REFLECTOR: Goose Repair Update (Engine Run)

[Brian Michalk]

I want to talk to you.

What are you using for cranking timing, and post start enrichment?  And 
at what temps?

On 3/21/2011 10:14 AM, nmflyer1 at aol.com wrote:
> Brian,
> I appreciate the update... Good work. Keep us in the loop!
> Kurt
>
>
>
> -----Original Message-----
> From: Brian Michalk <michalk at awpi.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Sent: Mon, Mar 21, 2011 8:51 am
> Subject: REFLECTOR: Goose Repair Update (Engine Run)
>
> This weekend, I ran the engine for the first time since the March 29th 
> off field incident almost two years ago.
>
> It feels good to be at this point again.
>
> I modified the fuel system this time, making it simpler. I removed the 
> fuel shutoff valve, and in its place mounted a needle valve for the 
> backup injection. I removed the backup electronic injection system, 
> not because it didn't work, but because it's adding complexity for 
> these early flights. I will add it back in at a later time. Who knows 
> this manual arrangement may work so well that I just keep the needle 
> valve regulating assembly.
> I am using a two bladed prop for testing in order to get my static 
> RPM's up so that I can map out my fuel table.
>
> The engine ran well. I was able to get 2700 RPM, and calibrated my 
> mixture at 1000, 1500 and 2000 RPM all with fine pitch. All fittings 
> are tight, so no leaks. In order to increase my testing time, I used 
> two leaf blowers into the plenums to keep CHT's down. That really 
> makes a big difference. I can get ten minutes on a run, and I think 
> I'll add another blower to the oil cooler, which will let me run 
> indefinitely. In all I put 45 minutes on the engine this weekend.
>
> The backup injection was tested, and works well.
>
> The problems I need to work on is a hard cold engine start. 
> Something's not right there, and I only get a few tries per day to 
> work on it. It also runs very poorly on the magneto, so I need to see 
> what's up there as well.
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