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View Poll Results: Ignition & Fuel system combination
Carburetor with one electronic ignition and one magneto 25 12.89%
Carburetor with two electronic ignition 24 12.37%
Fuel injection with one electronic ignition and one magneto 39 20.10%
Fuel injection with two electronic ignition 82 42.27%
No electronic ignition 24 12.37%
Voters: 194. You may not vote on this poll

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  #1  
Old 08-07-2017, 08:14 AM
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Default Electronic ignition and fuel systems (poll)

I've always been curious about the different combinations of fuel and ignition choices builder / owners make with their airplanes.
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Old 08-07-2017, 08:23 AM
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Quote:
Originally Posted by humptybump View Post
I've always been curious about the different combinations of fuel and ignition choices builder / owners make with their airplanes.
One thing left off the poll would be dual electronic ignition and dual mags.

The LASAR and G3i systems are both dual electronic with dual mag backup.
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Old 08-07-2017, 08:40 AM
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Another choice which is gaining momentum is dual EFI and EI, such as the SDS system I'm installing.

As a fallback choice, my last 3 airplanes have been injected (Bendix) and dual EI.
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Old 08-08-2017, 05:00 AM
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Interesting results thus far with 45 respondents.
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Old 08-08-2017, 05:16 AM
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My choice is "other" - - full electronic fuel injection and ignition. (SDS).
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Old 08-09-2017, 11:40 AM
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The sample set is not very big (81 data points at present) but the "trend over time" has been interesting to watch.

The general trend of responses has been 2:1 in favor of fuel injection vs carburetor. On the carburetor side, the responses have trended 2:1 in favor of a single EI while on the fuel injection side it has trended 2:1 in favor of dual EI.
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Old 08-09-2017, 12:29 PM
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A comment on your trend observations, Glen... It's been my observation that some of those who tend to operate from "less improved" airstrips and over less populated land often do their systems planning with independence in mind. The carb guys (I'm one) keep a mag because the combination of carb and impulse-coupled mag means one has the ability to get started while out in the boonies, long after some idiot left the master switch on and made hand propping a necessity. I've gone one step further by installing a manual priming system, again to avoid any dependence on the flow of electrons.
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Old 08-09-2017, 12:54 PM
AttackPilot64 AttackPilot64 is offline
 
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Dual EMAG PMAG with Fuel Injected engine plus GAMMI injectors = one smooth fuel efficient machine!
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Old 08-09-2017, 01:05 PM
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Quote:
Originally Posted by Canadian_JOY View Post
A comment on your trend observations, Glen... It's been my observation that some of those who tend to operate from "less improved" airstrips and over less populated land often do their systems planning with independence in mind. The carb guys (I'm one) keep a mag because the combination of carb and impulse-coupled mag means one has the ability to get started while out in the boonies, long after some idiot left the master switch on and made hand propping a necessity. I've gone one step further by installing a manual priming system, again to avoid any dependence on the flow of electrons.
That's cool. I would like to know more about how you accomplished manual priming.

Bevan
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Old 08-10-2017, 06:51 AM
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Quote:
Originally Posted by Canadian_JOY View Post
A comment on your trend observations ...
I don't think I'd ever be able to Devine the "why" in the data. With such a small sampling - currently a little over 100 out of thousands - there are definitely too many variables to make many scientific observations.

I also think there is a case for the "observer effect". While the poll is not quantum physics, the fact I commented about observed trends has changed those trends.

Currently, fuel injection is almost 3:1 compared to carburetors. The fuel injection responses have surged. The carburetor data is still trending 2:1 in favor of a single electronic ignition while fuel injected installations are narrowing a bit to 1.7:1 while still favoring fuel electronic ignition.
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