Specs
Benchmark Prop8x4 break-in
Bore0.598" (15.2mm)
Carb TypeO.S. 10G designed for remote needle tuning
Crankshaft ThreadsUNF1/4-28 M5
Crankshaft TypeThreaded
CylindersSingle
Displacement0.15 cu in (2.49 cc)
Engine (Only) Weight4.87oz (138g) w/o muffler
Power TypeGlow
HP.41PS, 0.41 HP @17,000 RPM
Muffler Type2-piece aluminum
Muffler Weight1.5oz (42g)
Oil Type & ContentAt least 18% synthetic lubricant
Plug TypeO.S. A3
Product Height2.4" (61mm) crankcase botton to top of cylinder head
Product Length2.16" (56.5mm) from back plate to front of drive washer
Product Width1.6" (40mm) at mounting tabs
Prop Range7x5-6 x 8x4-5
Recommended Fuel5%-15% two stroke blend nitromethane
RPM Range2,500 - 18,000
Stroke0.539" (13.7mm)