On 01 May 2004 21:20:12 GMT, l8ndeb.DeleteThis@aol.com (L8N DEB) wrote:
>I just finished installing a rear tire and new chain. The only way I know how
>to align the rear tire and chain is the "line of sight" method looking down the
>top portion or the chain from the back sprocket to the smaller primary
>sprocket.
>Currently it looks straight, but is there a more precise technique to assure
>alignment and increase tire life? TIA
All that does is align your chain but tells you nothing about the
wheels.
There are a couple of methods that I know about. I like to use a long
straight edge, in my case a six foot carpenters level (cheap and
straight). Measure the width of your front and rear tires, divide the
difference by two. Lay the straight edge along your rear tire
contacting it in two places, align the front wheel parallel to the
straight edge and measure the distance to the tire. It should equal
half the difference in the tire widths.
You can also do the same thing with string running around the rear
tire and along both sides of the front, but I've found that the
straight edge works better.
Having someone help makes it easier. When you have your wheels aligned
note when the marks line up on your chain adjusters and if you
maintain the same relationship between right and left, you can adjust
your chain without fear of excessive wheel misalignment.
Bill Smith<!-- ~MESSAGE_AFTER~ -->
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