Playing with wind power

[J57ltr]

Wasn't really thinking direct drive I was thinking 4:1 to the motor. I have a bunch of prototype parts from when I was developing a small coonveyor for our company so I have a bunch of .080" pitch belts and some 60 tooth 1/4" sheaves and belts and 15 tooth sheaves that are bored to 5mm (our motor uses a 5mm shaft too). I think the gearboxes would have too much drag, and the only ones I have are about 30:1 and another that's about 100:1.

I swear that at the same RPM the lower KV motor had a higher voltage out.

This is going to be a pretty small unit about 16" tall and about 12" in diameter. Just for testing too see what I can do just with what I have laying around.

Jeff

Keep the ideas going!

[_paralyzed_]

Originally Posted by J57ltr

Wasn't really thinking direct drive I was thinking 4:1 to the motor. I have a bunch of prototype parts from when I was developing a small coonveyor for our company so I have a bunch of .080" pitch belts and some 60 tooth 1/4" sheaves and belts and 15 tooth sheaves that are bored to 5mm (our motor uses a 5mm shaft too). I think the gearboxes would have too much drag, and the only ones I have are about 30:1 and another that's about 100:1.

I swear that at the same RPM the lower KV motor had a higher voltage out.

This is going to be a pretty small unit about 16" tall and about 12" in diameter. Just for testing too see what I can do just with what I have laying around.

Jeff

Keep the ideas going!

I'm really curious about the small sheaves and belts you speak of. I've been toying with the idea of a belt drive rather than a traditional spur/pinion. Have any links or pics?

[J57ltr]

Stock Drive is a place that carries them. They are called Timing pulleys, I guess I just use sheave for anything that uses a belt. http://www.sdp-si.com/web/html/drivesystems.htm

I can’t pull up anything on their site right now but I use a 3/8” wide .080” pitch Kevlar reinforced belt. A 15 tooth drive pulley that we bore to 5mm and a 30 tooth that comes ¼” bore and, is just under 1” in diameter we bore it to 3/8”. The belts are strong but would probably wear out fast in a RC think belts run about $6 the larger pulley runs about $15 and the smaller ones about $9. Of course that’s just a 2:1 ratio they also have plastic pulleys and ones with larger teeth (that’s usually the first thing to go). There are some others but I’ll have to check at the office.

Jeff