Drill Press Belt

[Bruce Johnson]

Well, maybe a small sequoia....or a small sequoia branch Those little import motors aren't known for having a whole lot of torque. But now you're squeezing every little inch-pound out of it! Cog belts are a big improvement over standard V-belts. Those wavy notches allow it to bend tightly to a smaller radius. Now you're getting about 160 degrees of contact around that little motor pulley.

[defaced]

Is the pivot the motor is mounted on slipping? I'm not sure what you call it, but you have to loosen that and move the motor and tighten it to get the belt tight. Whenever I had belts loosen on drill presses, it was usually that bolt coming lose.

Damn you for thinking of the obvious I have tried to adjust this motor at least three times before and apparently always missed the little thumb screw that moves the motor back and tightens the belt. Thanks for suggesting this, because I was missing it.

[tedmich]

I love cvt designs, it took a while before they were small and light and could handle the torque of a car. I always wanted to make a cvt for my bicycle as the old derailleur design is from like 1880... I looked into electrorheological systems but didn't like the kv power supply needed, but magnetorheological systems look really promising:

thats Lord Corps fluid going from thin to peanut butter under a magnetic field (power of Lord makes you thick?)
decent tech description here
http://www.isope.org/publications/pr.../I99v4p563.pdf

[David Schwab]

I looked into electrorheological systems but didn't like the kv power supply needed, but magnetorheological systems look really promising:

thats Lord Corps fluid going from thin to peanut butter under a magnetic field (power of Lord makes you thick?)
decent tech description here
http://www.isope.org/publications/pr.../I99v4p563.pdf

Cool!