Dual 9volt works but not 18 volts.

[redline724]

Hey folks I came up with this idea since I tried it various times.
Do what you want with it.
Please bear
- 3 1.2 volt Ni MH rechargable batteries weigh equal to or greater than a single 9 volt.
- I tested using Alkaline. Radioshack sells 9V rechargables at ~ $12 each. You would have to find a charger or build your own.

To make this quick, at first I hooked up 3 additional AAA batteries totalling 7 and my Xmod was way too heavy and it would slide around too much as I had a 3 pack battery holder taped to the top of my chassis (fit snugly btw).

I moved on...

- I tested a stock motor with a 9volt battery... fast
- I tested same stock with 2 9 volts in series (18 volts total)....really fast..risk motor might burn out.
- I tested with 2 9 volts in parallel (9-18volts, have to verify) and I am suprised how it works slightly faster than 1 9volt battery and the life of the battery lasts longer. With this setup, I still have to test the voltage with my multimeter, have been lazy will do soon.
- I did tested 2 9 volts in parallel with my friends stage 2 camaro, evidently his is the faster car.

Note that because there are two batteries supplying the current rather than 1, they last much longer (something I learned in circuits class).

Let me explain how I wired the batteries up, so that you may try as well.
You will need:
- a soldering iron, they cost ~$11 for a decent one at Radioshack.
- solder ~ $2
- a bag (comes with 5) of 9volt terminal connectors that simply latch on to the 9v ~ $2

1) Grab two positive (red) ends of two different connectors and solder them together. Once they set, this is the tricky part, you will add a 3rd wire by melting the solder slightly so the 3rd wire is included. Think of a Y, the 2 positive terminals connected (soldered) to a single (3rd) wire. Allow enough roo
2) Repeat the same for the negative.
3) cut and strip the positive and negative that go INTO the circuit board, then remove the prehistoric AAA packs by unscrewing 1 screw and prying them off.
4) last, solder the Y connections made before to the right color.

I'm not sure what happens with this setup and a 3rd stage engine, that would be a sight to see. But I do know that 2 9vots are hard to squeeze in my 'stang chassis. My friend with a camaro did it fine. email me or pm if you'd like. Have fun. Later.