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Timsi

Km/h Speed Formula

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For those interested, I've cooked down a Km/h formula:

km/h = (Wheel diameter in mm x 3,14 x motor rpm x 0,00006) / ((main gear / bewel gear) x (spur gear / pinion gear))

Note that motor rpm often are referred at no load. Batteri output, weight, surface etc also affects. Normaly you can take this formula and reduce teoretical km/h with 10 - 15 % to get close to the actual km/h.

/Tim

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