Project E-Mini Bike, Using an Outrunner

[BL_RV0]

Got a link to this sliding pot? I get alot of entertainment out of electrifing/motorizing things, so I'll probably so a lot of these conversions, and that would come in handy. Oh also, nice find on the #25 stuff! The place I went to doesn't have a website, but it is basically a place that buys stuff from industrial companies that are going out of biz usually, with a old guy behind the counter, where you just go, pick out what you need out of piles and shelves of crap, and the guy gives ya a price (usually real cheap) and you walk outta there..

[Metallover]

Originally Posted by BL_RV0

Got a link to this sliding pot? I get alot of entertainment out of electrifing/motorizing things, so I'll probably so a lot of these conversions, and that would come in handy. Oh also, nice find on the #25 stuff! The place I went to doesn't have a website, but it is basically a place that buys stuff from industrial companies that are going out of biz usually, with a old guy behind the counter, where you just go, pick out what you need out of piles and shelves of crap, and the guy gives ya a price (usually real cheap) and you walk outta there..

There's a tool place kinda like that around here... But the stuff isn't strewn about and the prices aren't quite as low.

The 90t sprocket I found at monster scooter parts - http://www.monsterscooterparts.com/9...-scooters.html

I found the pot at electric scooter parts .com under the throttles section - http://www.electricscooterparts.com/throttles.html

they also have the 90t sprocket but it's $10 more. Everything is a little more expensive here then at other places. I'd go with mcmaster for everything, but they don't have the 90t sprocket.

I'll take the wheel to a bike place and see if they can screw off the old freewheel. I have anoter freewheel I can bolt a sprocket on off of another scooter. It has a 72t #25 sprocket, but I'll need a little bigger one. Want to gear for about 20-25mph on 24v, and the 72/11 combo I have now will get me 27mph, too much.

New Plan
I can get a 9t sprocket from mcmaster carr, use my 72t sprocket, and add some chain to the mix and then I'll have saved $20 on the 90t sprocket. How much do you think a machinist would charge to machine a 1/4" hole to a 10mm hole?

sprocket is part number 6793K1 and chain is part number 6261K283. McMaster Link is 6261K108

[BL_RV0]

What pitch is your 72t sprocket?

[Metallover]

Originally Posted by BL_RV0

What pitch is your 72t sprocket?

#25, 1/4". It's from an old electric scooter. I sent an email to a couple machine shops getting quotes for modding a sprocket.

[BL_RV0]

Cool. Is the shaft on your motor 1/4" though?

Assuming your motor has a 8mm shaft, you can get this sprocket:
https://sdp-si.com/eStore/PartDetail...63&GroupID=649