11 replies to this topic

[Mudhen]

Are there commercially available neo magnets for a Box 12 setup? And is there any real advantage to using them over conventional ferrous magnets? I have read that when heated, neo loses gauss, but would a fan cool them off sufficiently, or would this not be a concern?

[mreibman]

I have one I built.

 

huge air gap, runs ok for a play car. I just put it in a gp12 wing car for practice and testing.... will let you know.

 

But in previous use - it's been fine. nothing special. But certainly lighter than the C-can magnets. Also totally illegal for any posted classes.

 

YMMV.

[Bill Seitz]

I've not seen neo magnets for a C-can. Mid-America does have cobalt magnets for a C-can, but I haven't tried them - yet. However, class rules may not allow using other than ceramic/ferrite magnets.

 

I'm sure with all magnets there are multiple grades, and the degree to which they're effected by heat depends on grade. The neo grades for which I've found data have Currie temperatures between 590 and 662 F, with operating temperatures from 176 F to 428 F. This can be lower than ceramic and especially cobalt magnets, but with care, neo magnets work reasonably well in slot car motors, particularly the "solid" or sintered neo type used in some motors. For comparison purposes, ferrite and cobalt magnets have maximum operating temperature of 570 F. Cobalt magnets have a Currie temperature around 800 F.

 

Neo is the strongest magnet, but the least heat tolerant. However, the lower heat tolerance isn't usually a problem or difficult to manage. Just watch the motor operating temperature and don't get carried away with a soldering iron.

[Dave_12]

Interesting i am following this subject  . A Hawk 6 setup has neo magnets what about that it would be lighter thana C can . 
Remember that all magnets need to be zapped every so often and a Cobolt magnet zapper is needed to zap neo magnets.
Ceramic magnet zappers are not that expensive but not many people own Cobolt magnet zappers. 

[Mudhen]

Interesting i am following this subject  . A Hawk 6 setup has neo magnets what about that it would be lighter thana C can . 
Remember that all magnets need to be zapped every so often and a Cobolt magnet zapper is needed to zap neo magnets.
Ceramic magnet zappers are not that expensive but not many people own Cobolt magnet zappers. 

I am interested in a motor that can be repeatedly rebuilt, thus a Ccan. Plus I enjoy tinkering with motor setups. I am however, not up to date at all with the world of slot cars so I guess that I am now on a learning curve.

[Bill from NH]

Another option, Proslot & JK both sell a mini motor with a removeable endbell that could be rebuilt.

[Dave_12]

That is true Bill i have been wondering how one of those mini setups would go with a G12 arm?

[MSwiss]

Neo mags have come a long way in the last 5-10 years.

 

There are different grades with different heat handling capabilities.

 

I pay the highest price for the highest heat capacity. 

 

With my CR102, Retro racers sometimes gear the cars a little over 2-1(12-27) with .812 tall tires, and routinely run the motor until the windings turn black, especially on faster, higher power Kings.

 

While they occasionally blow, in most cases they don't, and guys run multiple races with them.

 

IOW, if the motors were slowing from weak magnets, they certainly wouldn't be trotting them out for their 6th or 7th race.

 

We also use them in GTP flexi cars where the motors are soldered in.

 

With the racers still using the C21 chassis from the JK RTR cars, they get exposed to a lot of heat soldering them to the top of a steel plate and they run fine.

[Mudhen]

Neo mags have come a long way in the last 5-10 years.

 

There are different grades with different heat handling capabilities.

 

I pay the highest price for the highest heat capacity. 

 

With my CR102, Retro racers sometimes gear the cars a little over 2-1(12-27) with .812 tall tires, and routinely run the motor until the windings turn black, especially on faster, higher power Kings.

 

While they occasionally blow, in most cases they don't, and guys run multiple races with them.

 

IOW, if the motors were slowing from weak magnets, they certainly wouldn't be trotting them out for their 6th or 7th race.

 

We also use them in GTP flexi cars where the motors are soldered in.

 

With the racers still using the C21 chassis from the JK RTR cars, they get exposed to a lot of heat soldering them to the top of a steel plate and they run fine.

I seem to remember you from the Old Weird Herald. Mike, can you give me a source for Neo magnets?

[MSwiss]

All the good Neo's are made for the FK sized motor. 

 

I'm not sure how they would fit in a C can.

 

I sell them for 7.95 but they are a slow seller as people can source them from mine and other's throwaway motors.

 

I certainly was on OWH, during my last couple years as GM at Koford, and about until a few years ago when OWH started to fizzle out.

[Mr. M]

A 12 arm in a Hawk 6 runs just fine, albeit a bit slower than a ceramic C can. Locally it is called 12 Lite in the FL Wing Car Series. It’s attractive because of the low cost Hawk 6 compared to a C can.

[Bill Seitz]

The JK setup with the removable endbell is the Hawk 6. The standard Hawk 6 comes with lower performing "poly" neos, but there is also a version that comes with "solid" neos. ProSlot has a US "12" arm that was intended for their original ceramic magnet Euro motors, also with removable endbells, and Koford made one for the original JK Hawk which also had ceramic magnets. The original thinking was apparently that these winds were too hot for neo magnets. In the meanwhile, JK introduced the solid neo Hawk 6, and Koford now has a higher timed "12" arm for that setup. ProSlot has a range of "Velociraptor" drag racing motors that use solid neos with US armatures up to open winds. While none are recommend for other than drag racing, I've been tempted to try some of the milder winds in circuit track wing cars. The Velociraptor line includes another "12", a "20" (aka "F19"), "Wolf" (24T26), and "VX" (30T26) as well as 23 and 24 gauge wire winds. These are available as both arms and complete motors. This year, ProSlot also added the Chinese-built "Razorback" (30T28) to their line at $35, a better bargain that the motors with US arms. These are all removable endbell "F" motors now using ProSlot's new can introduced with the "Speedball" and "Sentry" motors. These ProSlot arms can also be used in the Hawk 6 solid neo setup.

 

I've had the original lower timed "12" arms from Koford and ProSlot for years and they run well. I've also used the ProSlot "Big Dog" (55T30 - similar to the Super Wasp) for a similar period. This year I have been testing both the "VX" (30T26) and "Razorback" (30T28) motors in wing cars. As with any motors/arms of this performance, one can be smoked in a jiffy with the wrong gear ratio, but otherwise they seem to do fine and are very fast. I now also have a "Wolf" in the Hawk 6 solid neo setup, but that hasn't been tested yet. It may say "drag racing only", but that's not entirely true. The main thing seems to be to choose gear ratios so the motor doesn't run too hot.