disk brake choice

[frank]

i have seen 3 different calipers
http://www.mfgsupply.com/m/c/4-9306.html (princess auto has this one for 70 canadian dollars)
http://www.mfgsupply.com/m/c/4-9952.html
http://www.mfgsupply.com/m/c/4-488.html
which one is minimal for a small go kart use? seems cheaper than a band brake system for some reason.

[frank]

http://i35.photobucket.com/albums/d171/saladtossser/homemadecaliper1.gif

can i make my own hydrolic system like that? i can get a almunium cylinder machined with o ring grooves, and a pneumatic or hydrolic cylinder from a local supplier to be mounted on the pedal

or, how about some thing resembling a clamp, with brake pads, with a pneumatic or hydrolic cylinder on one end to open or close the clamps

or how about getting a vice grip mounted, had brake pads on them, and use it like a mechanical caliper?

[jrjulien1]

i suppose you could but it might leak through the o rings if it wasnt a perfect fit

[frank]

thats why there is o rings, so it doesnt leak, orings can be compressed a bit, makes for a better seal

[jrjulien1]

i no but i thought that the o rings might leak a little when thier under high pressure like whats needed inside a brake system