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Where do you get gears, pulleys, belts, etc?
Kremmit:
I've ordered from McMaster before and everything worked out wonderfully. The toughest part was locating the part# for the item I wanted.
Thanks for the tip about Grainger; I drive past a Grainger warehouse every day, I had no idea what business they were in. I'll have to check that out next time I need some random goodies.
DaOld Man:
--- Quote from: solderguy1 on November 08, 2007, 06:45:11 pm ---Picked up a $7 caster at Orchard Supply last week. unscrewed the axel bolt and removed the wheel, it looks like a 2x4 can be bolted there instead. Then the baseplate can be joined to the lcd monitor by using another board in between.
--- End quote ---
That sounds interesting.. Got any drawings? (Or pics).
koz319:
What size is the shaft of your motor? Some of the single groove v-belt sheaves at Grainger & Mcmaster aren't too expensive, depends on the bore diameter and outside diameter.
Here's a 5/8 bore, 3" outside diameter for $5.19, is this the type of thing you are looking for?
http://www.grainger.com/Grainger/items/3X904
Mcmaster has a similar part # 6245K29 for $4.80
These are very similar to what I use.
Koz
DaOld Man:
That might work for the pulley that will mount to the monitor section.
The motors I have look like both have 3/8" dia shafts. (I will need to drag out my micrometer to confirm that.)
One motor has a very short shaft, the other about 3/4".
And the motors have mounting tabs that will limit the diameter of the pulley.
I will most likely have to have an adapter machined, and I wanted to stay away from that, because this is a "roll your own" project. (I dont have the machines to do it.)
I was thinking of using a flat type belt, like servo and stepper motors use.
I was also entertaining the idea of mounting a bicycle chain around the outside circumference of a wood disk, then have a small sprocket mounted to the motor, pushing the chain. But chains need oil, and I dont want oil inside my box.
bfauska:
Many chains are coated to inhibit rust, if you use a dry lube like graphite powder you may be alright w/o introducing oil into the cabinet.
I think that it would be great to see this project done with surplus bike parts. Of all the sources we've listed, used bikes are about the most widely available and cheapest option I can think of.