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Old 05-18-2007, 12:31 PM   #25 (permalink)
Kiwi
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Default Re: New series Smart-Fly Power Expanders

WHOOOO!, Looks like I was away for a day or two and missed all this so I will do my best to answer. Robert is at the Joe Nall (I am not jealous much) so he wont be in here to help me if I get it wrong until next week.

Hybris, Your question is easy to answer first. The ignition cut off is fiber optic. The battery pack and receiver from the Optical transmitter(thats built into the board) are mounted up near the engine some place. The transmitter on the PEX board on lt sends a light signal up a plastic tube and triggers the switch. There is no hard wiring at all back to the PEX. Its all done with smoke and mirrors. The regulator you see on the board is not the ignition regulator. It is the main power regulator for two battery packs. That regulator is feed from a Battshare system as well to keep both packs evenly discharged.

DAN, GREMLIN I 'm sure FROMECO can make a hybrid pack but I dont see any real advantages in doing that as the battshare is really only a battery balancer. It drags current off the highest voltage pack until they are level pegging then it draws them down evenly. If Kurt and the guys made you a pack with two power leads it would basically be doing the same thing I think.

Caurimare Please dont misunderstand my comments regarding the turbo reg. For a 100cc application a super reg is plenty. That is what is built into the new PEX as well. Both these new boards are designed for a maximum sized model of 100cc. That assumes a plane with about seven to eight medium duty servos. 5955 and the likes. The super reg can handle something like 15 amps continuous if it is cooled properly. Robert has been extremely conservative with the ratings on his regulators so they wont fall over on you at 7 amps. I have tested them and have some new ones in transit to do some testing and show you all what sort of punishment these regs can take. Hang in until they arrive and I will see what sort of smoke we can produce with them.

Guys I'm writing this with a coke in one hand and a sandwich in the other. If I messed up here with any information blame it on the sandwich please. Its too good to put down.
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