Wiring an On/Off Switch

Originally Posted by MacII

Can't answer the Spektrum questions, they are a bit off the main subject of how best to wire in an On/Off, so far on the BEC is the only suggestion, any other ideas?

I think the Spektrum is at the heart of this problem.

As far as I know a switch on the BEC side is your only option, unless you can get some 100amp plus switches for the main power.....not very practical :002:
I too have had this problem ONLY with the 2.4ghz and stangley ONLY with the 9920 and not the 18.97. Fitting the switch to the BEC fixed the problem.

[BrianG]

I too think the Spektrum is part of the problem, that's why I mentioned it. Binding position would be an easy thing to overlook and rectify. I always like to start with the easy (and free) solutions. Sorry to make it seem like I was going off on a tangeant. :)

A UBEC is a switching regulator and might be prone to start up noise until the regulator circuitry can settle down and provide relatively clean DC (switching regulators generally use current feedback to regulate the voltage). It is possible the Spektrum receiver does not like the startup noise and gets a little crazy. A switch is probably the easiest solution. Another may be to add a capacitor to the output of the BEC; it would filter the DC output and would also help beef up current pulses for better servo response.