Hi Paul,
I did my first taxi test last Friday. I taxied for about 30
minutes and it didn't even get close to overheating. Of course, the
Texas summer isn't here yet, so we'll have to wait and see how it
does
then. Everything worked as intended and it was great to experience
my
little creation moving under its own power. First flight is still a
month or so off.
Thanks,
Mark S
Congratulations Mark. Your 3 rotor engine installation looks great.
Got any later pictures?
Paul Lamar ...No rotor no motor.
Congratulations Mark.
If you don't mind a bit of critique...
I notice you have some long runs of stainless braided hose which look
poorly
supported. This stuff acts like a saw on aluminum with the a bit a
vibration. Especially where it loops between the cooler and the PSRU
it
would appear that it could saw on the Al coolant system parts.
Have a read up on the firewall forward section of AC 43 -13
Properly supporting lines hoses and wiring firewall forward is
something
Cirrus does very poorly. The SR22 I did an import inspection on looked
like
it was asking for all sorts of sensor harness problems in a couple of
hundred hours.
Regards,
Mark Wrathal
Hi Mark,
Not a problem, I welcome any constructive criticism. Sometimes
pictures
can be deceiving. As in the line going between the oil cooler outlet
and the psru inlet. It is a -4 and only about 6" long and not even
close to touching anything else. Originally, it was aluminum tubing,
but I didn't feel comfortable with that, so I changed it to braided
SS.
Some of the other lines may need to be tied down better. I'll look at
that again tomorrow. If you look closely you will see that I used
rubber snubbers wherever two lines crossed. An old airport bum showed
me that trick (using a piece of heater hose and run a tie wrap through
the center and around both lines). It keeps them from rubbing and
also
from moving around and touching against anything else. I used some
ADEL
clamps in various places to support hoses and keep them from touching
(such as the line going past the alternator, or the long one going
from
front to rear over the top of the engine. It has two clamps (maybe it
needs two more?).
Thanks for mentioning this. I'll look at it again with a more
critical
eye.
Mark S.
Hi Mark,
Question for you: What didn't you like about using aluminum/SS tubing?
Bruce Belligan
Bruce,
For years now Paul has preached about the fatigue characteristics of
aluminum. I didn't trust it, especially since it is subjected to
100psi of flammable liquid.
Mark S.
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