Need explanation- electronics to operate screw drive

[JDH429]

Ahh, excellent point. I didnt really know too much about the operation over there other than my experience from making a couple purchases online. Thank you again for your help.

[WhiteWolf McBride]

JD:

One critical thing if using one Rx (receiver), multiple ESCs (electronic speed controls), and any number of batteries:

Most if not all ESC's contain a BEC (battery eliminator circuit) so you don't need to run a Rx battery, right? This means the battery that supplies your main power (drive motor, and all accessories like lights, sounds, etc.) also supplies the Rx, right? So, you DONT use an Rx battery pack.

Some guys want to so they don't loose control of their model when the battery goes below about 5v, and the Rx cuts out. They plug it in, and watch their ESC and/or their Rx smoke. WHY? Because the BEC in the ESC is supplying voltage as well. They conflict, and poof, your Magic Smoke is loose!

That extra wire (usually red) in the three that go from the ESC to the Rx (black is ground, the other is the signal). You want to unplug this wire's plug from the connector, and then put a bit of insulation over it. Some cut the wire, but its a pain to patch it later. Now the ESC is not supplying power from the main 7.2 pack.

Now, multiple ESC's... you need to do this trick on all but one of them, or they ALL try to supply the Rx with power, and you end up with loose Magic Smoke again (or ALL of them if you want to run a separate Rx supply.

Make sense?

And yes, you CAN use multiple 7.2 packs connected with a Y-connector, just be sure its a Parallel type connector, so you are adding the amperage, NOT a Series connector, and end up with 14.4 volts.

That make sense too?

WhiteWolf
- with a tip from the tankers.