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Good thoughts Mark. I think that I have not been going full rich at cold start up....perhaps out of fear of flooding it. Of course I suppose I could just as easily flood it by over priming. Your
way is correct as I remember it from Tracy's manual. Like I said, I still need to develope the proper techniqes now that I am hopefully moving past some other concerns.
Yeah, OAT may be the difference. It does get pretty hot on the ramp. Usually I am able to get past 6000 without too much probems.
No, I have not done any high speed taxi runs. Just some "go-kart" runs around the ramp. I do not have to contact EFD ground or tower for that and I aways assumed I should have my airworthyness signed off before
I take 'er out to a real runway <g>
Other thoughts welcome.
All the best,
Chris
From: Rotary motors in aircraft [flyrotary@lancaironline.net] On Behalf Of Mark Steitle [msteitle@gmail.com]
Sent: Thursday, September 17, 2009 7:46 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Progress report from Houston
Chris,
I know that each engine/installation is unique, I usually don't have to prime even once when cold (summertime), and never when hot (doesn't need the extra help igniting the fuel mixture). However, I always go rich on the mixture knob (full rich for a
cold start, 2-3 o'clock position for a warm start). It always starts within a few seconds of cranking. I would try priming less when hot and see what happens. Also, I would check your idle mixture settings. If it takes that much priming, it sounds like
it may tuned be a bit on the lean side.
My take on your static rpm question is that OAT may be the cause of the variations. Sounds like you've got enough to get off the ground. Have you done any fast taxi runs? You've got plenty of runway.
Mark
On Thu, Sep 17, 2009 at 7:15 PM, Chris Barber
<cbarber@bellairepolice.com> wrote:
Oh, also, I am having a bit of trouble to get it to start when hot. Seems to crank right up when cold, but I seem to have to hold my tounge just right to fire it up when hot. I think it MAY have to do with the different mixture and priming needed when
hot. It seems to like about six to ten prime shots when cold, but may like more when hot....not sure yet. Annoying though.....especially when trying to show off to the curious....who heard the engine a few minutes ealier <g>
Thanks.
All the best,
Chris
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