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 Posted - February 26 2010 : 09:55:41 AM
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I have a subject Loco that I have pulled the motor from.
It is one of the circa 1980 Open Frame 'slot car' type that screws on to the chassis at an angle with a worm gear over the top of the geared wheel-set. This is it on HOSeeker:
http://www.hoseeker.org/mantuainstructions/mantua462pacificinstrpg02.jpg
After tearing down the motor I suspect the magnets have had it as there is very little 'resistance' when one spins the shaft.
Which leads me to - has anyone re-powered one of these, & if so what did they use?
Motor ref. would be appreciated.
Tanked
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Posted - February 26 2010 : 12:07:57 PM
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The easiest fix is to replace the old alnico magnet with a stack of neodymiums. The motor will perform much better than new.
http://tiny.cc/35rxO
The Tyco Depot
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Posted - February 27 2010 : 09:29:05 AM
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quote:The easiest fix is to replace the old alnico magnet with a stack of neodymiums. The motor will perform much better than new.
http://tiny.cc/35rxO
Originally posted by NickelPlate759Â -Â February 26 2010Â :Â 12:07:57 PM
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Excuse the ignorance on this Nelson, but where is the magnet on this motor - is it the 'block' at the back end?
If so, mine looks riveted in - how do you get a stack of Neod. mags into this motor?
Thanks
Tanked
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Posted - February 27 2010 : 5:13:08 PM
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Yep, it's the metal chunk on the back. Here is a shot of my Big Six with two stacks of neodymiums on either side of the rivet.
These magnets came from Sonicare toothbrush heads, believe it or not. I'm not sure of their exact dimensions, because I don't want to magnetize my calipers. The original magnet is 1/2" high, so you could easily use a 1/2" block magnet and do away with the rivet altogether. You could glue it in, but the magnet will be more than strong enough to hold the motor together.
The Tyco Depot
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Posted - February 28 2010 : 09:07:32 AM
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quote:Yep, it's the metal chunk on the back. Here is a shot of my Big Six with two stacks of neodymiums on either side of the rivet.
These magnets came from Sonicare toothbrush heads, believe it or not. I'm not sure of their exact dimensions, because I don't want to magnetize my calipers. The original magnet is 1/2" high, so you could easily use a 1/2" block magnet and do away with the rivet altogether. You could glue it in, but the magnet will be more than strong enough to hold the motor together.
Originally posted by NickelPlate759Â -Â February 27 2010Â :Â 5:13:08 PM
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Fascinating, Nelson.
How did you get the old block magnet out?
What motor benefits did you get/ [pull more cars or run smoother?]
Thanks
Tanked
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Posted - February 28 2010 : 4:23:49 PM
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The old magnet can be pulled or pried out. The benefits: lower current draw, lower top speed, and more torque.
It won't be quite as stable speed-wise as some can motors, but it's a significantly cheaper option than a Helix Humper or the motors Yardbird Trains sells.
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