ORIGINAL: spaceworm
ORIGINAL: ovationdave
I have a G-38 that was on a Giant Super sportster that lost the muffler when I was flying due to vibration. After the muffler came off, with no back-pressure on the engine, I couldn't get it to idle down (I set all my planes up so I can use the throttle trim to kill the engine), even with the trim all the way down. So I circled around, and killed the engine with the remote switch. I have a simple set-up to do this, as I mounted a radio-shack switch (cheap) to the side of a servo, and one of the big round servo wheels on the servo (it looks like a cam of sorts), all set up on my gear switch so when I flip the switch, it rotates the ''cam'', flips the switch, and grounds out the magneto. Its a simple setup that works fine, and even though I use it as my main kill switch (in addition to my outboard mounted grounding kill switch, and my throttle setup), so I have 3 potential ways to kill the engine. I do that with all of my gassers now.
Dave
Do you have the radio's failsafe set so the cam operated kill switch goes to the engine kill position when you lose signal? What happens when you lose control due to battery failure, does the switch go by spring return to the kill position? Thanks for your answers.
Regards, Richard
No, but its an interesting thought. I take the spring off of my gassers. I could be wrong, but have you ever tried to move a servo by hand when there is no power applied? I would have to think that if I lost power, it would take a pretty strong spring to pull that servo back to the idle position, and with that much force pulling on my servo all the time, it seems like a lot of current drain for a servo to have to exert whenever i have my plane on. As far as battery failure goes, I don't have a plan for that one. But I probably should. Everything would just stay in the position it was in when the battery failure occured. I think that redundant battery power is the best backup for this, but for all-out failure, no, it doesn't kill the engine the way I have it set up. I would have to think about how I would
want the system to react in that case too. I have never had a battery failure that I am aware of, and with 2.4, I am less worried about signal. But you can only prepare for so many situations