RE: WILLHOBBY FW 190 Build
Some specs from Horizon Hobby on the 150. After you break the engine in I'd like to see what kinda of RPMs you get from the 3 blade 16x8.
150 AAC w/Muffler: CC
Key Features
Incredible power—2.5 horsepower
APC 16 X 8 over 9,000 rpm
Same dimensions and weight as 1.20-size engines
Overview
The 1.50S is actually a bored-out 1.20S for an incredible power-to-weight ratio. With over 20% greater displacement, the 1.50S will happily swing an APC 16x8 prop at 8,800 rpm with 15% fuel.
Specs
Type:4-stroke
Displacement:1.50 cu in (25.00 cc)
Bore:1.33 in (34.00 mm)
Stroke:1.08 in (27.60 mm)
Cylinders:Single - Chrome Plated
Engine (Only) Weight:30 oz
Crankshaft Threads:M8 x 1.25mm
Benchmark Prop:16x8 APC @ 8,800
Prop Range:16x8 - 18x6
RPM Range:2,000 - 10,500
Fuel:10%-30% Synthetic
Mounting Dimensions:138 x 69 x 134 mm
Muffler Type:Cast
Cylinder Type:AAC
Carb Type:Barrel, 2 Needle Valve
Crank Type:Bal Bearing
[link=http://www.rcuniverse.com/forum/m_1148729/anchors_1148801/mpage_1/key_Saito%252C150%252C3blade%252Cprop/anchor/tm.htm#1148801]3 blade question[/link]