O.S. BGX-1 3500 Ringed w/Remote Needle Valve

Tower Stock# LXBY40  •  Manufacturer Stock# 19301
O.S. BGX-1 3500 Ringed w/Remote Needle Valve (large view)
Notes from our tech department:
This BGX-1 is the engine of choice for those Giant Scale Modelers. The BGX-1
35cc Engine was designed as a lighter, more powerful, less vibration, and more
compact alternative to the converted chainsaw gasoline engines. One drawback;
fuel economy is better with the chainsaw engines, and fuel is less expensive.
The BGX-1 includes an engine mount that mounts to the firewall in the same bolt
pattern as the backplate-style engine mounts that come with SuperTigre's models
S2000, S2500, and S3000(K) engines. You can directly replace any of those
engines with the BGX-1 without redrilling your firewall.
This engine is covered under the O.S. 2-YEAR WARRANTY.


Two crankshaft ball bearings
Side exhaust
Ringed piston
Schnuerle porting (AKA Schnuerle scavenging)
Two chamber expansion-type muffler (included)
Safety prop nut assembly
Remote Needle Valve .


Expansion-Style Muffler w/Adapter and Screws
Backplate-Style (radial) Engine Mount (OSMG2308)
One Hardware Bag w/screws, blind nuts, lock (split) washers to mount
the engine
One Safety Prop Nut Assembly (OSMG6689)
One Woodruff Key (OSMG9364)
One #8 Glow Plug (OSMG2691)
One Set of Instructions, Poster, and Decal
One Remote Needle Valve and Hardware to mount the needle valve .


Construction: Aluminum and Aluminum alloys
Displacement: 35cc (cubic centimeters) or 2.13 cubic inches
Bore: 37.3mm (1.47")
Stroke: 32mm (1.26")
Max Output: 4.1 PS, 4.04 HP at 10,000 RPM
Practical RPM Range: 1,500 - 10,000 RPM
Crankshaft Thread Size: 3/8-24
Height: 142.5 (5.61")
Width: 60.5mm (2.38") Width neglecting the engine mounting flanges
74mm (2.91") width between the centers of the mounting holes
103mm (4.05") diameter of the backplate engine mount
Length: 129.5mm (5.10") from the back of the engine mount to the
front of the drive washer
Weight: 1340g (47.3ozs) without mount or muffler
1045g (49.6ozs) with the mount and NO muffler
Suggested Prop Sizes: 18x8, 18x9, 18x10, 18x11, 18x12, 20x8, 20x9,
High Speed Needle: 1 - 1.5 turns out from fully closed
Low Speed Needle; 1 - 2mm gap between the needle and spray bar at
full throttle (looking down the neck of the carb)


Fuel with 5%-10% nitromethane and 18% MINIMUM lubricant content (20%
is recommended). ALL 5%-15% fuels we carry meet these requirements.
updt lmm 3/27/09

Easy RC: Engines
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