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Firewall Forward / Props / Fuel system Let's talk engines, engine mounts, props, and plumbing. * Note * For specific questions about 2-Strokes and Auto-conversions, please see those areas.

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Join Date: Feb 2004 Location: Troy, Michigan Posts: 308 Dust is offline
April 12th, 2004, 02:27 PM
Electronic Engine Controlls

Anyone know of a programmable unit that i can use for ignition/injection/boost/propellor controll?

enjoy the build

dust

maker of foam, fiberglass and wood dust and shavings, one day a plane will pop out
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Join Date: Feb 2004 Location: Troy, Michigan Posts: 308 Dust is offline
April 12th, 2004, 06:35 PM


I think i am looking for a "hot rod" unit that i can mess with, i know hot rods don't have props, but they do have the other items and maybe there is an extra output that i can program for the prop

enjoy the build

dust

maker of foam, fiberglass and wood dust and shavings, one day a plane will pop out
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Join Date: Oct 2003 Location: Northern NSW Australia Posts: 824 StRaNgEdAyS is offline
April 12th, 2004, 11:19 PM


Go check out some of the speed shops in your area. An automotive unit should do the job nicely, there are many avaliable, I've been out of the game for a few years now, so none immediately spring to mind, but it really depends on how many bells and whistles you want on it, and the ratio between your arm length/pocket depth.
I'd say at a minimum you will be wanting a decent EMS and a boost controller. A turbo timer is not a bad idea, as it won't allow the engine to be shut down until the turbo has had time to cool, but that means a little more time in the office before you set foot on terra firma again, as I doubt you'd want to walk away from your plane with it still idling.

edit: taipoh aliert!

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Last edited by StRaNgEdAyS; April 12th, 2004 at 11:21 PM..
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April 12th, 2004, 11:50 PM


Thought about that heat thing and saw an aux oit pump to use after shut down. these aircooled engines DO NOT like to ground run

enjoy the build

dust

maker of foam, fiberglass and wood dust and shavings, one day a plane will pop out
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April 13th, 2004, 12:06 AM


Quote:
these aircooled engines DO NOT like to ground run
ahhh yes, This is true. The auxiliary oil pump sounds like a good idea, but it might have limited cooling efficiency on an oil cooled unit such as the RayJay if the shaft isn't rotating (mind you the shaft does not rotate much at all on a RayJay at idle due to the sleeve bearings' resistance). In the end it is going to come down to a trade off between turbo life and engine requrements. Have you considered a cooling fan attached to the prop shaft behind the cowl to draw extra air past the engine? That may help alleviate any ground running problems.

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Last edited by StRaNgEdAyS; April 13th, 2004 at 12:10 AM..
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April 13th, 2004, 12:32 AM


I would probably have to attach two leaf blowers to do the job, hey, wait a minuit, thats what i am planning to do on the ground running testing and programming/maping??

enjoy the design

dust

maker of foam, fiberglass and wood dust and shavings, one day a plane will pop out
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April 13th, 2004, 01:41 AM


Typically the kind of EMS you will be looking for will be usually installed on street racers. It will have seperate configurable settings, usually used to switch the engine between street driving, and race driving modes, e.g. street driving, ciruit racing and drag racing.
You will only be able to program the MSL maps (if you are at about sea level) and only rudimentary mapping for altitude while on the ground. The rest of the mapping for your altitude settings will have to be done once you are airborne, otherwise they will be incorrect, (unless you have a large enough barometric chamber to fit either your plane or your engine into )

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April 13th, 2004, 02:13 AM


Ok I've had a brief look thru my stuff, and a couple stand out from the crowd. The engine management systems (they're actually referred to as ECU's) by MoTeC and Advanced Engine Management's Wolf 3D systems look like the way to go, they have a multiple of configurable inputs, and although I'm not 100% sure how they would deal with dual ignition systems (although some of the Nissan CA20 performance engines has a dual ignition system on them), I am pretty sure they are up to the task.

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April 16th, 2004, 10:15 AM


I've been looking at several PCMs. Specifically, ACCEL-DFI, AEM, EFI-TECH, F.A.S.T., HALTECH, and MOTECH.

The Motech unit has my nod so far, but I've only been looking at the specs for 2 days...
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April 16th, 2004, 06:02 PM


What about rotaryaviation.com
Tracy cook has many of these flying
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April 16th, 2004, 06:23 PM


This my good sirs and madams is the strength of the internet, real people with real knowledge helping real people.

I'm going to have one heck of an airplane

enjoy the build

dust

maker of foam, fiberglass and wood dust and shavings, one day a plane will pop out
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April 16th, 2004, 09:26 PM


I considered Tracy's, but it didn't make to the short list.

Remember, I test these for a living.

Talk to me on plane day.

Mike
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