roller races...

[wicz]

hey, im hoping to build a simple counter for measuring distance easily for some roller races.

just hoping to get a bunch of local friends to come over in the winter and have some fun.

anyone done anything like this?

ive made a reducing set of gears out of legos i had from childhood once. not the best set up when its doing about 1500rpms.

was thinking of getting a flywheel of sorts and connecting it to a rotational mechanical counter.

any ideas?

oh, i am an engineering student with access to a rapid prototyping machine. maybe that would be a decent option...

[kinky_cowboy]

If I were doing this today, I'd walk across campus to the computing lab and get them to sort out an interface to your PC from some simple electro-optical or electromagnetic tachometer sensors. Likely to be much cheaper and more reliable than a mechanical system.

[DocRay]

This was done by the mafia in "Les Triplettes de Belleville".


Sounds very complicated. All you need are some cheap bike computers that measure distance and scavenge the signal to a computer to compare on one screen.

[MrCurrieinahurry]

lol ove that film la belle rendavous!
tikka