Adjusting the top chain span

[awa355]

I have just read an article on the "thumpertalk.com' website. The writer advocates adjusting the chain slack on the top span. It is a Yamaha 450, he refers to.

Is this a common way of adjusting off road chains? Does anyone adjust their road bike chains using the top run? I have never seen any owners manual showing the freeplay set on the top,

In a sense, I can see some logic in this, as the top of the chain is the length being loaded with the engine power.

[White trash]

I have just read an article on the "thumpertalk.com' website. The writer advocates adjusting the chain slack on the top span. It is a Yamaha 450, he refers to.

Is this a common way of adjusting off road chains? Does anyone adjust their road bike chains using the top run? I have never seen any owners manual showing the freeplay set on the top,

In a sense, I can see some logic in this, as the top of the chain is the length being loaded with the engine power.


Ummmmmmmm, if you adjust the top span slack, it just goes tight the moment any torque is applied to it, and thereby further slackening the bottom span.

[98tls]

Cant say i have,nor thought about doing so.

[bogan]

perhaps the top slider lifts the chain a bit when suspension is uncompressed, making adjustment less accurate from the bottom, adjusting from the top means the chain isn't on the slider? or maybe it rests on the bottom roller when slack, making it difficult to get accurate when adjusting from the bottom?

[Max Preload]

There's no benefit and it's a lot more difficult on a road bike given top of the chain is usually covered by the guard. The visually measurable difference is negligible. Access isn't as good.

[F5 Dave]

many dirtbikes have spring loaded tensioner rollers on the bottom, just pull them back & check.