Re: hot switches [TANKS]

[<mxlyons-at-cox.net>]

Ingenious indeed!

Since it only needs to allow motion in 2 directions, a U-shaped or tubular arm would 
provide more contact area than a spherical ball.  The contact area could be almost 
as wide as the radius of the cam, if mounted in line with the center.

Because the cam is carrying high current, I'd be concerned about insulation between 
the servo and the cam.  A plastic shaft is fine, but a metal shaft or metal screw 
could be a problem depending on the servo design.  A plastic hub or similar in the 
middle of the cam, and perhaps a couple of plastic washers, could solve this problem.

I'd also be careful to insulate the whole thing from everything around it.  Unlike a 
switch or relay, these large contacts are exposed and a catastrophic short needs to 
be avoided.


Mike


---- Frank Pittelli <frank-at-rctankcombat.com> wrote: 
...
>   An ingenious design that combines the servo and switch into one 
> component for controlling two motors.
...