An engineer who likes to collect data everywhere he goes, Craig figured out how to mount a speedometer that uses a Hall-effect sensor on his 42-inch-long skateboard. By calibrating it for the 65-mm old-school wheels, he now knows his current speed, average and max speed (30 mph!), trip miles, and total miles traveled. Given the slight imbalance created by the wheel-mounted magnet, the only thing left for him to compute is a quick cure for road rash.
Skateboard computer parts list
Allied Part #
Foam mounting tape
Other supplies: Speedometer assembly (Out of Line Sports), custom-made board cover plate Cowabunga dude, check out the full assembly details!
The choice between helical and spur gears in gearboxes may seem straightforward. But with planetary gearboxes, however, the choice between helical and spur gears requires some additional thought. Here’s what you need to know to make the right choice.
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