Chain too tight when I sit on the bike

[Az]

When I'm off the bike the chain has good amount of play in & then when I sit on the bike the chain gets extremely tight, as in no play what so ever.

Checked with two friends' bikes, and their chains get no were near as tight when there sat on their bike and their chains have similar tension to mine when off the bike.

C&S have plenty of life. My chains only ever needed adjusting 2 times in the 8 months it's been on, it's fairly well looked after too.

What could cause my chain to go super tighter when weight is on the bike in comparison to when there's no weight on the bike? (I know the chain tightens up when you sit on it, but it shouldn't be getting this tight)

Any ideas? As I don't want to be riding a chain that's stupidly tight for the obvious reasons. Will take a video tomorrow as that'll give you all a much better insight to my problem.

[Raffles]

[lihp]

Loosen the chain then?
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[Az]

[CaNsA]

Inb4 tightspots.

[Kickstart]

Hi

My 1200 is a pain for the chain getting a LOT tighter when you do the wheel spindle up properly (ie, you adjust the chain, get the tension right and then tighten the spindle up and most of the free play disappears).

As such check the tension is right . Sitting on the bike will tension the chain a touch, but that is why there needs to be some slack there.

But Cansa could well be right on the tight spots as well

All the best

K
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[doggone]

Suspension geometry changes the distance between sprockets as it goes down - always best to check it's not too tight by lying over the seat if a second fat person is not available to sit on it while you check.

[Polarbear]

You should check the chain when sat on the bike. Most people don't because its obviously easier on the center or paddock stand and to be honest, I haven't found it make a huge difference which ever way you do it so I'd be a bit worried about your method.
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[Rogerborg]

[Taught2BCauti...]

It's all about the Angle of the Dangle.

Chain adjustment should be done when the centre of the front sprocket and the centre of the rear sprocket, is on the same line as the centre of the swing arm.
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[Pete.]

[john24ssj]

This video should explain it pretty well: https://www.youtube.com/watch?v=z_CyM-Ed8PA
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Bikes: Honda CBR600Fi, Kawasaki ER5

[Kickstart]

Hi

Few if any bikes that I know of specify that the chain should be adjusted under load. The amount of slack specified does vary which should cope with the changes in how much the chain tension changes as the suspension compresses.

All the best

K
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Az]

[Az]

All done-dided, off to Matlock I go

[Rogerborg]

for diddley done.

Also +1 on the spindle making a surprising amount of difference. There's essentially no point in my measuring the slack on my GS unless it's done up tight.
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[Vincent]

[iooi]

[klx678]

[CaNsA]

[Vincent]

[Sload]

[andys675]

if the chain is too tight sat on the bike, stand on the pegs instead
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[UrbanRacer]

Lose weight you fat fucking cunt

[lihp]