oMONSTERo

iTrader: (2)

I know I should just buy the latest Blah Blah motor, but I probably wont. I WILL probably buy another motor very soon, but for now, help me out with what I HAVE to work with.
So, Ive got a Core Modified with a VERY worn out comm., what would happen if I put an arm. from a Race Prep Stock motor in it? The Core arm. says TOP19, the RP arm. says EPIC27.
Is there anything "wrong" with swapping arms. between cans?

Bit_Rusty

Pretty sure for racing purposes, you're not allowed to mix and match different brands.

But for bashing/practice that will work fine. Just be sure to get the armature shimmed to the correct position within the can. The armature will have a position in the can that it "wants" to sit at - as a result of the magnetic forces. You need to shim either end of the comm to make sure it sits correctly in this position.

duckman996

iTrader: (14)

There should be no problem... I make these Frankenstein motors all the time. Like mentioned above - make sure you shim the arm properly though.

oMONSTERo

iTrader: (2)

Thats great, THANKS GUYS!!!
Any idea if it'll give me more torque, or speed, or no change at all?

Bit_Rusty

It will perform very similar to the motor you are removing the arm from. The only performance increase you could expect would be a result of:

Going from a motor can with bushings to one with bearings
Going to a motor can with better condition brushes and springs
Going to a motor with stronger magnets

BTW it's worth cutting the comm and throwing some new brushes in whilst youve got the motor in pieces.

MadRacer

iTrader: (33)

I think it will run in reverse as i have done this. You can still use it but + will now be -. I think because mod arms, or more to it hand wound arms are wound in a Hemi Style to get the strands in in even loop at the com not cross over each other like a machine wound arm. Due to this method the windings are opposite to a machine wound arm. IF you are swapping arms from a machine wound arm to another machine wound arm this will not happen, the core is a hand wound mod.

Have fun you have nothing to loose just test before you race it...

PerformanceRC

it will work, but just get your Core modified arms comm cut