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View Full Version : Where to scavenge a suitable motor



whitbytom
08-04-2008, 11:26 AM
I've read the project through thoroughly (great book, highly recommended), and have amassed the parts necessary to start, except for the motor.

I'm in the UK, and would like some hints on where to look for a suitable 24v motor as used in the book. I've read that a car starter motor is not a good idea as it would be likely to overheat, but is there anywhere I could find one without buying new? Would a washing machine motor work for instance?

Thanks

trikeman
08-07-2008, 11:52 AM
Got a chance to buy one of these used for $80. It has a 350W motor, controller, charger, and batteries of unknown condition. Deal or no deal?

http://www.razor.com/products/mx350-dirt-rocket.php

I would of course be hacking it apart for parts.

Gerald_G
08-07-2008, 12:28 PM
Might be able to buy just the motors from Razor in the parts store...

http://shop.razor.com/product.php?productid=16391&cat=268&page=1

350W - 24V

And the Control module...

http://shop.razor.com/product.php?productid=16388&cat=268&page=1

These are for the dirtquad product.

Or the motor for the 650 W

http://shop.razor.com/product.php?productid=16269&cat=260&page=2

and controller...

http://shop.razor.com/product.php?productid=16246&cat=260&page=2

There's actually a lot of cool parts for sale.
shocks - handlebar mounts - wheels - tubes - switches - throttles etc.
Might be good source for the electric folks.

Check out this front wheel from the 650.

http://shop.razor.com/product.php?productid=16257&cat=260&page=2

trikeman
08-07-2008, 01:26 PM
I decided to let that one go too, since the sum of the parts value doesn't seem much more than what they are asking. I will keep my eyes open though. It had a tiny little motor (350W) that would have fit nicely under the seat back of my Delta Wolf with some batteries for a nice stealth setup. The more I think about it the more I think that the DW, with its independent axle where the disc brake is would make a good platform for my first electric. I may end up putting my electric mower motor on it yet.

whitbytom
08-08-2008, 04:23 AM
The Sparky bike in the books has a 24v 2kw motor to achieve a speed of 30mph. I have found plenty of inexpensive motors up to around 400w but I'm finding one at 2kw very hard to find at anything other than horrendous prices

trikeman
08-08-2008, 06:33 AM
I am not sure why anyone needs a 2kW motor on a bicycle, unless they want to smoke the tires. When I said the motor on that Razor was "tiny," I was referring mostly to its physical size. It wasn't much bigger than a 9 oz can of Planter's Cashews.

I have read that the average out of shape bicyclist is capable of putting out 100 Watts for an extended period of time, and a well trained cyclist can put put about 300-400 Watts for extended periods. Given that, a 350 Watt motor ought to propel one of these creations at speeds up to say 20 mph just fine, if properly set up.

Locutus
08-08-2008, 12:29 PM
Yesterday I was at my local Sam's Club (the costco of wally's world) and saw an I-zip scooter for $307 (USD). It has a 900 Watt motor and 24 volt SLA battery pack. I think this might make an excellent donor of electrical parts for a hybrid, although you'd need another full size bike frame and wheel set. The motor chain gearing could easily be altered to give greater speed than the 15 mph the scooter is rated at. Or just a larger rear wheel would do it. You'd be doing that anyway because the scooter wheels are small. With electric conversion kits typically running anywhere from $800 to $2000, I think this would be worth a look.

n9viw
08-08-2008, 12:48 PM
Just a brief thread hijack: I followed Gerald's link to the Razor site, and saw this: http://www.razor.com/products/powerwing.php - flavors of the SpinCycle, or Brad's scooterized version of the same? Chicken or egg? Who knows.

As for that, THIS (http://www.razor.com/products/rip-rider-360.php) is a TOTAL AZ rip off! Has Kat called the copyleft lawyers yet? ;)

Now, back to your regularly scheduled nonsen... er, thread. ;)