Flywheel on/off motor shaft

Flywheel on/off motor shaft

Postby ConducTTor » Wed Sep 04, 2013 7:29 pm

What's the best method of getting flywheels on or off motor shafts without bending the shafts?
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Re: Flywheel on/off motor shaft

Postby AstroGoat760 » Wed Sep 04, 2013 9:56 pm

ConducTTor wrote:What's the best method of getting flywheels on or off motor shafts without bending the shafts?


My experience (and this is with multiple scales) with the removal and installation of flywheels on and off of motors is much the same as with wheels and axles: For removal, I have used (and recommend) a gear/wheel puller. Northwest Shortline makes a series of pullers that work well for the task. For installation/replacement, a wheel press or a clamp will work out nicely. I have a table clamp that I have modified into a press that has worked wonderfully so far for me.
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Re: Flywheel on/off motor shaft

Postby ConducTTor » Wed Sep 04, 2013 10:00 pm

Thank you sir. Any other suggestions? Perhaps there's a few pics or videos somewhere out there? I'm just sick of bending motor shafts and need a rock solid method for doing this.
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Re: Flywheel on/off motor shaft

Postby MacG » Thu Sep 05, 2013 2:46 pm

I think, a gear or wheel puller is the best method to get i off. Like this. A wheel press looks like this.
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Re: Flywheel on/off motor shaft

Postby ConducTTor » Thu Sep 05, 2013 4:29 pm

Thanks gents.
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Re: Flywheel on/off motor shaft

Postby railtwister » Thu Sep 05, 2013 5:45 pm

I've used a small desk model drill press with some success. One of the keys is having enough shaft on the other end to get a grip on. For motors with two flywheels. you'll probably need some way to block the first flywheel from letting the shaft slip inside the flywheel and armature.

You may be able to straighten the bent shaft using the drill press manually (without turning it on). My Dad used to straighten the bent cranks on his model airplane engines after they were damaged in a crash (without using a dial indicator). I couldn't believe it when he told me, but I saw the engines run afterward and there were no vibrations or prop wobble, so I guess it can be done if you have the patience.

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