REFLECTOR: N4PE "The Ape" First Start

Laurence Coen lwcoen at hotmail.com
Mon Feb 27 10:40:58 CST 2006


Brian,

Did you mean to say the MAP was 28" not 28 PSI?  My carbureted Slick mag 
Franklin/IVO turns 2500 RPM static.

Larry Coen
N136LC

----- Original Message ----- 
From: "Douglas Holub" <doug.holub at comcast.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Monday, February 27, 2006 8:23 AM
Subject: Re: REFLECTOR: N4PE "The Ape" First Start


> Congratulations Brian!
> ----- Original Message ----- 
> From: "Brian Michalk" <michalk at awpi.com>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Sunday, February 26, 2006 11:23 PM
> Subject: REFLECTOR: N4PE "The Ape" First Start
>
>
>> Ten years ago, on Valentines day our kit arrived.  Today we had the first 
>> engine start.
>>
>> I can now say I'm the proud owner of a running Franklin/IVO combination.
>> I've got two electronic fuel injection systems, electronic ignition, and 
>> a magneto.  It's turbocharged with intercoolers.  I fabricated the 
>> stainless steel intake and exhaust manifold from scratch since there were 
>> no other working examples to copy.  I worked out the math on the 
>> injectors, turbo, fuel pumps, and all of the components that are simply 
>> not available in a package.  I had a lot of concerns over whether it 
>> would work or not.  I watched other people's failures and tried not to 
>> make the same mistakes.
>>
>> I am very pleased that the large turbo breathes quite well with the open 
>> waste gate.  In fine pitch, I am able to make 2250 RPM.  Deeter's 
>> Franklin will do 2400RPM static.  The MAP at 2250 was 28PSI.  I 
>> calculated I would lose a little less than 1PSI across the intercoolers, 
>> and didn't know what the drop would be for the turbo.
>>
>> The engine starts like a dream on the Autronic electronic engine 
>> management system.  I did have some problems though.  I completely messed 
>> up the magneto wiring.  I have no idea how I did it, but once we got that 
>> problem sorted out, the engine ran like a top.  I am leaking oil out the 
>> turbo, and need to look at the scavenge pump.  I might have it hooked up 
>> backwards.  During the high power runs we needed to tweak the mixture 
>> because it was originally too lean for the stock setting. The power 
>> control is a single knob affair.  The Autronic calculates all of the 
>> mixtures for operation.
>>
>> I installed a Linksys router in the airplane that has been hacked to run 
>> Linux.  We logged the engine data to a laptop via the wireless 
>> connection. For the first flight we intend to get telemetry via 802.11, 
>> and maybe even put a webcam on board.
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>
>
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