RE: Electric B-17?
gaumflyer, I also use a separate battery to power the receiver on my B-25 and Bonanza. The Bonanza has retracts and it is a good idea to power them from a separate source than the motor battery. I did not want to get into that in my discussion as I was just try to give Mathew the basics. That is more of an advanced topic.
Once again Mathew, that is a great looking plane that you should be proud of. Any other questions, just fire away...