The upper end engines look about right, but the Babe Bee/ Golden Bee should be about 125 to 150 sp.in. And the others blended in appropriately.
Of course it depends on how hard you plan to fly the model. Level flight, loops and lazy eights on the one hand, or a precision pattern on the other end of the scale.
Look at the available kits to see what works.
Motorman, Larry,
Thanks for the responses. I'll put this on a note and stick it on the wall of my workshop. Since all my previous 1/2A C/L flying was done 55+ years back, my vague memory of puting a Baby Bee on all the Goldberg, and hollow log models seemed to have affected my "gut feel" on the small end.
Back then, the "how hard" factor was mostly for fun and amazement that I could actually do this. Three years of Christmas gift Cox and Wen Mac plastic ARF failures predisposed me to believe that 1/2A stuff was unflyable. Once I built that Ringmaster and Fox .35 and learned a smidgen about C/L flying, I decided that balsa did fly better than plastic and that I could build them. Then building and flying the Goldberg, Scientific, and cobbled up flying wings with a BB stuck up front was sheer pleasure.
I'm pretty sure that this time around, the flying will desired to be flown much harder!
Jim Howell
Huntsville, AL