How many Batteries are NEEDED? - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 08-25-2016, 07:38 AM   #11
Mike Sebastien
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Join Date: Sep 2005
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Re: How many Batteries are NEEDED?

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Sorry don't smoke. Found a picture on the net that gives a pretty good example of the different circuits.
As for modern electronic ignition system's they are pretty much bulletproof, but they have to be taken care. Mount the box in foam and make sure the metal spiral braid is nor chafed or worn. I usually wrap mine in plastic spiral wrap to prevent chaffing as you may get RF leaks

As for a power source you can plug a battery directly into the ignition box but then the only u can shut down the engine is by closing the throttle. Not for me.

Next choice is to install a remote kill switch that is controlled by the TX. It will have a plug to install a battery, AND one to the RX and a third for output to ignition box.

Next choice is a Ignition Battery elimination circuit. (IBEC). These are used in conjunction with power distribution board. The battery connector is plugged into a unused port and it just supplies voltage. The other is plugged into the channel that you choose to to control the ignition. Normally these are optically isolated to prevent RF feedback. This is my favorite setup. You only need one switch on the power distribution power and it shuts down the whole system

Here is description of my setup on 40% Carden Extra 260 with a twin ZDZ 160. Also running 8 hi speed digital servoes. Engine ignition system is plug into the power distribution board through a IBEC. I also have LED telling me when the ignition is live. Also have two 2 cell Life batteries 4500 mah each which are plugged directly into the power distribution board in PARALLEL. I can adjust the max voltage on the power distribution power and I have set that 6 volts. The system has worked great with no evidence of brown out. The batteries are about 5 years old with about 300 flights on them. After 4 flights I usually putting back 2000 mah into the batteries. The only thing that concerns me is one battery takes 1500 mah to charge and the 500 mah. I am guessing the battery has a lower resistance and supplying more current. Hope that helps
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