Measure Spoke Tension on BMX Wheel I'm building a 20" BMX wheel. I want to check the spoke tension, I'm not sure how to do that accurately. It's a high flange hub laced 3x with 186mm spokes. Because of that, the cross is just off center and makes it difficult to get a centered reading with the tensiometer. (TM-1) Anyone with experience build BMX wheels that could share some wisdom?

I have never build BMX wheels, but used the TM-1 a lot. There is no need to really center the meter on the spoke. The meter functions on the principle that if you apply a force perpendicular to a beam at the center of two support points, the deflection is dependent on the applied force F and on the force pulling in the axis of the beam, on the distance L between the support points (about L^3 ; L= 105 mm for the TM-1), on the beam diameter (about D^-4) and on the elastic modulus of the spoke material. The length of beam outside the support points is less important (except less than 5 mm).

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You can check this by taking a common 28" bicycle wheel and take readings while moving the TM-1 from close to the nipple to close to the spoke cross.