That would be plenty of power. Certainly a buch more than we had back when the brushfire was being flown. 10 cc was the limit. I am not sure how the extra size or weight will fit in the nose or affect balance however.

As for retracts, I would certainly use them if I were to build another. Trike gear. Another thing that I remmeber as being real nice with the Brushfire was takeoffs, rolling on the main gear, pulling the nose up first before lifting off. I used Spring Air once and they worked well, however once switching to mechanicals (MK or Supra) I never went back.

And sorry, although Rojecki may have flown it, Ken Bonnema designed it. Sorry for the mental lapse.

Stuart