makaveliks
Quarry Creeper
I started building some motors and ran out of magnet wire... While waiting on more to arrive I decided to post up a build thread and let it marinate to see if anyone with some real knowledge had any tips. I have some small experience re-winding Xmod motors and after 2 or 3 versions I got a winner that was super fast, used very little battery, and stayed nice and cool.
So I have 2 Traxxas 21T 550 Titan motors... Big motor, big armature, big magnets, big winds. This motor produces a good amount of power, speed, heat, and eats batteries quickly. I decided to experiment and see if I could make a 550 crawler motor stronger than the typical 540's That I could run with my crawler ESC's and get decent run times.
First to open the "sealed" can I ground off the folded tabs that hold it closed.
Here's the brushes.(motors have only ran once LOL)
And I didn't take pictures during the first winding. I wasn't thinking about it. BUT I broke off the plastic "fan" on the end of the armature, cut off the old windings because they were glued on something fierce, and then rewound it with 20 gauge wire. Originally it looks like 18 gauge maybe. I could only get 27 turns though. So I then unwound it and used a Dremel to grind out some of the armature on all the arms. I took a little over 1/8 off all the arms, and made the center "hub" narrower to give more room for winds. I then carefully cut and placed electrical tape over the area that the windings go to insulate the armature. I rewound it and got to the current state. I got 35 winds with 20 gauge magnet wire. I ran out of wire and the last arm only got 29 winds... I stuck it back together and it works and has good torque, but I'm not going to put it anything as is. I ordered some more 20 gauge wire, some 24, and 26. I think I might try the 24 and see how 45 or 55 winds fit. Then try the other motor with as many winds as I can get with 20 gauge. I will probably take more off the armature on that one and try to get 45 winds of 20 gauge. Then I'll see which I like better if at all.
Here's the rewound armature:
So anybody try this before? I figure if it works well it should be stronger than a 540 of comparable winds. A big 550 torque monster! I can't wait to get it rewound with the new wire and hook it up in my SCX-10.
So I have 2 Traxxas 21T 550 Titan motors... Big motor, big armature, big magnets, big winds. This motor produces a good amount of power, speed, heat, and eats batteries quickly. I decided to experiment and see if I could make a 550 crawler motor stronger than the typical 540's That I could run with my crawler ESC's and get decent run times.
First to open the "sealed" can I ground off the folded tabs that hold it closed.
Here's the brushes.(motors have only ran once LOL)
And I didn't take pictures during the first winding. I wasn't thinking about it. BUT I broke off the plastic "fan" on the end of the armature, cut off the old windings because they were glued on something fierce, and then rewound it with 20 gauge wire. Originally it looks like 18 gauge maybe. I could only get 27 turns though. So I then unwound it and used a Dremel to grind out some of the armature on all the arms. I took a little over 1/8 off all the arms, and made the center "hub" narrower to give more room for winds. I then carefully cut and placed electrical tape over the area that the windings go to insulate the armature. I rewound it and got to the current state. I got 35 winds with 20 gauge magnet wire. I ran out of wire and the last arm only got 29 winds... I stuck it back together and it works and has good torque, but I'm not going to put it anything as is. I ordered some more 20 gauge wire, some 24, and 26. I think I might try the 24 and see how 45 or 55 winds fit. Then try the other motor with as many winds as I can get with 20 gauge. I will probably take more off the armature on that one and try to get 45 winds of 20 gauge. Then I'll see which I like better if at all.
Here's the rewound armature:
So anybody try this before? I figure if it works well it should be stronger than a 540 of comparable winds. A big 550 torque monster! I can't wait to get it rewound with the new wire and hook it up in my SCX-10.