Congratulations on your first
flight! Many more to come!
I think you will find that the roughness
when you pull the throttle is due to the engine going lean when at low manifold
pressure and high rpm. That is an area that you can not tune on the
ground and my experience has been that a lot if richening is required on the
MAP table in this area. You can test this theory by using the mixture
knob when it happens. Keep us informed!
Where can we see the video?
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of shipchief@aol.com
Sent: Friday, December 27, 2013
1:38 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] First Flight
N89SE
December 26, 2013 marks the first flight
of N89SE. My 13BT powered RV-8, with Tracy Crook EC-2, EM-3 and RD-1a took to
the air (slipped the surly bonds of earth!) in the perfect conditions of late
afternoon, no wind, temps in the high 30s. Sun at my back for take off and
landing.
The 13BT ran perfectly during high speed
taxi testing, so I surprised myself this time when I didn't pull the throttle
at .7 take off speed. Within 5 seconds of adding take-off power, it floated
into the air and climbed out briskly. The RV-8 performed flawlessly, the engine
did too. Smooth steady power from take off thru crosswind and into downwind,
where power reduction was controlled and smooth. 1/2 flaps were added about 2/3
of downwind and power reduced again on base & final, where the engine seemed
to sound a little rough with essentially no-load, but small additions of
throttle provided reassurance of available power. A high approach required some
slipping to bring it down, and a smooth landing. However, I must have been
'covering the brakes' a little too well, the video shows a
little tire squeaking and puffs of tire smoke on initial contact. (oops!)
Left hand turning propeller is a little
different! not difficult, but caught my attention. You know this
'intellectually' but still, the first time required a few adjustments.
I'm saddened by the news that you must
sell your Delta. I hope something can be worked out so you could continue, but
if you must turn a new chapter in your life, I hope you get a good offer.