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A built Vario MD 900 kit (by Vario)
The real thing in UK Air Support Colours
November
1, 2009
The day has
started off with teeming rain, and the meteorological office has
forecast winds of 70mph this afternoon, so definitely not a flying
day of any form.
Did some more
finishing work on the camera ball to get it the right height, and so
that it angles down correctly when placed where they are fitted on
the prototypes.
November
3, 2009
Had some great
news from Vario today, the missing engine kit, head kit, titanium
grease etc is arriving here on Wednesday - Yeehaaaaaa, I will
finally be able to strip and rebuild the mechanics with grease etc,
mount the engine and fit the exhaust system, and get the mechanics
pod mounted into it's final position.
Once that is
done, I can start putting the final paint coats on, attach the boom
assembly, and start thinking about initial test flights. First
though I need to get the electronics to handle the blade phasing.
Right now the choice is between Skookum and Helicommand Rigid, but
there is a price differential of ~£200+ for Helicommand, but the
nice thing is that it can level the helicopter back into a hover if
you get it all wrong. Skookum simply handles the rotor blade
phasing problem.
I will wait
for the owners decision on that one.....
November
4, 2009
The RED LETTER DAY has arrived. The remaining
parts have arrived from Vario. 
So the first
task was to get the box cutter out and open the large box to see
what I had to play with now.
The results
are shown below :-
 |
Now that is what you call
an engine for this helicopter. It is a Webra 0.91
2-stroke that
can be run without any nitro in the fuel mix.
It is pretty high revving, and gives a lot
more torque than the original OS 0.70
The Stanley knife is there
to give scale
to show just how large the exhaust muffler is. |
|
Here is the engine in all
its pristine glory |
 |
 |
Larger engines need large
Starter motors,
so I elected to go for the Vario Starter,
plus the extension to poke up from
the belly to start the Webra. |
|
Several hours later, and a
lot of hard work, the motor is fitted in place, the main
gear and gearbox greased with the special Vario Titanium
grease, which is indeed VERY SLIPPERY stuff.
Check out the size of the
fan at the bottom right - that has to be running at 15,000
rpm to create sufficient airflow to control the NOTAR
tail... |
 |
 |
Well, the owner wants 2
pilots installed, so here is the chief pilot. His flight
suit is going to have to be turned black somehow as he is
supposed
to be a UK Air Support pilot. |
|
And to finish off with, a
picture of the now
complete mechanics assembly, without
the tail exhaust fan in place. |
 |
 |
Main rotor blades - 600mm
each
1200 mm diameter
FIVE of them as well=10
bolts to fit & remove them
Scary looking things eh ? |
So, I now have
pretty well most of the parts needed to complete the build, apart
from the rotor blade phasing unit, which it seems is going to be the
HeliCommand Rigid system, which not only provides the required blade
phasing software, but also all the auto pilot features that make
HeliCommand famous.
So once all
set up, we should be able to lift her off the ground, and then take
our hands of the sticks and leave her alone to hover all by herself.
- Great Stuff. 
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