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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 07-03-11, 12:58 PM   #1
BluesDaddy 
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Budget Wheel Dishing

Believe it or not, a dish gauge is very easy to make yourself. I used a nice stiff piece of plywood as the basis for mine. Making sure the edge was straight, I cut a notch for the hub and then used two small bolts and a small piece of metal to make a sliding indicator that goes against the lock nut. Then you just flip the wheel over to see if both sides meet the end of the indicator. Here's my awesome MS Paint rendition:
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Old 07-03-11, 01:45 PM   #2
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You can do the same thing by flipping the wheel on a good truing stand. And you can do it with the tire in place and fully inflated which is the right way to set the dish and lateral true.

Last edited by Al1943; 07-03-11 at 02:13 PM.
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Old 07-03-11, 01:46 PM   #3
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Interesting. Since a picture is worth a thousand words and at least 20 MS Paint renditions, can you upload a photo? Please?
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Old 07-03-11, 02:05 PM   #4
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that what my dish stick is. piece of particle board shelf and an old spoke for an indicator
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Old 07-03-11, 02:39 PM   #5
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Quote:
Originally Posted by Glottis View Post
Interesting. Since a picture is worth a thousand words and at least 20 MS Paint renditions, can you upload a photo? Please?
I think my "drawing" is a lot better looking than the real thing. Maybe when I get home from work tonight.

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with the tire in place and fully inflated which is the right way to set the dish and lateral true
Interesting. I've built very few wheels, all mtb, so I didn't have the tire mounted because it would be too cumbersome.
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Old 07-03-11, 02:49 PM   #6
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Interesting. I've built very few wheels, all mtb, so I didn't have the tire mounted because it would be too cumbersome.
Air pressure may not be a problem on Mtn bike wheels, lower pressure, stiffer rims. Air pressure on a road bike can make a 5% or greater change in spoke tension.
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Old 07-03-11, 03:21 PM   #7
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That's a cool solution. Decades ago when I bought my bike tools, I got a Park dishing tool because such a DIY substitute simply did not occurr to me.
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Old 07-03-11, 03:24 PM   #8
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I made a similar dishing tool from a piece of 3/8" square aluminum bar stock about 26" long. I bent it into a shallow "U-shape" until the ends were the diameter of a 700c rim apart and drilled and tapped the center for a long 1/4"x20 bolt that was the indicator.
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Old 07-03-11, 06:05 PM   #9
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When using the flip-flop method, it is important to rotate the axle - note the range of movement left and right - THEN flip the wheel and repeat and check.

This is especially true with el-cheapo loose-ball hubs. Just flipping the wheel is not enough.

El-cheapo hubs often have lock nuts with off-plane facings, bent axles, etc. Need to account for that when using the flip-flop method.

=8-)
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Disclaimer:

1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:

Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
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