Ride height and eccentric rear hub adjuster

[28hodge]

Am I right in thinking that the position of the hub adjuster will have a bearing on the rear ride height?

If the adjuster is in its lowest position ie spun round so the axle is at the bottom of the hub carrier in the swingarm the ride height will be a lot higher than when the adjuster is spun round so that the axle is at the top of the hub carrier??

For a race bike where do i want the adjuster to be situated? and how much slack should my chain have, is there a rule of thumb, i know that Haynes says there is a sticker on the swingarm, but mine has no sticker.

On an mx bike for instance with both wheels on the deck you shoulb be able to get 2 fingers between the back of the front chain slider and the underside of the chain, if you cant the chain is too tight, if you can with room to spare then the chain is too slack and you adjust accordingly.

Any similar "quick" check for a NC30??

Thanks

[28hodge]

think i have answered this to an extent using search.

there is only so far the adjuster can be rotated yeah so the ride height is only effected a little, there is a mark on the swingarm that the sprocket should not move past when the hub is adjusted to take up slack, am i right in thinking this?

[vfrman]

Yes. That mark shows you when to replace the chain, but only if you have the stock gearing.

[28hodge]

thats the main problem to be honest, that mark is a stuck on pressed metal plate i think?

my bike is lacking this plate/sticker, which is a bit of a pain!!

In theory though, the hub should only be adjusted between the 8 0'clock & 4 o'clock positions, so is going to have minimal effect on ride height.

As i dont have that sticker i was looking for another way to assess the tension in the chain like the finger gap method that i use on my mx bike mentioned above.

[Drunkn Munky]

The sticker isnt to assess the tension in the chain its to tell you when the chain needs replacing. Ive never measured the tension in my chain i just use common sense.

[28hodge]

Ok fair point, but my common sense comes from mx where the bike has a hell of a lot more travel and therefore the chain runs i would imagine slacker at rest that a road bike should.

all im looking for really is a rough measurement of how far i should be able to lift the chain away from the slider on the top of the swingarm. if not i'll go for common sense and just have it tight but not ridiculously tight.

[Drunkn Munky]

Go for about a inch each way taken from towards the front of the swingarm.

[28hodge]

Thats great thanks