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Old Oct 12, 2003, 07:49 PM
AndyKunz's Avatar
Illinois
Joined Sep 2001
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Help ID'ing Motor in C-130

My C-130 has a dead motor. It isn't anything I've seen before, and about the only thing I know is that it runs pretty well on 20 cells.

The motor has 4 brushes and is reasonbly efficient. I can spin one motor and the others in parallel turn, albeit much more slowly.

Is that Black & Decker's logo on the one end?

Anybody know whose gearbox that is?

http://www.montanadesign.com/planes/...tor/index.html

You can see pictures of the model at

www.montanadesign.com/planes/C-130/index.html

Andy
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Old Oct 13, 2003, 03:00 AM
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vintage1's Avatar
East Anglia, UK
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Its probably ex power tool by the looks of it - designed for 12 or 14.4v operation.

But I have never seen anything like it at all.
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Old Oct 13, 2003, 12:09 PM
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Pacific Northwest
Joined Jun 2003
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Andy,

Can't help you on the motor, but I'm pretty sure the gearbox is an early Master Airscrew for 550-600 motors (I say early because I seem to remember seeing somewhere the early units were red). You might send them the pictures - perhaps they would help you with the exact identification.

Good luck.

Tony
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Old Oct 13, 2003, 01:18 PM
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Tony Oliver's Avatar
North-East England
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Help ID'ing Motor in C-130

Here's the unmodified gearbox - Master Airscrew as the other Tony says.

Never seen a motor like that one before.

Tony
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Old Oct 13, 2003, 05:29 PM
AndyKunz's Avatar
Illinois
Joined Sep 2001
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Well this is certainly SOME progress. Thanks, guys.

I'm told from another forum that the B.D is Black & Decker's logo. Anybody know how to contact the right department there?

Thanks.

Andy
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Old Oct 14, 2003, 01:31 AM
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Didn't de Waalt buy them? Or vice versa?
I think this ought to go into the power forum really. There are people there who have used just about everythuing ever wound with copper in an attempt to fly a plane, and I think if you can post the pictures, rather than link to them, a casual browser might just recognise it.
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Old Oct 14, 2003, 04:38 AM
AndyKunz's Avatar
Illinois
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You are probably right. Thanks for moving it.

Andy
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Old Oct 15, 2003, 07:55 PM
AndyKunz's Avatar
Illinois
Joined Sep 2001
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We're getting somewhere. My Dad retires this Friday and he said he'd go up to the local B&D repair place with the motor to try to find the replacement. Upon disassembly, it appears that some minor mods were done. All I need is a new armature - everything else is fine.

The C-130 really pulls, even with only 3 props turning. On 20 cells I was getting 5980 RPM, using 4-blade 8x6 props.

Andy
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Old Oct 16, 2003, 03:50 AM
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If the armature just needs a rewind, and the commutator is fine, thats not a huge problem.

Plenty of auto reconditioning places can do that - or used to. Would need rebalancing tho probly.
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Old Oct 16, 2003, 04:40 AM
AndyKunz's Avatar
Illinois
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I can handle the rewinding, I want a spare before I begin though.

Andy
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Old Oct 16, 2003, 08:41 PM
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canada
Joined Sep 2000
478 Posts
I think you are better off using a speed Geared 600....9.6V BB MOTOR manufactured by SAGAMI of JAPAN which is more efficient than any speed 600 can motors.
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Old Oct 17, 2003, 12:43 AM
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or 4 of them...
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Old Oct 17, 2003, 06:32 AM
AndyKunz's Avatar
Illinois
Joined Sep 2001
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I agree, there are a lot of better motor options available than what the builder chose to implement. However, this isn't a new model and it was the best he had available to him at the time.

Also, modifying the tight nacelles (at least two of them to keep thrust balanced) is not an easy undertaking.

If I can't ID the motor, I will resort to rewinding the armature.

Thanks for the input!

Andy
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Old Oct 17, 2003, 07:53 AM
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If you know the age of the mdel, and roughly where it was built, then that should give you a clue as to what black and decker motors were available.

Heres a potted history of Black and Decker
http://www.roseantiquetools.com/id104.html

I'd say those motors were probably bought as a job lot at a sale, or are ex power tools of some sort.

Unless you can find someone who deals in such and has spares and so on, its going to be very hard to find replacements. If you can find someon at Black and Decker whop might ID a model number and tell you waht tools used them, you are probably stuck with a rewind or nuyinga pair of something similar, and grafting them in.

If you can work out prop/ratio/rpm/current/volts then something suitable can certainly be identified,
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Old Oct 17, 2003, 04:19 PM
AndyKunz's Avatar
Illinois
Joined Sep 2001
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Cool write-up on the history of the company.

Andy
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