Different size locking nuts

Chunkers1980

wow, yes, did you read that on Parktools?

cooldad

Generally, on a hardtail, I would just add one link.

drlodge

I would fit the chain on small-small to be as long as possible with some tension in the rear dearilleur, then check on big-big.

Chunkers1980

That's not a good way. If your mech is boaderline over on capacity then it can rip it off, hence why advice is always the other way around.

drlodge

Chunkers1980 wrote:

That's not a good way. If your mech is boaderline over on capacity then it can rip it off, hence why advice is always the other way around.

Can you explain whaty you mean by "boaderline over on capacity"? I don't see how the chain can be "ripped off" if setup like this on small-small:

Chunkers1980

There's only so much slack in a chain. Say you have a 40 big sprocket on the rear and 50t up front (unlikely I know, but for illustration) so likely 29t difference in the rear and similar on the front. This would mean that from little-little to big-big the mech needs to cope with 50+t difference which none can afaik. Hence why big-big means this is factored in and if the mech wasn't upto the required capacity then it would just be slack in the smaller cogs rather than taught and ripping the mech off and causing mayhem with everything else. Extreme I know - but that's why big-big.

drlodge

Chunkers1980 wrote:

There's only so much slack in a chain. Say you have a 40 big sprocket on the rear and 50t up front (unlikely I know, but for illustration) so likely 29t difference in the rear and similar on the front. This would mean that from little-little to big-big the mech needs to cope with 50+t difference which none can afaik. Hence why big-big means this is factored in and if the mech wasn't upto the required capacity then it would just be slack in the smaller cogs rather than taught and ripping the mech off and causing mayhem with everything else. Extreme I know - but that's why big-big.

OK, I assumed the rear derailleur has enough capacity :roll: But with rubez, I should learn not to make such assumptions

rubez

drlodge wrote:

OK, I assumed the rear derailleur has enough capacity :roll: But with rubez, I should learn not to make such assumptions

Eh... if it weren't for me you'd be fitting your chains incorrectly.

School's out.

cooldad

You invented the right way to size a chain.
Whodathunkit?

rubez

Just checked my chain on big-big, and it has 4 extra links.

Considering it should only be one extra link on a hard tail, may this have been causing some of the problems... i.e. chain wonkiness?

Chunkers1980

What's chain wonkiness?

rubez

Does anyone have any input?

Also, what happens if your perfect chain length happens to be two same bits - that the pin can't go through?

felix.london

rubez wrote:

what happens if your perfect chain length happens to be two same bits - that the pin can't go through?

seriously....?

rubez

No, I like wasting my time as much as you do...

Chunkers1980

Glad you're not serious.

felix.london

rubez wrote:

No, I like wasting my time as much as you do...

Seriously....read f.ing Parktools!!!!

rubez

Done.

Without parktools.

cooldad

You welded them together?