[jevries]

I believe it's time for a sticky part on this forum on how to stuff like this:

-Black wire to neg on battery
-Red wire to pos on battery
-Orange wire to one of the motors terminals
-Yellow to one of the motors terminals
Good luck!

 

[jevries]

My HW hoppers work on a small 9V battery which is packed inside a small switchbox so in order to get it to hop nice I need to use a toggle switch.

 

[jevries]

The more torque the little motor has the less easy it will come down...Check the torque by turining the motors shaft by hand..if there's quite an amount of resistance it has a lot of torque. You can add a small fishing weight up front to get it down again.
Slack...I useally give it like 1cm of slack.
How many AAA's are hooked up to the motor? It needs quite an amount of V's and Amps to get it to hop.

 

[jevries]

Useally motors are running from 1.5V to 6V...and other configs like this. There are also solar motors which run on a way lower Voltage and cannot handle too much V's.
What type of motor are you using? I bet you can just go ahead with a 9V battery no problem there. With the single or dual AAA battery your car will not hop or very poor.
For instance those small N20 motors can handle 6V and slightly more...motors you will find in micro RC cars also can handle 6V as a maximum.

 

[jevries]

Although these small micro RC motors can handle up to 6V ther are in particular not very strong meaning they don't have a lot of torque. Try to find the n20 or ff30 motors made by mabuchi they use these a lot in Micro RC flight stuff.

 

[jevries]

Good luck man!