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Old 07-05-2011 | 07:41 AM
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CGRetired
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From: Galloway, NJ
Default RE: Understanding Electronics Better...

Well, simply asking for that information would suffice. I know that someone, including me, would provide that to you. The point here is to try to keep things simple. We do get a lot of youngsters that don't have a clue about such things, and it just goes to make something that could be somewhat complicated, almost impossible to comprehend.

I don't object to being technical when technical is called for. In your case, you asked a simple question about understanding electronics, but what I read from your request is what do I do on an electric powered plane to get what I need to fly it, which is a frequently asked question that normally calls to start with a simple answer with information that you can easily use, ie. weight the plane with everything taken into consideration, apply the "rules" then go out and buy what you need.

The sample I gave early in this thread was the Brio 10 electric pattern plane. But, suppose you have a plane like a Sig Little Something Extra, which was designed to be a glow powered plane but want to fly it with electric power.

Well, that would involve getting the weight of the plane, decide how you want to fly it (trainer, pattern, 3D, and so on), see what wattage you need, let's say you want to use a 3 cell LiPo.. that's 11.1 volts (nominal) so that part of the watts determination ( Watts = Volts X Amps) is a no-brainer.

Next, you would take the watts you need for, say Sport flying, mild aerobatics. That's 90 to 110 watts. So, at 110 watts, 11.1. volts, you will need an ESC that can supply 10 amps of current ( I would go higher, say to 12 amps) per pound of aircraft. If it weighs in at 2.2 pounds (everything considered) you would need a 25 amp ESC (going slightly higher than the numbers actually show for a little safety margin). Because you don't know what motor you will use to get the weight, well, you have to do a little research on the internet to see what motors will work with the wattage you are going to consume and go with that weight. Add everything.. servos, ESC, airframe, candidate ESC and motor, and the battery pack.

No where in that was there anything technical, unless you would consider Watts = Volts X Amps technical.

That does not mean that we can't get technical, because we certainly can. But it simply means that the simple answer to your original question was simple. If you want more, then it is definitely available.

As I said, I've seen many posts that come in with information that is just plain mind boggling when It does not have to be, and this is what can push someone away from the hobby. That's all I"m saying.

Again, if you want technical......

CGr.