Details:
High-Compression version Includes the copper gasket The MKII is an AAC design meaning an aluminum piston, an aluminum liner and chrome plate on the liner. It has a die cast case & alloy steel crankshaft. Use a quality fuel that is 10% to 20% nitro and at least 22% oil-one half caster and one half synthetic blend. Use a propeller from 5-3 to 6-4 for proper operation. The weight is 1.7 ounces and the operating range is 12,000 rpm to 18,000 rpm. This .049 is also schnurle ported for more power and better performance. WEIGHT: 1.7 oz. OPERATING RANGE: 12,000 rpm to 18,000 rpm. BORE - .400 in. Stroke (.395 In.) SHAFT: 4mm. (.157) To break-In this motor in half the time: We recommend the "Sullivan Hornet Starter" SU-598 http://brodak.com/sullivan-hornet-starter-for-1-2-a-engines-to-16.html Manufactured in the same factory as the Brodak .25 and .40, this powerplant features the same mounting pattern (beam mount only) as the original Brodak .049. Mounting Dimensions: Crancase Over-all Dimensions: SIDE TO SIDE 1-1/16 FRONT TO BACK 5/8
Mounting Hole Dimensions: SIDE TO SIDE 1-1/16 FRONT TO BACK 25/64