The Servo Speed Control.
Servos are pretty cheap, so buy an extra one to experiment with. Here is a link with a picture to help visualize the steps. It is German. Don't worry, I'll talk ya through it....
http://home.t-online.de/home/tfeucht...s/servo_e.html Thanks again Thorsten
1. Disassemble it. Pull all of the gears off the top. (Save them for possible future custom micro drive trains?)
2. Take all the electronic parts out and leave them connected to each other by the wires. Note: Some servos have parts that are rubber glued to the inside of the casing. Just peel it or cut it away with an xacto. Throw the housing/case away.
3. You now have a micro proportional motor and speed control system. Plug it into your receiver and test it! It's cool! O.k, stop that.
4. Note the parts: the circuit board, the motor, and the pot (potentiometer?) The pot is used to find the neutral point between forward and reverse. If you are testing it, and the little motor is still spinning when your transmitter is neutral, just turn the pot slowly either way to find the zero point.
5. Say to yourself, "this pot is too big. I must change it to a micro 5kohm adjustable resistor."
6. Go to Radio shack or other fine electronics supply store and buy a micro 5kohm adjustable resistor. I found one that is 4.8kohms at radio shack that works fine.
7. Un-solder the pot and re-solder the adj resistor on the wires. Take note of the color of the wires. One of them goes in the middle. Your task is to find which one. DON'T CUT THE RED WIRE!! (just kidding. I always wanted to say that.......I watch too many movies.......)
7. Rejoice, for you are done.
It is actually easier than it sounds. The little adjustable resistor does the same job as the pot, but can be mounted in the vehicle where a small screwdriver can be inserted into the middle of it to adjust the zero point. I don't know why, but you have to adjust it all the time. Don't complain, it's supposed to be a servo, not a speed control......
Good Luck!
,
-Todd
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