ORIGINAL: sandyjain
Bill I never said That I do not use an optokill - I said I use an RcEXL one.
I use Life batts. That have 2 Futaba /JR type plugs. 1 goes to the Rx switch and the other to the CDi switch.
The out wire of th CDi switch has the diode.
The diode wire of the switch then goes into the optokill and then onwards to the CDi.
Hence the battery is isolated from the CDi and so is the Rx.
2.4 Ghz systems are inherently less prone to interference.
I use the 1 battery system for only upto 20cc engines/ models. Beyond 20cc or models with digital servos, should be run with 2 batts. May be even redundant/ 2nd battery for the Rx.
In your message dated 8/10/12 you did not mention any type of optokill...
"A dedicated battery is not necessary at all. I run my smaller gassers - dle20 - with just 1 batt feeding the Rx n CDi.
What I like to do is to have 2 swithes....1 fr Rx n other fr CDi. In the wire fom the switch to the CDi I attach the diode.
And yes this works for Life only. for LiPo you will need more diodes, in which case an Ibec may be better.
But I will highly reccomend Lfe for CDi as they give a constant voltage over 80% of their life."
In the end I was just wondering if there any RF issues doing that. I know there are the types who HAVE to use all the new devices just because.
I prefer the KISS system anytime I can!
I do not fly 2.4 ghz (which is why I was asking about RF noise) and I see no reason to change at this time. And with some club members making the switch, there is even less reason (for me) to spend the $$. I have been flying since '87 and only crashed twice due to radio issues. Both times my fault, not the radio itself. Crashed a lot of times over the years actually! lol
As I'm not aiming for a 3D type plane for my 20, i will probably run separate batteries and not worry about the extra weight. On my DLE30 powered Cap, I plan on running two batteries for the RX and one for the cdi.
I do like the idea of using a Life battery with a diode (or two) for the voltage drop. Nice and simple!
Thanks,
BIll S.