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  #1  
Old 11-22-2003, 11:14 PM
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Motor windings findings

I just had a couple of motors "take one for the team", so I could learn what we are dealing with as a baseline for performance. (I posted the same info in another thread, but I thought this kind of information should be in its own thread so as not to be overlooked)

I unwound both a stage 1 and stage 2 armature, and here is what I have to report:

Stage 1: 85 turns, wire thickness is less than 30 gauge. Probably 32 or 34.

Stage 2: 49 turns, 30 gauge.

Just for a kick, I also unwound my (ruined) X Speed: 49 turns, 30 gauge. Same as the stage 2...

I wonder why the X Speed seems noticably faster than the Stage 2 when running unloaded? This does explain why I can run with X Speed cars even with the Stage 2, though.
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  #2  
Old 11-22-2003, 11:42 PM
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I found the same to be true (ran a stage 2 against xspeed miniz) this sorta confirms it. Now if only someone would attach a turbo to the XM and review the effects.

Thanks for the findings by the way.
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  #3  
Old 11-23-2003, 12:12 AM
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it could of been wrapped tighter because that also has something to do with torque and rmp and theres the flat wire thing too but i dont think its on either of these motors
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  #4  
Old 11-23-2003, 02:43 PM
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What about timing on the X Speed? Is it the same as the stage 2?
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  #5  
Old 11-23-2003, 04:32 PM
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what would be a god resoucrce for learning how to do your own motor windings?
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  #6  
Old 11-24-2003, 06:16 PM
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www.MiniZracer.com . It's run by the same people as TinyRC, or something like that. There are any number of good threads, and they even sell wire and empty ball-bearing cans to use.
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Old 11-24-2003, 06:54 PM
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thanks a bunch
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  #8  
Old 11-24-2003, 10:17 PM
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Quote:
Originally posted by Nathan
www.MiniZracer.com . It's run by the same people as TinyRC, or something like that. There are any number of good threads, and they even sell wire and empty ball-bearing cans to use.
You know what I really need are empty armatures...

Quote:
Originally posted by Nathan
What about timing on the X Speed? Is it the same as the stage 2?
They both appear to have "neutral" timing. Maybe the X Speed can just has a little better magnets? But that might actually make it slower. Hmmm...

Anyway, here's some more data to throw out there...

I unwound one of those $1.99 generic motors that RS sells, and it has 72 turns of ~34 gauge. The brushes look kind of cheesy compared to what the other motors use, and the commutator is either aluminium or nickel-plated. It isn't copper, at least on the contact surface.
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Last edited by neurokinetik; 11-24-2003 at 10:22 PM.
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  #9  
Old 11-25-2003, 04:04 PM
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interesting.....

The Mini-Z stock motor is 70 turns, that's why it burns the RS cars....but you think there would be a bigger performance gain going from 85 to 49 turns. 49 turns is what the x-speed is, but the mini-zs with it just seem quite a bit faster. I haven't raced one to see but.....anyone else notice this??
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  #10  
Old 11-25-2003, 06:12 PM
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I think some companies sell empty 130 size armatures. Coulda sworn that i've seen one before...

Someone needs to unwind a spinbrush motor. That should be interesting as well.
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  #11  
Old 11-25-2003, 08:16 PM
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Well, I just picked up my spin brush tonight, so here you go...

First thing I have noticed about this motor is that it has no bearing in the endbell at all. Not even brass. The motor shaft just rides in plastic.

Fortunately, I have a ball-bearing endbell laying around.


The brushes look like the cheesy ones that the 1.99 motor uses, and they were coated in grease.

The motor is noticably torquier than either the stage 1 or two motors, though it spins quite a bit slower.

After unwrapping the armature, I can say that it uses 70 turns of ~32 gauge.

So where is all the torque coming from? I think it's the magnets. They look a bit thicker than the other motors I have open on my bench. Makes sense, since the tighter the magnet/armature tolerance, the more torque you get.

Time to swap these magnets into the Squat BB can along with the 25 turn armature I just wound. Oh, and it only took me about 30 minutes to wind it. No torque, but noticably faster than stage 1 or 2. We'll see what the better magnets do...
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Last edited by neurokinetik; 12-07-2003 at 02:53 PM.
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  #12  
Old 12-07-2003, 01:34 PM
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Congrats neurokinetik this post is mentioned in the FAQ with your motor findings and credit for you.
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  #13  
Old 12-08-2003, 06:26 PM
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Nuro, as far as th XSpeed outruning the Stage 2 in some situations, by any chance did you get to see if the laminations on the XSpeed is balanced?
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Old 12-08-2003, 09:43 PM
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I saw no signs of balancing (holes drilled in the armature or little pieces of epoxy on the corners). Maybe it is just wound better? The wire is a different color, but appeared to be the same guage.
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  #15  
Old 12-09-2003, 12:05 AM
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Neuro,

If they were red (rather than the typical copper) they may have been coated for arcing, or a double. Or maybe flat wound, or "pyramid" wound.

Ah hell, I guess it dosen't make a difference either way if you can still chase one down with a stage 2. Who knows, it may just be a stock-like Stage 2 just broken.
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