Lynn,
With balancing my single rotor, what would you
suggest that I allow ( percentage wise) for oil weight in the rotor - it was
suggested to me that I should allow full rotor oil weight.
This discussion suggests otherwise.
George ( down under)
George,
I certainly am not an
expert, just relaying my findings from those who do have a lot of knowledge
regarding these engines. On that note, as I have become more
involved with this engine and its’ aviation application, I find that much
advice comes from the racers. I’m certainly not knocking that either,
but sometimes you have to remind them that you’re not looking for racetrack
performance. It’s more about reliability (at least for
me).
So, I’m not saying
that leaving the ball/springs in is the only way to go. Just that it’s
not mandatory to remove them.
If I read Lynn’s
later response correctly, he seemed to indicate that in our application, this
mod would likely not make a difference.
And Lynn, if I
misinterpreted your excellent explanation of the whole Mazda warm up scheme,
please let me know.
Further, please don’t
think I’m in any way knocking the racing crowd, because they contribute
enormously to our challenge.
Bryan
Don't worry about
racing performance from the airplane installation. Nobody even dynos below
6,000 RPM. So here is a dyno sheet that is as low as I have ever seen. This
engine has a very short intake that is tuned for 9,000 + RPM. But still
respectable at even 6,500 RPM where you could use it in an airplane.
EGT probes are 3" out
from the ports.
A properly assembled
engine will tolerate an alarming amount of abuse and continue to perform
normally.
Support systems that
are common to any auto power installation are most likely to cause any
problems.
On the balance
question, the rotors are so heavy and move in such small orbits that the
weight of oil missing from one or the other is not detectible to the pilot, as
it is such a small percentage of the rotor
weight. A badly
out of balance rotary is smoother than a well balanced piston engine. In
normal operation, braking retains more oil in the front rotor, and dumps more
oil from the rear rotor, and nobody notices that. Same in a climb. Nobody has
noticed any imbalance yet. I left piston engined race cars in 1980 based on
the cost of exploded engines.
Lynn E.
Hanover
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