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imac ignition - 1/18/2007 2:56:57 AM   
xxsnookxx


 

Posts: 152
Joined: 2/13/2006
From: miami, FL, USA
Status: offline 		what is the requirement as far as cutoffs for youre planes?can you have the throttle kill the ignition as well as a switch?
       Post #: 1

RE: imac ignition - 1/18/2007 3:11:52 AM   
OnTheEdge



Posts: 1166
Joined: 1/14/2002
From: Drums, PA, USA
Status: offline 		There has to be a way for the ignition to be killed from the outside of the plane. A standard ignition switch is fine. You just have to have it accessible from the outside (i.e. you can't have it under the hatch). And yes, you want to have the radio set up to somehow kill the engine from the radio as well. Throttle trim or a mix is what most guys usually do.

Hope this helps........Mark

_____________________________

Avoid zen aerobatics...when the ground........and the plane.......become as one.

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RE: imac ignition - 1/18/2007 7:06:35 AM   
SBerkheimer


 

Posts: 48
Joined: 12/31/2006
From: , CO, USA
Status: offline 		I also run a choke servo that can be used as a cut off.

Shawn

(in reply to xxsnookxx)
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RE: imac ignition - 1/19/2007 8:07:05 PM   
Dean Bird



Posts: 431
Joined: 5/4/2003
From: Scottsdale, AZ, USA
Status: offline
quote:

ORIGINAL: xxsnookxx
what is the requirement as far as cutoffs for youre planes?

can you have the throttle kill the ignition as well as a switch?


I'm not sure about a "requirement", but I've seen more than one airplane that could have been saved if the pilot would have had an Ignition Cutoff.

http://www.smart-fly.com/Products/Ignition/ignition.htm

Easy to install, light weight, and your ignition is only armed if your receiver gets the "on" signal. In my opinion, the BEST way to go.

_____________________________

www.Smart-Fly.com
www.TroyBuiltModels.com

(in reply to xxsnookxx)
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RE: imac ignition - 1/19/2007 8:16:55 PM   
exeter_acres



Posts: 6076
Joined: 9/22/2004
From: Johns Creek, GA, USA
Status: offline 		I didn't have an optical cut on my 50cc plane, but I put the EDC Optical cutoff on my 40%er


I then have it mixed with the throttle cutoff switch..... so when I flip the switch, the throttle barrel closes completely AND the optical cuts power

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I would like to earn your vote for IMAC Southeast Regional Director

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RE: imac ignition - 1/19/2007 8:20:14 PM   
Dean Bird



Posts: 431
Joined: 5/4/2003
From: Scottsdale, AZ, USA
Status: offline
quote:

ORIGINAL: exeter_acres
I put the Optical cutoff on my 40%er

I then have it mixed with the throttle cutoff switch..... so when I flip the switch, the throttle barrel closes completely AND the optical cuts power


This year, my club requires our gas planes to stop running when the transmitter is turned off. It's as easy as programming the failsafe on my Ignition Cutoff channel to be "off".

Every gas plane should have an Ignition Cutoff, in my opinion.

< Message edited by Dean Bird -- 1/19/2007 10:50:29 PM >

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www.TroyBuiltModels.com

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RE: imac ignition - 1/19/2007 9:06:11 PM   
exeter_acres



Posts: 6076
Joined: 9/22/2004
From: Johns Creek, GA, USA
Status: offline 		hadn't thought of that.... the optical is on its own channel so I can just program that one with a fail safe of off....

Great thought

_____________________________

I would like to earn your vote for IMAC Southeast Regional Director

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       Post #: 7

RE: imac ignition - 1/19/2007 9:15:58 PM   
Silent-AV8R



Posts: 1782
Joined: 3/16/2004
From: SOCAL, CA, USA
Status: offline 		There is no requirement within the IMAC rules for any kind of ignition kill device. There also is no AMA rules. IMAA has a rule and many clubs do, but neither IMAC nor the AMA require any kind of ignition kill device.

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Reality is Subjective. At least that's what I think.

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RE: imac ignition - 1/19/2007 10:28:50 PM   
OnTheEdge



Posts: 1166
Joined: 1/14/2002
From: Drums, PA, USA
Status: offline 		My mistake. Sorry . I thought there was an AMA requirement on a gas engine. Must have been a local club rule as I recall hearing about it long before I got into gas engines.

< Message edited by OnTheEdge -- 1/19/2007 10:29:21 PM >

_____________________________

Avoid zen aerobatics...when the ground........and the plane.......become as one.

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       Post #: 9

RE: imac ignition - 1/20/2007 4:25:37 AM   
xxsnookxx


 

Posts: 152
Joined: 2/13/2006
From: miami, FL, USA
Status: offline 		thanks guys

(in reply to OnTheEdge)
       Post #: 10

RE: imac ignition - 1/29/2007 8:21:42 AM   
Magne


 

Posts: 333
Joined: 3/7/2004
From: Moss, NORWAY
Status: offline
quote:

hadn't thought of that.... the optical is on its own channel so I can just program that one with a fail safe of off....

Great thought


But do you actually want your engine to stop if you have a temporary glitch?
I have experienced short time glitches (on smaller models) where I subsequently regained control of the model. If the engine stops, that may cause new problems.
I think I would want the engine to go to idle in fail safe, but not actually stop.

Magne

(in reply to xxsnookxx)
       Post #: 11

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