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Old August 2nd, 2015, 07:12 PM   #1
mcwidave
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Adjusting chain.

Hello again to everyone, I am in need of more advice. I'm attempting to tighten up my chain because it's pretty loose and I feel comfortable with the process, HOWEVER, I do not have access to a torque wrench tonight and really don't want to miss any possible riding time tomorrow. Is there any way to be able to pull off tightening the chain WITHOUT a torque wrench? Any advice or input on the matter is greatly appreciated!
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Old August 2nd, 2015, 07:56 PM   #2
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Yes. How much do you weigh (fully dressed to work on the bike)?
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Old August 2nd, 2015, 07:58 PM   #3
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Quote:
Originally Posted by mcwidave View Post
Hello again to everyone, I am in need of more advice. I'm attempting to tighten up my chain because it's pretty loose and I feel comfortable with the process, HOWEVER, I do not have access to a torque wrench tonight and really don't want to miss any possible riding time tomorrow. Is there any way to be able to pull off tightening the chain WITHOUT a torque wrench? Any advice or input on the matter is greatly appreciated!
The recommended torque for the rear axle nut is 81.1 ft-lbs.

The pressing force of that nut is the only thing that prevents the axle from shifting during acceleration and braking; the tensioners are only for positioning the axle.

That means that those 81 lbs applied to one foot lever are important.
You can adjust the force to the actual lever that you have.
That lever is measured from the center of the axis to the center of your hand or middle finger.

For example, if the actual distance is 10", then the minimum required force is

81.1 lb x (12" / 10") = 97.3 lb

Pressing on a bathroom or fishing scale can give you an idea of how that much force feels to your hand.

Links of reference:
http://faq.ninja250.org/torque/ex250f/

http://faq.ninja250.org/wiki/How_do_...l_alignment%3F
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Old August 2nd, 2015, 08:10 PM   #4
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Old August 2nd, 2015, 08:21 PM   #5
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How-to video - http://canyonchasers.com/video/howto/chain.php
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Old August 2nd, 2015, 09:16 PM   #6
mcwidave
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Thanks everyone! I got it adjusted (with a 12" wrench I applied about 80 lbs of force) I then took it for a low speed ride and checked everything when I returned. All appears fine for now. I will be getting a torque wrench in the next couple days to confirm the actual torque but I think it went pretty smoothly.

P.s. Why do I feel as though we have discussed this before @Ghostt???
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Old August 2nd, 2015, 09:39 PM   #7
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Ya done good, Dave!
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Old August 2nd, 2015, 10:01 PM   #8
mcwidave
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Well thank you.....Dave... Haha. I gotta say I'm feeling more and more accomplished with every little task I complete on the bike. Plus it's given me a greater appreciation of it. If I upgrade I don't think I could ever let this little beauty go.
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