Full Size Printed Plans very fast Moderate Vee 28" Electric or .21 IC for Radio control

COBRA 21

FULL SIZE PRINTED PLANS on a SHEET 40"x 28"

Four Page article with photos and Building notes

Designed By : David Thomas

LENGTH 28 Inches

BEAM 8.6 Inches

HULL FORM

Moderate Vee .

ENGINE SIZE Electric or .09-.21 cu. in. Glow Engine

NO. OF CHANNELS 1 or 2

CONTROL FUNCTIONS Rudder (optional speed control or throttle)

BASIC MATERIALS USED IN CONSTRUCTION: Balsa & Plywood

This model was designed around the Sea Ram engine and equipped with it; the boat is very fast. Other engines could be used, but if they are, don't expect to get the same sort of performance from them — the Sea Ram is unique in its power output. It would no doubt be possible to fit the model with a glow engine up to .21 cu. in., and anyone wishing to do so should not hesitate. I have not had time to do so myself with the prototype, but have no doubt at all that equipped in this way, the model would remain stable and fast. If a glow engine is used, the inside of the hull must be thoroughly fuel proofed.