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Date: Wed, 14 Dec 2005 12:44:57 -0600
From: Perry Casson <pcasson@sasktel.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Starting a rotary with EC-2
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I don't have Tracy's firmware update with the "Prime" function but if 
you have a injector disable switch you can turn them off/on about 10 
times and this along with your 6 steps works well to about -5 C (20F) 
for real cold by Canadian standards I've resorted to a short squirt of 
lubricated Ether, thats worked down to any temp I've wished to go flying 
in (~-15C/-4F)

Perry


Mark R Steitle wrote:

> I was curious as to what techniques are used to start an EC-2 equipped 
> rotary in very cold (below 32* F) weather.
>
> I know some use the EC-2’s Program Button to prime the engine, 
> pressing as many as 20 times before attempting to start the engine. 
> I’m curious if this is something that’s always done, or only when very 
> cold. How do you know how many times to hit the primer button? Trial 
> and error?
>
> Here’s the technique I typically use for my 20B with 550cc injectors 
> (but haven’t tried it in really cold weather):
>
> 1) Turn On Main & Aux. Battery contactors, fuel pumps, EC-2, injectors 
> and coils,
>
> 2) turn “Cold Start” ON,
>
> 3) Turn mixture knob full rich,
>
> 4) Hit starter until engine fires,
>
> 5) Within 3-5 seconds, turn off “Cold Start” (leave mixture knob full 
> rich)
>
> 6) As engine warms, slowly bring mixture knob to 12 o’clock position.
>
> This seems to give the most repeatable starts (for me), and I’m afraid 
> to tinker with success. However, if there is truly a better starting 
> procedure, I’m open to suggestions.
>
> Mark S.
>