Petrol Engine Ignition cut

[Snorbitz]

I've been asked by a friend who has just bought a petrol engine for his plane if there is some way he can cut the ignition to his engine from the transmitter rather than having to do it from a switch on the model itself. He has suggested a mechanical switch close to the throttle servo but i would think an electronic alternative would be better. I just wondered if anyone had done this before and could give me a few pointers i could pass on.

Cheers

[Ultymate]

I've flown petrol for a long time and personally never bothered with this facility. It is however becoming more common and there are many opto-isolated systems, i.e. no electrical connection between ignition and radio, which by utilising a spare channel allow you to switch your ignition on and off from your T/X. Another means of stopping your motor mid flight should your throttle servo fail (which is usually peoples main worry) is to employ a servo on choke so that if needed the choke can be applied and the motor stopped by flooding it .

[Ultymate]

Here's a link to one such unit Smartfly ign

Hope it helps

[Snorbitz]

Cheers Ultymate......i was just scanning the tinterweb for just such a thing. Many thanks for your time.

[Clive Moore]

 Hi Paul,

I use the switch from SM services Petrol engine on board switch. I've put the link below. Its been trouble free every time and very easy to install.SM services are realy helpful if you tell them your set up and what you want to achieve.

Good luck

Clive

 http://www.smservices.net/acatalog/sm20.