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Wheel building question

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Narcoleptic Insomniac:
If a wheel  is strongest when all the spokes have the same tension, how do you know what's the optimal tension and does it vary depending on wheel size or spoke gauge? I'm thinking about getting one of those Park Tool spoke tension measuring tools but I don't know if it'd even work with 20" wheels.

Sasha:
They don't fit on 20" wheels. Park Tool has a chart for optimum spoke deflection on their website, it varies depending on spoke length, thickness, shape and material. I rarely bother checking, especially for BMX. Just do em up tight enough.

LeonLikesToRock:
I wouldn't bother on a 20". If it is straight, doesn't go up and down and the tension feels alright it probably is.

Trail-Boss:
Best way to check tension on a small wheel is to listen to the tone that the spoke makes when you pluck it like a guitar string.
Not the most scientific, but after a while you will notice where the lower tensioned spokes are located because their tone is lower.

As fedtom said the park tool will not fit on a 3x 20 inch, and I have not seen a tensionmeter todate that would fit, although someone may have modified one?

Banana Pancake:
The DT Swiss tensio fits on a 20", but that fucker is like $700. As said above, don't worry about it too much. If the wheel is true and the spokes feel decently tight, you should be good to go. BMX wheels are strong.

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