit that connects your end can to the engine so if your can is on the right side then it won't be that if can on left side it's a poss,looking at that sprocket I,d change it and clean up all the gunk and shit from around it

 

Ah I see. the exhausts are under seat exhausts.

That pic was a couple of months ago when I had other problems. Its looks a lot cleaner now and all the oily crap has been cleaned.

[Foxy Stoat seeks Pig]

you could have a stiff link in the chain

 

the noise is a continuous clicking though which speeds up the faster I spin the wheel, could that be one stiff link?

[Foxy Stoat seeks Pig]

Just had another listen/look albeit not very well by torchlight but the noise definitely sounds around the inside the front sprocket area.

also there is some play in the chain, how loose should it be. I ran the wheel pulling the chain tight with my finger and the noise didn't change.

[Stu]

you could have a stiff link in the chain

 

the noise is a continuous clicking though which speeds up the faster I spin the wheel, could that be one stiff link?

 

Yeah

a stiff link can give a slight click/knock as the wheel turns and cause the chain to jump a little

the best way to check it to get it on a paddock stand or centre stand if it has one and slowly spin the wheel while watching the chain for any links that don't straighten back out as the chain comes around the sprocket

[Foxy Stoat seeks Pig]

This is the only link which looks different and stands out to me.

http://s800.photobucket.com/user/martash2009/media/IMG_20161218_192857519.jpg.html?sort=3&o=0

[Foxy Stoat seeks Pig]

I reckon there is a about 5cm of play in the chain, at its slackest point( next to the left foot peg) I can push it up far enough to touch the swing arm.

[Foxy Stoat seeks Pig]

you could have a stiff link in the chain

 

the noise is a continuous clicking though which speeds up the faster I spin the wheel, could that be one stiff link?

 

Yeah

a stiff link can give a slight click/knock as the wheel turns and cause the chain to jump a little

the best way to check it to get it on a paddock stand or centre stand if it has one and slowly spin the wheel while watching the chain for any links that don't straighten back out as the chain comes around the sprocket

 

Ah I can see the chain jump a little, not a lot but it's there. will try that tomorrow after work. am I checking the chain as it comes around the front sprocket?

also how do you fix a stiff link?

[Foxy Stoat seeks Pig]

found a youtube link .

this is exactly the noise im getting. same circumstances eg. on centre stand moving wheel by hand.

Edited December 18, 2016 by Foxy Stoat seeks Pig

[Tango]

That link in the picture is the joining link......It looks like it's been riveted too much, which is stopping it from moving freely......and that'll definitely be what your problem is......

The only real answer is to remove that link and see if you can get another one and try fitting it again, but not so tight......

[Stu]

you can check it around either the front or the rear

Ideally you need a chain tool to move the pin on the link back and forth although depending on the age and condition of the chain it may need to be replaced