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mark.bitterlich(at)navy.m
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 Posted: Fri Jun 26, 2009 10:11 am Post subject: Arm Chair B/S |
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My "arm chair bullshit"?
Real nice Tom.
Two airplanes that did exactly what Pappy did had serious problems at
wide open throttle. Question Doc Kemp for his details. Next, Pappy
ran that combination for 20 hours. TWENTY HOURS. He did not complete
any kind of flight test sequence, he flew normal flight routines and had
nothing bad happen. I believe him and his report completely. And I
said that. THREE TIMES. A 20 hour flight regimen is not the same as a
wide open throttle kick butt aerobatic routine, which I do not think
Pappy performs on a regular basis, but many people with M-14 engines in
fact do. Maybe I am wrong about Pappy's flight test routine. Ask him.
Please.
I stated that if you did put one fixed and one variable timing mag in
there, that it would be a good idea to run with one mag off after
take-off, and if you did that, there would be no possible problem and it
would get you home ok. You say if anyone did that it would probably
foul the plugs and they would not work when you needed them. Instead of
me trying to explain why that is incorrect, (since I am obviously so
full of it) I will just offer you this simple test. GO DO IT YOURSELF.
Take off with two running mags, then turn one mag off. Run about 30
minutes to an hour or so, and then check your other mag. OH MY
GOODNESS! IT RUNS PERFECT! WELL IMAGINE THAT! I guess you will have
to immediately get on the YAK list and apologize to Mark for being 100%
wrong in your assumptions. Excuse me if I don't hold my breath. And
hey... Anyone else that wants to find out, go do it yourself. Turn off
one mag in flight for any time period you want to. Turn it on later and
report what happens. Right here. On the list. PLEASE!
Here's a hint. Once an engine starts, what do you think keeps plugs
from fouling? The fact that they are firing little electrical sparks?
Or might it have something to do with all that hot gas in the combustion
chamber because the OTHER PLUG IS STILL IGNITING THE COMBUSTION MIXTURE?
Ever have a fouled plug and take off anyway, only to have it work
perfectly later on? Hmmm... Wonder why that happened! Just so we can
be clear, fouling a non-sparking plug on an already running engine is
completely different than a plug that is fouled before or DURING
starting. But then... What do I know? Let me know how that test goes
won't cha? ANYONE for that matter. Remember... A RUNNING engine.
Here's another fact for anyone that is interested: ANYTHING that comes
out of my mouth falls into one of two different categories. That which
I have experienced and that which I assume. Unless I clearly say
otherwise, EVERYTHING I write on this list is based on PERSONAL
EXPERIENCE. HANDS ON. SEEN IT WITH MY OWN EYES. When it is otherwise,
I SAY it is otherwise... As in: "I am not sure, but". " I have heard
but have not seen" etc. EVERY post I make concerning something
technical ..... I always do that..... and it is NEVER "arm chair
bullshit".
Further there always seem to be people that put words into other peoples
mouths and then argue about what they never said in the first place.
As in: I never predicted any "dire consequences" (nice phrase though!).
I said it was not a good idea. I said that it was not the original
design. I said it was not a good idea to go experimenting with new
designs on an engine that carries passengers. I also said that I saw no
problem with anyone doing it on a "get it home" emergency basis. I even
offered ideas how to do it safely.
Once again, let me repeat: I DON'T GIVE A DARN ABOUT WHETHER THE MAG IS
CHINESE OR NOT!!! Russian, Chinese, American, ... Matters not to me.
It was never a matter of "who makes the mag".
Yes. I agree. Once the mechanical advance mechanism is fully open, the
timing then does not change anymore.
But you know what? The heck with all of this. Go ask a Russian Master
Mechanic what he thinks about doing this. Let me know what he says.
Oops, darn it, I already have. Guess what they said? I'll leave it to
your imagination. OR ... How about this? Why not just go ask an FAA
Inspector about doing it on ANY aircraft engine, ANY AIRCRAFT ENGINE!
Tell him some guy with the same engine as yours did it once and it ran
just fine. See what he says. Yeah, right.
Everyone knows a lot of things will "work" when it comes to making an
engine run, or an airplane fly. Some people care about doing the best
they can and are very careful about doing things that are not in the
book, that are advised against by people trained by experts on the
aircraft in question (and I am NOT talking about myself by the way) and
do not base opinions on what is safe, and what is NOT safe, on something
they read on the Internet or heard from their buddy. PRO *OR* CON !!!
I sincerely care about the many people on this list that have reached
out their hand in friendship and kindness to me, and I have tried as
hard as I can to do the same for them.
That said, let me be perfectly candid. I really do not care what you
think. Any slight feeling I might have had in that regard ENDED when
you used the phrase "armchair bullshit" to something I tried to write
with respect and tact.
Mark Bitterlich
P.S. By the way, I have more time working on airplanes than *I* care
to remember. But, I will anyway. 39 years and counting. That's what I
do for a living, and have since age 17. My time building automobile
race engines remains purely amateur. What I do on airplanes, I do as a
professional and I take strong exception to someone implying my lifes
work is "armchair bullshit".
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jan.mevis(at)informavia.b
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| Posted: Fri Jun 26, 2009 10:52 am Post subject: Arm Chair B/S |
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As far as I know (and just as you, Mark, I try to be as precise as possible)
no inspector in Europe would accept an aircraft engine with two different
magneto's. It also is out of the question having Chinese mags on an M14P.
The UK officials would not even accept a Nanchang with an M14P!
Jan
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