motor re-wind gone bad. Help!

[godsmistake]

So, I finally had time to re-wind a custom motor. I started w/a generic motor I had laying around. Stock it had what seemed like 36 or 38 guage wire and an unbelieveable 216 turns! Not caring if I'd burn out my 'fets I decided to rewind it w/30 guage wire and only 33 turns! The final results were very dissapointing though, it was like I had a stage 1/2 motor in my car. NO torque and about as slow as a zipzap! Where did I go wrong!

[TypeZer0]

why don't you try giving it some more winds?

[godsmistake]

just re-rewound it w/40 turns, very little improvement. I'm gonna try smaller guage wire w/50 maybe 55 turns. I'll try to post the results later tonight.

[Shane_882002]

what do u mean if u get larger wire it will run faster or not i dont get it??????
________
Asian recipes
________
Stracraft 2 Replay
________
Bmw s85
________
Washington Dispensaries

[neurokinetik]

33 turns total, or 33 turns per pole? 33 turns total won't work too well at all, unless you've got Neodymium magnets. Less turns gives less torque,and if you go too extreme, you won't have enough torque to eve reach top speed. Not to mention you'll fry the stock FETs in a hurry.

Generally, when they talk about the number of turns, it is per pole on the armature, not total. I wound a 25 turn motor this weekend, with 28GA wire, to test my new FET setup. It needs to be broken in, as its performance is very inconsistent. When it does hit top speed, however, it really screams. The tabs on my FETs get warm to the touch, but not hot enough to burn your finger.

The other thing to keep in mind when winding motors (and it is probably the most crucial thing) is to lightly sand away the insulation on the wire where you attach it to the commutator. It won't take solder, otherwise, and if you don't make a good connection to the commutator, that particular pole won't do anything on the motor.

[Nathan]

If you can provide enough current to a low-turn motor, it should have more tourqe than one with higher turns. But that is quite hard with AAA batteries. Like neuro said, make shure your solder is good.

In the event you wound an 11 turn motor (11 turns per pole, 33 total) the batteries would not provide the current necessary to push the tourqe to its limit at thier voltage. That is why the higher BitChar-g motors have little tourqe, and why an 8T 1/10 motor has more tourqe and speed than a 9T motor. The FETs also limit current flow, better ones would allow lower motors and have lower resistance.

The speed and tourqe of a motor are determined by armature resistance, so yes, larger wire=more speed.

[godsmistake]

I finally ventured out and got the spin brush pro motor, man this thing has some sick torque! 2morrow I'm gonna go get another 1 and put in the guts from a stage2 motor w/5 turns per pole removed and see what happens. I'll try 2 post back asap.