U-Bolt as a motor mount?

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reikiman's picture
Last seen: 10 months 5 hours ago
Joined: Sunday, November 19, 2006 - 17:52
Points: 8447
U-Bolt as a motor mount?

I've got a scooter frame and a motor I want to mount on it. The scooter is an old honda elite which was stripped down and formerly had an electric drive on it. I bought it a ways back without its electric drive system and there isn't an obvious way to mount a motor.

One option I've come up with is part# 3042T39 at http://www.mcmaster.com/ ... a u-bolt with a guillotene metal piece.

The motor is a 4 1/2" cylinder, matching one of the sizes. Two of those should hold the motor in place ...but... I'm worried about whether it will keep the motor from rotating in place.

Okay, so I know the typical motor mount is a plate and there are screw holes on this motor mounting this way. I'm just having what may be a brain fart thinking about this particular mounting system.

andrew's picture
Last seen: 12 years 8 months ago
Joined: Tuesday, November 28, 2006 - 17:21
Points: 1361
Re: U-Bolt as a motor mount?

I'd just buy the u-bolts and mount the motor. Then apply as much twisting force as you can which will probably be more than the counter motor torque force and see what happens.

Avatar taken from http://www.electricmotorbike.org/
Anyone got one they might want to sell?
My KZ750 Project: here E.T.A. 1 mo

[url=/forum-topic/motorcycles-and-large-scooters/587-my-kz750-electric-motorcycle-project]KZ750 Motorcycle Conversion[/url]
[url=/forum-topic/motorcycles-and-large-scooters/588-fixing-my-chinese-scooter]900 watt scooter[/url]
Pic from http://www.electri

Fechter's picture
Last seen: 13 years 8 months ago
Joined: Friday, November 17, 2006 - 07:01
Points: 199
Re: U-Bolt as a motor mount?

Remember the original Zappy used a single hose clamp to hold the motor. I never had it come loose.
You could use multiple hose clamps and a base yoke. They make really big hose clamps.

One thing to worry about is the if the motor housing is stiff enough. This is pretty much a function of how thick the metal is. If the U bolt distorts the housing even slightly you run the risk of popping the magnets off (ask me how I know...). It might be better to use one size larger U bolt and "pad" it with some thick hard rubber material. This will also give a bit of vibration isolation.

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