Work on the Moswey III continues. With the very short nose, the Moswey III needs around 400-500gr weight in the nose to get the CG right. I’ve tried to reduce this by building the lighter (balsa) version of the elevator (with parts kindly provided by Frank Albrecht, who also produced this kit). Then the difficult decision: FES or not. The opportunity to replace so much dead weight with a much more useful electric motor, and gaining the benefit of being able to fly at my club’s airfield, really makes the answer a no-brainer. Leomotion.com provided a really nice and light electric motor with shaft extension. It’s at the lower end of what’s needed to bring this bird up, but I really wanted a light 6S setup and, knowing how the Moswey III flies, it will not be used all that much.
I guess the least favourite work of most aeromodellers is fitting and glueing the canopy. I built the canopy frame a few weeks ago, using plywood, balsa and glass. Sanding it to size and fitting the canopy was a lot of work, but something that just needs to be done. This morning I glued the canopy onto the frame using epoxy resin, doesn’t look too bad. Fingers crossed that it will separate well tomorrow morning.
Also ready are the rudder and tow hook servo setup. They will be glued into the fuselage over the next few days. I’ve gone for very light Chocomotion 12/9.5 servos. They are as powerful as the Futabas that we used for earlier builds. I’ve used these Chocomotion servos before, they’re great.
“Light” is the main theme of this build. Last week we maidened a Moswey III of a colleague in aerotow. It was an older and much heavier version of the kit by Frank Albrecht, with a heavy FES setup. The flight again underlined the importance of building light. The Moswey III handles a bit of extra weight well, in flight. The one of a colleague we maidened last week was well over 7kgs. The problem is that landings can get critical. The stall speed goes up a lot as it’s weight increases, which makes landings so much more challenging. I aim to have my Moswey well under 6kgs. I’ve occasionally flown the very old Moswey III of Georg, which is around 5.5kgs, and a real “balloon”, staying up forever. So far I’m at around 4.1kgs with all electronics, but without covering and some parts of the wings. Curious where it will end up….