A very strong magnet in the middle, 5 sets of coils on the outside.
Side view of the magnet.
I started playing around with 7mm coreless motors a few years ago when I tried putting a SuperSlicks motor in an Epoch, just one motor didn’t have quite enough power to push the 80gram Epoch but as it turned out two 7mm coreless SuperSlick motors where just what I was looking for, well almost that is. The problem was that the SS motors where a bit unreliable and burned out too quickly, but eventually I found what I needed.
SuperSlick armature on the left with the red wires, LBSpd on the right with the orange.
Note, I didn't sacrifice a good motor, the burnt com on the right is the result of an entertaining 7.4v 2S LiPo Mini-Z CB Epoch experment.
Side view red SupperSlick on the bottom, copper LBSpd on the top.
SuperSlick magnet bushing left, LBSpd right.
Blue SuperSlick endbell and brushes left, orange LBSpd right.
The SS motor is your basic economy model, and the LBSpd is a made to spec high end Precious Metal Brush (PMB) version. You usually do get what you pay for but the $10 question is which one does the stock dNaNo motor and XSpeed resemble? Unfortunately I only have one and am not quite ready to sacrifice it to the cause, yet.
Coreless Motor Designations
Kind of hard to count the number of turns on a coreless motor, but the armature resistance can be/is used for the same purpose and just like the number of turns the lower the resistance the more current it draws and faster it goes. Please keep in mind though that using a multimeter to measure a motor across the connector through the brushes to the commutator is going to very a great deal from motor to motor, especially used motors. And that the brush and commutator quality between motors will also have a good deal to do with a connector measured resistance value. Oh and one more thing the values I’ve listed for the LBSpd motors are ball park figures close enough for a discussion but not the actual spec'd values.
Left Black – Stock Kyosho dNaNo (4.7 ohm)
Middle Orange - LBSpd Sweet (~3.7 ohm)
Right Green - LBSpd Ripper (~2.7 ohm)
In Car Blue - LBSpd Muhaha (~1.7 ohm)
Since the dNaNo has an XSpeed hop-up motor I thought that my test motors needed X-names too .
My favorite dNaNo motor for the traction side of a 2xWide-L RCP track is the ~3.7ohm Sweet as it’s name implies and I’m assuming that the XSpeed will measure in right around 3.7 to 4 ohms too. More than fast enough with good torque, especially with the batteries I use, but more on that later.
The ~2.7 ohm motor is a bit fast for serious racing, ok that’s not quite true it’s a bit fast for my current dNaNo setup and lol driving ability, but still fun and who knows…
A ~1.7 ohm motor is a bit much and would be more accurately named the Stupid “go fast try to turn and roll like a dog.”
This cars going to be fun.