Full size printed Plan high-speed model L 28" Gas or Electric Express Cruiser For Radio Control
Description
Full size printed Plans
Not a KIT or MODEL no Material
Vintage plan from 1960
PIRANA
Full Size Plan on a Sheet 36” x 24”
Twelve Pages of building notes and photos
Length 28”
Beam 10”
Engine .06 to .15 Diesel (1cc to 2.5cc)
Convert to glow or Electric
Radio Control
By Vic Smeed
Pirana, is a lightweight, high-speed model with what we feel to be the best combination of length/beam ratio, planing area, hull form, etc., etc. The original idea of the model was sparked off by the success of our tests with the incredible little Frog 1 1/4 in. nylon three-blade prop which for some baffling reason delivers enormous thrust without cavitation when turned at 10-12000 r.p.m. or more by a 2+ or 3+ cc diesel. Torque reaction is slight with so small a propeller, but the oomph is terrific. We are, in fact, using a Frog 3.49 in our prototype, but unless speed control is fitted, we consider that it is unsafe to exceed 21/2 cc, and even then you are likely to have a bomb on your hands!
Thank You For Looking Rose