Hello Flitzerpilot,The Currie Wots pre-war were built light and powered by 37 hp JAP flat twins and some recently discovered cine film of a post-war example with that engine demonstrated a remarkable performance. Harald Penrose flew his 'Airymouse' with that motor for several years before it was equipped with a bigger engine. Most commonly these use an A-65 or Walter Mikron.
But one small biplane which would be an ideal subject for the Pegasus, as VB states, is the Flitzer and the smallest and potentially lightest of the family is the Goblin. I attach a recent GA of a projected example, parts of which have been stored for many years, to be fitted with an existing Z-1M Meteor tailplane, ply-skinned and strut-braced from below to accommodate the all-flying rudder. The tailplane would actually be cantilever, but braced to protect it from damage by hangar gorillas due to the relatively small mounting bolt footprint of the Flitzer stab. Intended motor is an a1834cc VW at the stage. Two others are under construction for a big-bore VW and a Verner 5S.
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Yes I nearly built a Flitzer years ago, but life got in the way and I went in other directions as I am not a wood worker. Anyhow, VB has prodded me off an on recently about a Tube and Gusset version of the Goblin similar to a Baslee or Graham Lee version. I sell plans for the Lil Bitts biplane and the rough wing structure could all be done similarly. I have an Avid CNC router on order for project such as this but sadly it wont arrive until April. Avid is crazy busy right now. In the meantime I am setting up the hangar to be ready once everything arrives. Also have a Series 3 Tormach PC1100 waiting to be set up.