Chain adjustment niggle

ibanezwizz · Sep 19, 2009

Bike on rear stand, I adjust roughly to be right then lock everything. Then I measure on bike stand and damn, chain goes tight. Instead of 25mm I get to 15mm. Also, when I lock axle bolt it seems left side of the wheel pulls for a 1mm rearwards tightening the chain although both screws on the adjuster are locked. Should I adjust with more slack factoring in tightening of chain after locking axle nut? Also it appears to be very sensitive on the adjustment. Chain is relatively new. Any tips?

pieman · Sep 19, 2009

do you push the wheel into the bike when you tighten? Have you tightened the chain on other bikes with no probs?

ibanezwizz · Sep 19, 2009

Yes, I do push the wheel all the way in and yes never had problems adjusting on my Honda. However, after further inspection I have observed that chain is slightly crooked at places, so not all that new as I was led to believe by previous owner. Looks new ok (make Regina) but it isn’t. I can see certain rings slightly bent as I look at it whilst turning the wheel. I lubricated the chain and best I can get is 25mm nearly all way round, but one area where it tightens to 20mm. Time for new chain I guess? Question, is it dangerous to ride like that or still ok for awhile?

mutts nuts · Sep 19, 2009

could be wrong here but i thought all chains had a tight spot and this is where you check your mesurment :dunno

Vince · Sep 19, 2009

I would change asap,I had a chain recently break on my Falco & destroyed the swingarm & broke the crank cases,as fas as measuring goes another way is have the bike on a paddock stand & put your weight on the back seat & check the chain then,the rear axel,swing arm pivot & front sprocket should be in line or there abouts ,this is the longest run for the chain so I put about 10mm slack in there,& when the bike is on the side stand it's about 25mm,it's handy doing it this way for any bike as you dont need the manufacturers recommendation, I also put a screwdriver in between the chain & rear sprocket,then spin the wheel & this takes up the slack & lock the wheel while keeping it in the forward position, & it doesn't damage anything. If there is a tight spot on any chain,I would say it's on it's way out,could be a dry link wearing or tightening

TarkMalbot · Sep 19, 2009

I have never had a chain without a tight spot of some degree. Not every link can be made the same but if it is causing the chain to jump of slap when hitting the sprocket then its a problem. Try spinning the wheel when its on the paddock stand and see how it passes overt the sprockets. I also find that most chains tighten when you nip the axle nut up. Having to do it about 3 times at least at each race meeting you start to learn how much extra slack will be taken up when you tighten everything up.

ibanezwizz · Sep 19, 2009

I was told by a friend with ducati that chain slaps a bit due to a twin if you look just behind the front sprocket area on the rubber runner? (He says I am not to expect 4 cylinder smooth running chain)? True or false... :eatcorn

Dolenc · Sep 19, 2009

True, also a good new chain is without tight spots. Try lubing that spot a bit extra and adjust it by this spot, its better to have a bit looser chain than to tight.

ibanezwizz · Sep 19, 2009

Dolenc said:
True, also a good new chain is without tight spots. Try lubing that spot a bit extra and adjust it by this spot, its better to have a bit looser chain than to tight.

Will you be at Grobnik 2morrow? :devious

Ps. Also I know smiley chain is a happy chain. :thumbup

Dolenc · Sep 19, 2009

Unfortunetly no, I have no more money for tyres

, so im done for this season.

Hope you fix you chain

Chain adjustment niggle

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