Great Planes Giant Extra 330L Kit - GPMA0250 - Manual (Page 50)

70 Twin
Bore: 1.46 in
Stroke: 1.22 in
Displacement: 4.06 cu in
Weight: 6.28 lb
Includes spark plugs; requires muffler & prop
Starter control box requires 8 "AA" batteries
Recommended props: 20x12; 22x10; 24x10
Performance with 22x12 prop (indicative): 5600 rpm 85 Twin
Bore: 1.65 in
Stroke: 1.22 in
Displacement: 5.24 cu in
Weight: 6.73 lb
Includes spark plugs; requires muffler & prop
Starter control box requires 8 "AA" batteries
Recommended props: 24x10; 24x12; 26x8; 26x10
Performance with 22x14 prop (indicative): 6300 rpm
Italy's Mac Minarelli, known for competition-winning racing kart engines, also uses its CNC machine equipped facilities
to produce AVIOmac *70 Twin* and *85 Twin* gasoline-powered R/C engines. If you're looking for muscular, easy-starting,
extraordinarily smooth power for your 1/3 or 1/4 scale aircraft, THIS is where to look -- and where you'll save hundreds of
dollars!
Because these are "boxer-style" twins with cylinders designed to fire simultaneously, they're incredibly smooth. Others
alternate from right to left, throwing the engines' force from side to side and causing tremendous vibration. Roller bearing
connecting rods and bearing-supported crankshafts reduce friction to the minimum. An impeccable fit between the
cylinders and dual ringed pistons produces maximum power. Cylinder heads offer generous cooling fin area. Heavy-duty,
single bolt prop mounts eliminate the need for adapters.
You'll enjoy the fastest, simplest starts imaginable: AvioMac engines include a magneto-style, capacitive discharge
ignition system with an easy-to-use control box (powered by 8 "AA" batteries, not included). Attach the box, push a single
button once, and it fires the supplied, standard-size plugs until the engine springs to life. Then just disconnect the box and
take off!
AVIOmac engines include clear instructions, complete with exploded parts diagrams. And a generous warranty protects
your investment for three long years!
AVIOmac ™ Giant-Scale Gasoline Engines
Easy starts...ultra-smooth performance...unequalled value!
• Superior power PLUS exceptional economy for 1/3 and 1/4 scale R/C aircraft.
• Includes clearly written instructions, exploded parts diagrams AND
3-year warranty protection.
™
MMLG0070 MMLG0085