Chain tension...??

Jleosnow · May 23, 2020

Hello all,
Is it just me, or do others find it impossible to achieve the recommended chain tension/slack? The manual calls for 50mm-52mm(basically 2”) but it hits the bottom of the swing arm well before the 2” slack is achieved.

Input?

Thanks,
-John

Khmer1199 · May 24, 2020

It's just you. Seriously... I've never experienced any issues adjusting the chain, and 50-52mm is the correct figure. The distance is measured midway between the front and rear sprockets. Are you measuring from the correct point?

thomasmryan · May 24, 2020

I took 4mm of slack out of the v2 yesterday following the procedure in the owners manual.

if you don't have the manual, the swingarm has a sticker to show where and how to take the measurement. on the v2, flop the chain and measure from a point in front of the plastic guide mounting screw to the metal of the swing arm to the center of the chain rivet. (45-47mm of 'sag' on that model)

Jleosnow · May 24, 2020

Khmer1199 said:
It's just you. Seriously... I've never experienced any issues adjusting the chain, and 50-52mm is the correct figure. The distance is measured midway between the front and rear sprockets. Are you measuring from the correct point?

Thanks for the reply Khmer. Just checked again(midway between both sprockets) and the chain touches the bottom of the swing-arm well before 50mm of travel/deflection.

-John

Khmer1199 · May 24, 2020

Jleosnow said:
Thanks for the reply Khmer. Just checked again(midway between both sprockets) and the chain touches the bottom of the swing-arm well before 50mm of travel/deflection.

-John

I can't understand it... are you the original owner? If not, what did the previous owner change? Was the rear suspension altered, the chain, the position of the eccentric hub, etc.? In stock trim you shouldn't have any difficulty adjusting the chain tension to spec.

DucatiKev · May 24, 2020

Yeah I was going to say it’s time to by one of these from cycler

cmh210 · May 24, 2020

I don't understand your problem either. You should be pushing down on the bottom run of the chain. Hold it in that position. Measure from the bottom of the swingarm.

Jleosnow · May 24, 2020

Khmer1199 said:
It's just you. Seriously... I've never experienced any issues adjusting the chain, and 50-52mm is the correct figure. The distance is measured midway between the front and rear sprockets. Are you measuring from the correct point?

Crap, it is just me(after reading cmh210’s reply).... I was thinking that I was supposed to be measuring 50mm-52mm of up & down deflection(like on most normal swing-arm bikes), not simply 50mm-52mm of slack/gap from the bottom of of the swing-arm to the lower link rivet(s) on the chain. Classic overthinking maneuve!

Thanks,
-John

Khmer1199 · May 24, 2020

Jleosnow said:
Crap, it is just me(after reading cmh210’s reply).... I was thinking that I was supposed to be measuring 50mm-52mm of up & down deflection(like on most normal swing-arm bikes), not simply 50mm-52mm of slack/gap from the bottom of of the swing-arm to the lower link rivet(s) on the chain. Classic overthinking maneuve!

Thanks,
-John

Great! ...then you're straight.

cmh210 · May 25, 2020

Glad we could help. It is different from most other bikes.

jjsC6 · Jun 12, 2020

Just to give the OP some support, I have had my bike for over seven years and have had the same issue. My mechanic, who is very well respected, has told me that if it’s touching the swing arm it’s fine. Even after he adjusts it, it looks too slack. But it wears well and never had problems. It doesn’t help that the owners manual is not clear. And the owners manual has other blatant mistakes in it!

Chain tension...??

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