I have always wanted a "Wot 4", ever since they were first put on the market in 1977. The demise of my "Super Sportster" early in 2002 provided the ideal excuse. I bought a deluxe kit of the mark 3 version with tapered wings in May 2002. The kit has a foam core wing, and a traditional fuselage "slab-sided" fuselage of balsa and plywood. The fuselage design is cleverly organised to incorporate a wide range of engine sizes (and weights). I chose a mid-range engine; my trusty OS 46LA from the Super Sportster. (That's a 36" ruler in the picture by the way)
The model was finished by the end of May and covered in Solarfilm. Bronwen choose the unusual but very effective colour scheme. I initially fitted my old, well used but reliable ACOMS radio equipment. I fitted four servos, one for each of the primary controls; ailerons, elevator, rudder, & engine. Early experiences with the 'plane were a delight. It flies precisely, going just where you want it to. It's almost as if it flies by telepathic control.I was having great fun with this 'plane and practicing hard for my BMFA B-test when I had a bad experience with radio interference. The 'plane dived straight down into the ground almost before I could blink. There was surprisingly little damage, none at all to the wings and tail, and just minor damage to the fuselage. The engine was completely buried in the (soft) ground yet all I needed to replace was the propeller and needle valve assembly. The fibreglass cowl was smashed to smithereens too but I haven't bothered to replaced that. I did throw the ACOMS radio away though, I didn't trust it any more, and bought myself a new Futaba FF6 outfit.
The Wot-4 is now my "regular" model that I take to the field most often. It didn't let me down on by B-test day, and I am having lots of fun with it. The engine has enough power to climb rapidly (about 60° I reckon). The OS "super silencer" is very effective. You can see in one of the photos that I also use a piece of silicine tubing. The results of the club noise test are a very creditable 74dB maximum turning a 11x6" APC propeller at 10,300 rpm. In case you're interested the Wot-4 spans 56" and is 45½" long. My 'plane weighs 5lbs, ready-to-fly.
Update on 22nd August 2006. My trusty Wot-4 suffered a terminal crash today while using the model as a club trainer. Both my trainee and I were dazzled by the evening sunshine and lost control. It's amazing how quickly the ground appears in these circumstances. It was quite a severe crash so I'll build another rather than attempt to repair it - it's getting quite elderly anyway!