Another slack chain question

does anyone know why my chain keeps slackin randomly

Is your wheel moving forward in your dropouts? Have you tightened the nuts enough?

i thnnk its moving foward and i keep redoin the wheel i proberly should buy new nuts

wrong section
head over to mechanics & fixing people more likely to help out there

Have you tightened the nuts enough?

See for yourself

Loose nuts.

UTFS

You could run some chain tugs if new nuts doesn't work.

how exactly can the nuts not work?

Problem with arms, not nuts.

haha

oh, and they stretch!!

Warning: Arms stretch. Be careful tightening bolts, knuckle draggers.

Ha. Used to keep the kids amused for hours seconds with the old look one arm is longer than the other routine.

does anyone know why my chain keeps slackin randomly

its lazy

does anyone know why my chain keeps slackin randomly

Your chain has stretched.

That is the scientific answer.

Uh-huh.

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I was in the London Bike Workshop yesterday, just wanted to buy 2 bolts, ended up spending most of my lunch break disagreeing with the mechanic who in a nutshell, said chains do stretch. He had a chain stretch measuring tool, and told me that my chain was stretched. I argued Sheldon's side and after a lengthy debate, we concluded that we're both right. The pins wear and the chains do stretch.
Is this the end of the discussion now?

hippy, what is a chain-stretch measuring tool for by the way?

http://www.kronowit.com/bicycling/chainstretch.html

Bicycle chains don't actually stretch like a piece of leather. What actually happens is the holes that contain the chain's pins elongate over time (go from a circle to an oval) and the cumulative effect makes the chain longer in length.

hippy, what is a chain-stretch measuring tool for by the way?
http://www.kronowit.com/bicycling/chainstretch.html
Bicycle chains don't actually stretch like a piece of leather. What actually happens is the holes that contain the chain's pins elongate over time (go from a circle to an oval) and the cumulative effect makes the chain longer in length.

I guess it's a poorly named version of a Chain Wear Indicator tool:
http://www.parktool.com/products/detail.asp?cat=5&item=CC-3

Quoting from your own link: "Bicycle chains don't actually stretch"

It's similar to the case of alloy being a misuses term. Bike and bike components manufacturers regularly refer to components being alloy when they mean aluminum. This odes not mean all of a sudden that alloy means aluminum, it's just a common misuse of a word just as stretch is misused in the context of chains. Another example is quantum which is frequently used to mean a large leap forward when in fact a quantum is not that at all.

Chains do not stretch, however they are frequently refereed to have stretched though incorrect use of the word stretched away from that of a plastic deformation. Hippy is right.

they stretch

they fucking stretch, murtz.

Yes it was a similar tool. The mechanic at LBW took his time in repeating over and over that the metal physically stretches after he explained that he is studying physics.
He also pulled several 'stretched' chains out the bin, measured them and reiterated that pressure on metal will make it stretch. I may forward this link to him so he can defend himself.
But apparently, chains do stretch.

studying physics means nothing, this is engineering!

which is physics

this is man power over a thin piece of metal

sssttttrrrrreeeeeetttttcccccchhhhhhhhhhhhhhhh!!!