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Post by finistauri on Jun 24, 2021 3:04:49 GMT -7
Good Day Bill How can one order from this company, This link shows Armature's and Motor magnet's, Great Information also. Fin |
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Post by crazynski on Jun 24, 2021 5:28:19 GMT -7
I agree Fin.
El Camino Bill's article is print-worthy information.
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Post by ecbill on Jun 24, 2021 9:06:24 GMT -7
This is some good info that someone took the time to compile. It’s a few years old, so any companies mentioned may no longer be in business.
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Post by dave632 on Jun 27, 2021 13:12:21 GMT -7
As far as for stock or Gasser operation of a T jet or early AFX/4 gear it is hard to beat the Dash/Johnny Lightning magnets.
I have checked many of these for strength and they read in the 800-1000 range on my gauss meter. Performance is very good when
running a mean green or stock 14-15 ohm armature.
Some newer style ceramic magnets now read quite a bit different on the inside and outside of the magnet. Must be due to some new manufacturing process. In some cases these new magnets perform very well with 6-15 ohm armatures. I have seen them read 7-800 on the inside and 13-1400 on the
outside. Still they are ceramic and would qualify in those classes where ceramic is required.
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Post by crazynski on Jun 27, 2021 14:11:13 GMT -7
Good information Dave. Thank you! Is there a special way to store magnets so they don't weaken in strength? I can't imagine having them all stacked the way they ship them is good for them?  |
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Post by dave632 on Jun 27, 2021 17:27:32 GMT -7
I have not seen any loss in strength no matter how they are stacked. Seems like having them attached together so that they flow
in the proper direction would help but I have never measured any loss no matter what way they are stacked. Old Aurora stock magnets measure
in the 3-400 gauss so maybe with a lot of time some power is lost but a few years does not seem to make much difference. I have some old
blue yellow Aurora Super G+ magnets that still measure 7-800 gauss which is what they probably measured 45 years ago. Modern Dash/JL magnets
are just as good as those old blue/yellows and maybe better. Some of the newest ceramic ones that have come out are even better.
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Post by crazynski on Jun 27, 2021 19:20:05 GMT -7
Thanks again, Dave.  |
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Post by pete on Jun 28, 2021 6:11:48 GMT -7
Ceramic magnets loose strength in two ways, heat and blunt trauma (dropping them on the floor). Magnets can be zapped. It won't make them stronger but brings them back to the most magnetism they can hold. Which means still look for what you think is the best pair of matching gausse you can.
On a side note it goes with what Dave advises, the strongest magnets doesn't always give the best track performance.
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Post by wbj on Jun 29, 2021 17:42:45 GMT -7
One additional note... make sure that when you store them they do not repel one another. They should always be stored in a way that they attract each other.
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