ORIGINAL: Wayne C
I bought a Bradak kit of the Goldberg Lil Wizard a few weeks ago. The nose has been redesigned to accomodate beam mount engines like a TD or Norvel. No plastic engine mount here. The engine bearers are good solid hardwood. The wasp .061 engine, which is a beam mount engine, is currently enjoying a bit of popularity among 1/2a controlline flyers. Also, both versions of the Brodak .049 as well as the Brodak .061 are beam mount engines.
That plane was designed for an engine within the power range of a Babe Bee. Assuming your Wasp or NORVEL are the RC versions, I would suggest you run them with the throttle partly closed to get the power down.
IMHO both the TD and NORVEL (CL version) are too powerful. I do not yet have the Brodak engines you mention so I can not comment on them.
Good luck with it.
George