Mike
Dec 23, 2002, 10:52 AM
Just a few points from my experience.
Actually the magnets can make quite a difference.I've been making magnet zappers,
Gauss meters, and armature resistance/inductance meters for slot car racers for quite
some time and I can tell you, All the pros zap their magnets before every major race.
Slot car motors are identical to RC motors except they for the smaller size and RC
racers are just begriming to realize how important the magnets can be. The biggest
performance increase comes from matching the magnets before installing them in the
can. Some guys will buy 10 sets of magnets then zap them all then check them with a
Gauss meter and pair up the ones with the closest readings. Even if you're using
stock magnets, matching them can make a difference. It's also important to have the
optimum air gap between the magnet surface and the armature. Optimum air gap is
determined by the type of armature and the type of racing you'll be doing. The air
gap will also impact the gear ratio required. Unfortunately this balance between air
gap, field strength, armature type and gear ratio can only be achieved through
experience and experimentation. Some of the big team builders will sort through a
batch of armatures and keep the ones with the lowest resistance and closely matched
windings then sell the rest. This is not as big of a concern these days with CNC
wound armatures. Another thing to watch for is that the armature rests in the center
of the magnetic field, ie, it isn't pulled hard to one end of the can.
Mike
On Sat, 23 Nov 2002 23:57:04 GMT, "Helilt2" <helilt2@maine.rr.com> wrote:
> Hi there. I was wondering if I could get some help in determining the best
>equipment to buy so I can "tweak" and rebuild my stock motors.
> I have been doing a lot of reading about comm lathes by Cobra and Hudy. I
>also see others using tools to align the brush hoods etc.
> One of my questions also is most of the best chargers and lathes run on
>12V. What would be the best 12V power supply to get?
> I know this subject is probably complex but any help or suggestions would
>be appreciated :)
>
>Lenny
>
Actually the magnets can make quite a difference.I've been making magnet zappers,
Gauss meters, and armature resistance/inductance meters for slot car racers for quite
some time and I can tell you, All the pros zap their magnets before every major race.
Slot car motors are identical to RC motors except they for the smaller size and RC
racers are just begriming to realize how important the magnets can be. The biggest
performance increase comes from matching the magnets before installing them in the
can. Some guys will buy 10 sets of magnets then zap them all then check them with a
Gauss meter and pair up the ones with the closest readings. Even if you're using
stock magnets, matching them can make a difference. It's also important to have the
optimum air gap between the magnet surface and the armature. Optimum air gap is
determined by the type of armature and the type of racing you'll be doing. The air
gap will also impact the gear ratio required. Unfortunately this balance between air
gap, field strength, armature type and gear ratio can only be achieved through
experience and experimentation. Some of the big team builders will sort through a
batch of armatures and keep the ones with the lowest resistance and closely matched
windings then sell the rest. This is not as big of a concern these days with CNC
wound armatures. Another thing to watch for is that the armature rests in the center
of the magnetic field, ie, it isn't pulled hard to one end of the can.
Mike
On Sat, 23 Nov 2002 23:57:04 GMT, "Helilt2" <helilt2@maine.rr.com> wrote:
> Hi there. I was wondering if I could get some help in determining the best
>equipment to buy so I can "tweak" and rebuild my stock motors.
> I have been doing a lot of reading about comm lathes by Cobra and Hudy. I
>also see others using tools to align the brush hoods etc.
> One of my questions also is most of the best chargers and lathes run on
>12V. What would be the best 12V power supply to get?
> I know this subject is probably complex but any help or suggestions would
>be appreciated :)
>
>Lenny
>