ORIGINAL: TimBle
ORIGINAL: dirtybird
Nothing is said about what frequency you are using. I wouldn't try this on a 72mhz fm system.
It will probably work OK on a 2.4 system but I wonder if its worth the 2 oz it saves.
An ignition system pulls a heavy current for a short period of time while it charges. The average current it pulls that you read on a voltmeter is no indication of what it takes to charge. It may be several amps for a short period of time. This puts a heavy strain on the regulator. It may not be able to supply what the ignition system really needs resulting in a weak spark at high RPM.
Its simply not a good idea.
really.... must be murder on those large scale planes with their 220cc engines running off a lipo through a power box and regulator..
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An aircraft running a lipo with a power box and a regulator is a very poor idea indeed. There are a lot of unnecessary parts to fail there. I notice that the people that do that resort to redundant systems as a matter of choice. Notice the Smart Fly regulator has a fan to keep it cool. What a power waster that is.
There are a number of world class fliers in the club I belong to. A lot of them choose a simple set of A123 batteries with a diode to reduce the voltage on the ignition. Of course they too have redundancy but their overall reliability is much better.