|
Al,
congrats on the good run. Now you have convinced me to install more volume
in my system as well to see if I can make things even
smoother.
Too
bad about the clogged PSRU. Before you take every thing apart stick a
probe into the inlets and outlets to see if you can find something stuck
there. But even if you do have to take everything apart it only takes a
few hours. Could be worse, you could be sanding
fiberglass.
Dave
Leonard (almost finished with new gear leg and intersection fairings..
itch itch scratch scratch)
Some further sorting out on the
engine today. The major good news/ bad news:
- I teed together the rotor
2&3 MAP ports with the rotor 1 port, and added about an 18” length of
3/8 dia vinyl hose before the EC2 port to add some accumulator volume.
Started the engine and YES; achieved smooth running at 1600 rpm with
the mixture setting between 1:00 – 2:00
position. Joy! J
Thank you Dave, Mike, Rusty. (Yes this constitutes poor experimental
practice, making two changes at the same time, but I can check that
later.)
- The joy was short-lived
because it was only a one minute run while I had the redrive drain line
disconnected. Taking the drain line off gave the first clue. No
sign that a drop of oil had ever been there. The amount of oil in the
container after the run – zippo; not a drop. I took off the feed line
and there was oil sitting in the fitting. Feeding to a container, I
ran again for less than 30 seconds, and sent more than a pint into the
container. Complete blockage inside the drive. The prospect of
removing the prop, drive and disassembly is not a happy one.
Other items:
- Adjusted calibration of temp
readings to be correct at room temp, and checked response of all senders
with heat gun. All responded normally. High temperature
calibration check coming later; I’m picking up pyrometer gun from a friend
tomorrow. Some spots of flat black paint in key places should give me
a good check – ah-h-h; when I can run again. He is also giving me a
fuel pressure guage to verify FP readout.
- Checked voltage reading,
compared voltage at pin 9 connector P3 (EM2 disconnected) with readout from
EM2. Differred by 0.1 volts. For roughly a 10’ run of #22 wire
that suggests about 0.6 amps. I don’t recall the EM2 draw, but this
seems close enough
- Tried to check the O2 sensor
output using a flame from a propane torch. Nothing. I’ll
probably try again to get a voltage reading at the sensor when I can run
again. It still gives close to full scale reading no matter what
mixture setting.
|