This is not their first petrol powered engine,
but it is however their first model helicopter petrol
powered engine.
In summary, the features of this engine are:
1 Compact — fits most .90-size model helicopters with only minor modifications
2 Offers outstanding fuel economy
3 Runs consistently without constant preflight adjustments
4 O.S./Walbro - developed pumper carburettor ensures consistent performance regardless of
attitude, altitude or fuel level
5 Features the IG-05 Ignition Module that is
designed specifically for model helicopters
6 The IG-05 Ignition Module arrives with a
straight plug cap for easy installation. It’s compatible with a wide range of battery chemistries, including NiCd or NiMH, LiPo and LiFe packs
Now I’m not an engine guru, that’s for sure, but
my fellow columnist Brian Winch, is pretty good at
reviewing model engines. So I sent the engine off
to Brian for his considered opinion. Brian was kind
enough to send me his findings, and here they are:
• Outer case is finely cast-pleasant fine bead
blast finish-very substantial but lightweight-excellent heat dissipation, very well supported front
housing-solid engine mount lugs. Backplate has
an “O” ring seal to eliminate leaks and seeping
during hot running.
• Walbro WT 243 pumper carburettor is well
matched to the engine and can be reversed according to control access needs. It has long control rods, and easy access to control the arms.
• The piston is fully machined from bar stock
low expansion aluminium alloy, one iron ring fitted,
access to gudgeon through rear case aperture
40
Airborne