Hi Troy,
You are right, the plenum does not fit in the Classic if you install the
Skydrive
carb heat. Well it didn't with ours anyway.
We removed the bottom of the plenum with a hacksaw and restuck it together with
bid so that the body of the plenum was bought forward enough to leave an inch
between it and the firewall. The plenum vibrates with the engine and there are
wires etc going across the firewall so we needed a reasonable gap.
The Skydrive Carb heat is very effective and in Scotland the winter is damp
(100%)and
the temperature low. So far we have not had any hint of carb icing in spite
of flying in ideal conditions for it. I am now sticking to the rule of CHT
above 85 degrees.
The other day was a good example of how I now think about Carb Icing.
I was cruising at 6000ft in these kinds of conditions and the CHT dropped to
around
85 degrees. A wee bit close to the carb icing range. There were some ominous
looking mountains below which were not conducive to forced landings so I changed
the Airmaster Prop Controller to Manual and coursened the prop to make
the engine do that little bit more work in order to raise the temperature. The
CHT temps rose to 95 degrees, Oil temp 110 degrees and I felt comfortable above
the carb icing range again. IAS settled at 139kts which when corrected was
giving me a whopping 153kts at 5000rpm. It really was going that quick because
the GPS agreed. Back in the circuit having descended with the pitch set to
climb/descend
I kept the cowl flaps( our own mod.) closed and the CHT never went
below 90 in spite of the decent.
What a cracking little aeroplane this is. I love it.
The joys you have in store.
Cheers
Justin Kennedy & Ted Galdstone
G-ZTED Europa Classic Monowheel 912S Airmaster CP Prop
justin@systemwise.co.uk
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