RE: Starting the BPA
May I send a comment from the other side of the atlantic?
Since being a boy, I admired the fast, fast pattern planes. I am born 1967. I always loved the sound of tuned pipes, tricyle landing gears, retracts, and designs with little swept back wings... and so I still do today! I am happy to see there is quite a number of people enjoying the same thing.
But - many of us moved to bored out engines, just for the reason to have more power - you never can have enough power, insn´t it? Although there are still enough good .61 engines available, I would not restrict displacement to 10cc for two-strokes. .Webra sells the .61 RE Racing in a new edition, slightly modified. The very nice MVVS are available in .61 and .77 displacement. Yes, 13cc or .80 would be a good choice. If you go hunting a little in Ebay, you will find whatever two-stroke engine you need. You still get new O.S. 61 RF´s...
Your opinion please: This plane is a Topp Tempest, a german design of 1974 (so it tells on the plans). It has retracts, about 64" wingspan, and I am powering it by a Webra .60 Speed with tuned pipe. Would this be a candidate?