Playing with chain

[Dave321]

I followed the guide in here and the haynes manual everything was well layed out nice guide. I seemed to have done everything ok i got the wobble out of the wheel from yesterdays problems.

Silly me at first i was trying to line up the nuts i noticed i have to line up the metal plates both are spot on each side and the WHEEL does NOT wobble. How i checked i stuck it on the padock stand start bike rev a little in first gear let it spin looking at the wheel.

I looked over everything no chain or sprocket damage front and back all ok.

I don't know if i'm being paranoid but as the back wheel is spining on the padock stand i was watching the chain and it looked as if the rear sproket has a little wobble it's not major but there is still some minor shaking there. Now the rear sproket has been my main focus to see if the wheel alignment is spot on.

I looked to see if the sproket is bent with it just sitting on the thingy i looked if the nuts are lose all looks fine from here.

Am i being paranoid ? or is this normal?.


Dave321

[FirestormMike]

first off...

How i checked i stuck it on the padock stand start bike rev a little in first gear let it spin looking at the wheel.

Never ever do that ! It doesn't take a lot for the bike to come adrift.
secondly, are you looking at the chain running over the sprocket ? there will always be a tiny bit of side to side drift.
If all is nipped up tight and you spin the wheel, the sprocket should run true as although it's carrier sits in a rubber bush, it still runs on a bearing.

[Dave321]

Originally Posted by FirestormMike

first off...

Never ever do that ! It doesn't take a lot for the bike to come adrift.
secondly, are you looking at the chain running over the sprocket ? there will always be a tiny bit of side to side drift.
If all is nipped up tight and you spin the wheel, the sprocket should run true as although it's carrier sits in a rubber bush, it still runs on a bearing.

Thanks for the advice i never knew the bike could come off the stand it looked quite sturdy to me.

I was looking at the chain running over the sporcket as it span at this point i noticed the little wobble on the sprocket all is up nice and tight i left some play in the chain as i was told not to over tighten it.

All looks good then i still have that little drift on the rear spocket but as you said it's alright all is good and job done

Thanks

Dave321

[Spree]

Originally Posted by FirestormMike

first off...

Never ever do that ! It doesn't take a lot for the bike to come adrift.
secondly, are you looking at the chain running over the sprocket ? there will always be a tiny bit of side to side drift.
If all is nipped up tight and you spin the wheel, the sprocket should run true as although it's carrier sits in a rubber bush, it still runs on a bearing.

If the paddock stands have bobbins fitted then it should be ok. If it just picks up on the swingarm then it can slide off

[FirestormMike]

I wouldnt do it at all, bobbins or not. Ive seen a bike come off paddock stands when I worked in the bike shop. All it takes is for something to be slightly off balance (like a slack chain) and everything starts leaping about uncontrollably.
I've also had an 1100 Virago (brand new) miss me by inches falling from a hydraulic lift, just because the mechanic started it up. It landed completely upside down. Plus from a safety aspect, never ever work on a chain with the bike in gear and running. Daft as it sounds people do it, fingers get caught etc...clicky for the yucky pic
If I rev my bike when it's on its side stand, the engine torque moves the whole bike backwards, I'll youtube it sometime, quite scary.

[Spree]

I wouldnt do it at all, bobbins or not. Ive seen a bike come off paddock stands when I worked in the bike shop. All it takes is for something to be slightly off balance (like a slack chain) and everything starts leaping about uncontrollably.

About 50,000 professional racing garages would disagree with you there Mike, but I do understand the point your are trying to make.

The Firestorm wont budge with this setup btw

[FirestormMike]

Originally Posted by Spree

About 50,000 professional racing garages would disagree with you there Mike, but I do understand the point your are trying to make.

The Firestorm wont budge with this setup btw

50,000 racing garages wouldn't be so careless as to have a slack chain or a wheel out of balance. When I worked in the shop I was told under no circumstances should a bike be run in gear on any type of stand, including centrestands. You should be able to do maintenance turning the wheel by hand, anything requiring the motor running and in gear is pointless on a stand as the drivetrain isn't under load.
My firestorm deffo wouldnt budge as it had a vfr swingarm and the proper paddock stand that went with it, complete with a spindle sat in a bearing, but I still wouldn't do it, it's just not worth the risk. Incidentally, when I bought my harris stands for the SP, I'm sure they came with a warning sticker mentioning running bikes on stands. I'll have a look later and take a pic.

[Spree]

50,000 racing garages wouldn't be so careless as to have a slack chain

ALL racing bikes have what we would consider slack chains - the movement is massive compared to a road bike. I think I read somewhere that the Ducati has around 100 mm for the V4 and the V twin is even bigger.

Remember I am talking about having bobbins fitted.

[Dave321]

Just to add

I was giveing the chain a little clean this afternoon and spraying it with lube and i noticed something that the chain does not seem to have much play init so upon further inspection it would seem some parts of the chain are loose and the other parts really tight Is this normal? could it be that i overtightened the chain if the chain is overtightened could i damage anything or would it just work itself out?

Dave321

[druidsam]

Originally Posted by Dave321

Just to add

I was giveing the chain a little clean this afternoon and spraying it with lube and i noticed something that the chain does not seem to have much play init so upon further inspection it would seem some parts of the chain are loose and the other parts really tight Is this normal? could it be that i overtightened the chain if the chain is overtightened could i damage anything or would it just work itself out?

Dave321

the chain should have the slack set to suit the tight part , and over tight can cause premature wear



....................Sam