I second that. THE BEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!

here is a link to the new dle 111 running http://rcuvideos.com/video/Fokker-DR1-13-scale# sweet engine dl is here to stay come on with the 160 only have to put two 80 together .

That's the coolest Fokker I ever saw. Especially because you are actually doing aerobatics. Nice.

Too cool!

what brand ignition kill are you guys using

I've got three from 42-percent-products.com and they work great for me especially at $32.95 each

Hope this helps,

Jim

I saved my $32+$30 shipping and bought extra 23x8 props for my Yak54 - there is no need for optic kill switch IMO.

Well, I've seen two airplane with the engine that went to full throttle and no way of killing the engine. One was damaged slightly while trying to land it the other one destroyed itself from highspeed flutter before they could get it on the ground. $33.00 dollars is cheap safety insurance if you ask me. I won't fly a gas plane without one.

Suicide to fly w/o opto kill switch. Power failure = plane going wild.

This one is programmable and the electronics are 100% sealed. http://www.electrodynam.com/rc/EDR-107/index.shtml

And for the people using an A123 (1100mah good for 100+ minutes on a single cylinder engine), put a 1N400x (1 A) or 1N500x (3 A) between the ignition switch and the kill switch for an average .7 volts voltage drop, where x is any number from 1 to 9.

How many of you guys use the dies for drilling your props? I think they are about 22 bucks, But I am not sure how well do they work? Thanks Eric

I have heard good and bad on the 42% products,so i am considering it, just making sure i wasnt missing anything on kill switches

Well, it seems Ive been suicidal for a long time then.

Power failure? If the plane goes thru a power failure, cutting the engine would be the least of your worries. If the ignition system has a power failure, you already have a dead stick in your hands.
I have seen my fair share of mis-used opti-kill stuff, and alot of optic-killed engines by mistake, because ones fingers unintentionally touched the "kill switch" - normal cut-off wouldnt kill the engine if its above idle. So unintentional pressing would save your plane from having an unexpected deadstick. Ive been flying planes for a long time, never needed opti-kill. For me, Its just another thing that could fail. (just like a power expander)

The simpler, the better.. (IMHO)

Keep it simple and stupid,

The more electronics you have on board the more problems you will have, Keep in mind that if your power supply consist of battery rx and servo that is all that could go wrong, If you have a plane that cant handle full throdel and hi speed than you have excided the plane structural design or did not build it correctly.

I totally agree to keep it simple except for that extra opto kill switch. A power expander is located before the receiver(s) and if it fails, everything else fails. Same for redundant battery systems. Your engine's ignition is powered independently though.

Only at the field I'm currently flying at for 6 months or so I have seen a few gassers and jets gone wild. A friend of mine w/ his 35% Edge for example. He used a redundant voltage regulator and 2 LiPo batteries but it wasn't so redundant. It drained one battery, lost power to the Rx and servos but the engine kept running. He was lucky the plane crashed in a lake a mile away not far from a populated area.

Some day we all experience an electrical failure if you like it or not and once that happens, it's good to know your plane can't fly into a crowd w/ the throttle wide open.

The lipos and regulators aren't keeping it simple

Correct. So it would be a good thing if also those people use an ignition opto kill.

I know we have a vested interest as well are a dealer for 42% here in Australia, but we have sent out around 800+ of the opto-kills that 42% make (maybe more, Ive lost count now), and only had faults with about 10. And these where DOA (ie would not switch on), not failures in the air, so , so far proving reliable.

Ken from 42% also provides lifetime warranty on Opto-Kills, including replacement/repair if they are damaged in a crash. We even had a customer wire it up with reverse polarity with some of thier own home made leads and blow one up, and he still covered it/replaced for them.

Any qn feel free to pm or email me about them.

Cheers

Scott
DL Engines AU

Guys help me out a second, the opti kill needs to plug into a spare channel on the rx rite?

Yep. Sort of like retracts.... On/off. With one additional feature that if power is lost to the rx it also would turn off the engine.

Yea ive been thinking about getting one, the only thing is that I dont have a open channel on my rx. Is there another option for me?

Yes http://www.electrodynam.com/rc/EDR-107/index.shtml its on/off position is programmable.
You can use a Y-cable on the throttle and either use a programmed switch or the sub trim on your radio to set the throttle position to zero = ignition off, just below idle = ignition on.

Why wouldn't a choke servo serve the same purpose? If you have a need to kill the engine in the air, simply hit the choke switch. Does the opti kill still work if you lose receiver power or radio signal? Even in that case the engne should go to fail safe which could be set at below idle and shut down the engine if you remove the idle screw.

The choke servo could serve the same purpose IMO. But what if the receiver fails? In that case the opto kill switch disconnects the power to the ignition. The receiver's fail safe function only works if the receiver is functioning properly of course.

Yes the optokill will disconnect ignition power if the rx loses power and/or valid rx signal, It does also recognise failsafe, so if you set failsafe on the channel it is plugged into to hold, and the rx still has power it will keep the ignition live/motor running.

Failsafe still needs power to to rx to work, so choke set to failsafe wont stop the engine if your rx has no power. Choke servo will only work if you have functioning rx

With Opto-Kill no power to rx and the ignition is killed.

Many people dont run choke servo either, and just go with a manual setup, so a throttle servo or linkage failure, jam etc can end up with a motor running with no way of stopping, other than making a lawn dart of the plane, or flying circles for some time (if you still have control)

Cheers

I use the smart fly optic kill. Plus I can kill it thru the choke servo and also by closing off the throttle . I think I have all the bases covered.
More to go wrong Overkill ya say ???? Well maybe but the extra time and money it costs is well worth the piece of mind I have while flying.