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02-01-2011, 12:32 AM
| #1 |
| Rock Stacker Join Date: Oct 2010 Location: San Antonio
Posts: 56
|  "Rare earth" motors Cobalt and Neodymium?
Am looking for a Neodymium Brushed motor. I have only found the Holmes Cobalt Puller motor. Has any one here found a Neodymium motor that is not a brushless? Any suggestions?
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02-01-2011, 08:28 AM
| #2 |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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Yep, Astroflight makes quite a few: http://www.astroflight.com/ |
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02-01-2011, 03:02 PM
| #3 |
| Rock Stacker Join Date: Oct 2010 Location: San Antonio
Posts: 56
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Thanks for the link. I guess I will keep looking for what I want. Still open for suggestions.
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02-02-2011, 01:38 PM
| #4 |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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02-02-2011, 06:36 PM
| #5 |
| Rock Crawler Join Date: Feb 2006 Location: Where the foams are always wet
Posts: 878
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02-02-2011, 06:48 PM
| #6 |
| Quarry Creeper Join Date: Oct 2006 Location: kansas city
Posts: 369
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There used to be a guy back in the day on Big Jims forum that went by Neomag and I have a couple of cans he put neo mags in for me. Don't know if he is around anywhere or not. Try Eddio O from Brood, he and Big Jim were tight and I know Eddie is building a neo mag motor right now. Randy |
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02-02-2011, 07:03 PM
| #7 | |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
| Quote:
 I thought the guy was looking for a puller style motor (since he asked about cobalt and neo magnets).... | |
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02-02-2011, 09:35 PM
| #8 |
| I wanna be Dave Join Date: Apr 2007 Location: Arlington, Washington
Posts: 2,303
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My new axles buster has neo mags....still a couple months out, but they are coming along. I've never had any luck getting a hold of neomags. His webpage is still up, but he doesn't respond to the emails or anything.... Randy, if you ever wanna sell one of those NEO motors, lemme know.....I would love to get one for my collection... Later EddieO |
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02-02-2011, 11:14 PM
| #9 | |
| Rock Stacker Join Date: Oct 2010 Location: San Antonio
Posts: 56
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02-02-2011, 11:36 PM
| #10 | |
| Rock Stacker Join Date: Oct 2010 Location: San Antonio
Posts: 56
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02-03-2011, 08:47 AM
| #11 |
| I wanna be Dave Join Date: Apr 2007 Location: Arlington, Washington
Posts: 2,303
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Hopefully some time in march.......still testing, but I am expecting the arms in march.........gotta wind them and such, but still working on can and magnet designs. Later EddieO |
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02-03-2011, 09:20 AM
| #12 | |
| RCC Addict  Join Date: Jun 2005 Location: St. Albans
Posts: 1,441
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02-03-2011, 09:35 AM
| #13 |
| owner, Holmes Hobbies LLC   Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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The NeoMag motors had horrible startup. I think Fish bought one about 4 or 5 years ago. Much too strong of a field for use with standard 3 slot arms in a crawler. As Eddie no doubt knows, it is a balance of steel concentration and magnetic strength. Make it too powerful and the detent torque kills low speed control. Make it too weak and power is left on the table. I built one a few years back and shelved it. Built another one 6 months ago with the 28mm armatures and still didn't like the low end control. I'm still working on figuring out the right magnet and arm combination, but so far the only ones that work decently have too large of an airgap and the mid to high load efficiency went in the toilet.
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02-03-2011, 12:59 PM
| #14 |
| I wanna be Dave Join Date: Apr 2007 Location: Arlington, Washington
Posts: 2,303
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The NeoMags motors would be terrible in a crawler......they were pretty much for drag motors and that's it. We had one at some point, but it got lost in transit when going to a race..... I just collect all things brushed motor, and would love to get one... Balance between the two fields is a must, hence why I am still messing with winds, magnets, etc.......its close though. One thing is for sure, even once figured out, they will not be for every truck or driver...... Later EddieO |
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02-03-2011, 09:29 PM
| #15 | |
| Quarry Creeper Join Date: Oct 2006 Location: kansas city
Posts: 369
| Quote:
Let me dig them out and I will pm you. I sent him 2 Reedy cans and he put the mags in my cans. I think I paid $50 a can and never really did anything with them. I put one in a sprint car with a 10 turn arm running on 6 cells and it didn't matter how much I geared it up, it would rocket out of the corner but run out of steam half way down the straight. Randy | |
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