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Hi Steve,
If you install Tracy's injector disable circuit, the cold start
function is activated when one set of injectors is disabled. The
result is that nearly full power is available. If you have injector
problems, the engine performance will be better with the bad one(s)
disabled and cold start active. Actual results will depend on what
injectors are used.
On my last flight disabling the primary injectors allowed me to land on
at the airport instead of 15 miles from the airport. I would like to
tell you why I lost power and disabling the injectors restored power
but the poor landing at the airport resulted in no further engine runs
for testing, at least so far. I would highly recommend installing the
injector disable circuit.
Bob W.
On Sat, 24 Nov 2007 13:14:45 -0500
"Steve Brooks" <cozy4pilot@gmail.com> wrote:
John,
I certainly don't disagree that measuring everything that you can, has an
advantage. Since I change my primary fuel filter each year during the
conditional inspection, and the filter on my secondary pump, every other
year, I haven't had an issue with a plugged filter. But none the less, I
would like to know what it is. It's just a matter of priorities at the
moment.
As far as a set of injectors not powered, I would certainly think that would
cause a real performance issue on full power.
Steve Brooks
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of John Slade
Sent: Saturday, November 24, 2007 9:39 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] hard starting
Steve & Others,
We all set up our engines in such a way that makes us feel secure, and
no criticism intended, but I wanted to emphasize a couple of points for
other readers....
You mentioned that you don't switch the injectors separately. Switching
off one set of injectors is a standard part of my preflight, and it has
saved me from taking off with one circuit down. Also you said that you
have no fuel pressure gauge on the panel. The fuel pressure reading on
each pump is also part of my pre-flight. During the first few hours this
helped me detect a blocked filter and a bad pump ground, and once helped
me solve rough running in the air.
Extra switches and dials in the cockpit certainly increase pilot
workload, but they sure help with problem diagnosis prior to and during
flight.
John Slade
Turbo Rotary, N96PM
96 hrs.
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N93BD - Rotary Powered BD-4 - http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation - http://roblinstores.com/cables/
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