OS Engines

Connecting Rod OS max 91SX-H/HZ

Cover Plate 50SX-H

Crankshaft 50SX-H

Broad power band for a wide variety of airplanes including models designed for .60 2-stroke and .90 4-stroke engines

Redesigned cylinder head to match angled valve layout for steady power at all times and a perfect balance between high combustion and efficient cooling

Redesigned "Jet Stream" muffler with unique shape for more authentic four stroke sound

Same mounting dimensions, drive hub position and linkage position as the O.S. FS-91 Surpass II, 61FX, 65LA, 75AX, 95AX and FS-110

INCLUDES

O.S. Engines FS-95V Four Stroke Engine with Type F Glow Plug, Muffler

Header Pipe with two Locknuts and Instruction Manual

REQUIREMENTS

Fuel: 5-20 nitromethane aircraft blend with 18 lubricant content

Propeller: Sport & Aerobatic 13x7-9, 14x6-8

Scale 15x6-8

SPECIFICATIONS

Displacement: 0.951cu in (15.59cc)
Bore: 1.142 (29.0mm)
Stroke: 0.929 (23.8mm)
Practical RPM: 2,100 - 11,000RPM
Power Output: 1.7ps10,000RPM
Weight: 20.88oz (592g)
Muffler Weight: 2.05oz (58g)
Crankshaft Size: 516-24
Height from bottom of Mounting Tab to Pushrod Cover: 3.8 (97.5mm)
Height from bottom of Crankcase to Pushrod Cover: 4.7 (119mm)
Distance from Carburetor to Drive Hub: 4.5 (115.7mm)
Distance Mounting Hole Centers Same Side: 0.98 (25mm)
Distance Mounting Hole Centers Opposite Side: 2 (50mm)
Mounting Hole Diameter: 0.16 (4.2mm)
Distance from Drive Hub to end of Crankshaft: 1.5 (37.4mm)
Distance from Drive Hub to center of Engine: 2.6 (66.5mm)
Width at Mounting Tabs: 2.4 (61mm)
Width Below Mounting Tabs: 1.7 (42.6mm)
Height Mounting Tab Bottom to center of Needle Valve: 0.70 (17.8mm)

O.S.Engine GGT15 - 15cc Airplane Gas Engine with a Glow plug!

The O.S. GGT15 is a revolution in petrol engines, it is a petrol engine that uses a glow plug! Though extensive testing and development OS have developed the special G5 gloplug capable of use in petrol engines giving you the efficiency and fuel price of a petrol motor with the value and simplicity of a glow motor. Based on the popular GT-15 the GGT15 is designed to fit in place of a .61-.91 engine but give you the efficiency of a petrol engine and the ease of use you normally associate with a glow engine. The use of a glow plug means the GGT15 is simple to install as it doesn't require an ignition module and easy to start using a normal glow starter like traditional glow engines.

Specs:

• Displacement: 14.95cc
• Bore: 27.7mm
• Stroke: 24.8mm
• Output: 2.32hp @ 15.000RPM
• Practical RPM Range: 2.000-15.000
• Weight Engine: 630g
• Weight Muffler: 169g

Hanno Special OS 61 RF-ABC Engine Gasket Set

Including: Head Allow gasket and Backplate special material Gasket

Connecting Rod 50SX-H,55AX

O.S ENGINE SCREW SET 140RX, 108FSR # OS29213000

SET OF Back plate and Head screws

O.S ENGINE SCREW SET 40.46FX - 50SX-H -55

SET OF Back plate and Head

O.S ENGINE SCREW SET 61SF, RF- RF-H,ABC- HANNO,60FP

SET OF Back plate and Head

O.S. Engine Radial Mount FS72A ,FL70, FS70U

O.S. Engines 25802000 Crankshaft 55HZ

This is a Valve Adjusting Kit for All OS Max 4-Stroke Engines.

FEATURES: This set includes all the tools needed to adjust the valves on the four-stroke engines.

INCLUDES:

One .04mm Feeler Gauge (.0015 in)
One .10mm Feeler Gauge (.004 in)
One 1.5mm Hex Key
One 5mm Wrench
One Plastic Carrying Case.

Replacement O.S. 40L Carburetor, and is intended for use with the O.S. 55HZ-H engine.

Replacement O.S. 40L-R (with pump) Carburetor, and is intended for use with the O.S. 55HZ-R engine.

This is a O.S. Engines Large Super Filter, intended for use with Tank re-filling fuel pumps This Dense fibrous filter element is installed inside a fuel container using standard (medium) diameter fuel tubing and will help to ensure that your fuel stays clean during the refueling process.

The 75AX is the next generation of "60 size" class airplane engines. It features the same bolt pattern as the original 61FX though boasts almost an a half a horsepower more! The 61A carburetor has an angled back needle valve which keeps your fingers much further away from a spinning propeller. Twin ball bearings support the hardened steel crankshaft for the ultimate in efficiency. Includes new 4040 Power Box™ muffler which increases volume for greater power, while at the same time being very compact. Angular head design looks great and significantly increases surface area for better cooling. This ABL (Advance Bimetallic Liner) sleeved engine will provide years of power and reliability. Fuel for this engine is recommended to use 5~20% nitro, with at least 18% oil content.

Features:
• Same bolt pattern as original O.S. 61FX, though almost half a horsepower more!
• Angular head design looks great while increasing surface area for better cooling
• Backward angled needle valve for easier and safer access
• Twin ball bearing supported hardend steel crankshaft
• Includes the new Power Box™ muffler, designed with more volume for increased power while still being very compact
• Advanced Bimetallic Liner (ABL) coating developed specifically by O.S.

Specs:

Displacement: 0.75 cu in (12.3cc)
Bore: 1.02 (25.8mm)
Stroke: 0.93 (23.5mm)
Practical RPM: 2,000-16,000 RPM
Power Output: 2.4 PS, 2.37HP15,000 RPM
Weight: 20.39 ounces (578g) wo muffler
26.46 ounces (750g) w muffler
Recommended Props: 14x6, 14x8, 15x7
Crankshaft thread size: 516-24
Distance from center of engine to drive hub: 2.62 (66.6mm)
Distance between exhaust bolt mounting holes 42mm
Height from crankcase bottom to top of cylinder head: 4.07 (103.5mm)
Heightcrankshaft center to top of cylinder head: 3.20 (81.5mm)
Width including mounting tabs: 2.4 (61mm)
Width not including mounting tabs: 1.67 (42.6mm)
Width between mounting holes same side: .98 (25mm)
Width between mounting holes opposite side: 2.04 (52mm)
Diameter of muffler body: 1.92 (48.8mm)
Angle of muffler in relation to engine: 4
Length from end of crankshaft to back of crankcase 5.09 (129.5mm)

High Speed Needle: 1.5 - 2 turns out from fully closed
Low Speed Needle: 2mm gap between the needle and spray bar at full
throttle (looking down the neck of the carb)

O.S. Engines 90 Degree in-Cowl Header FS110A adaptor 90D

perfect for Pattern fuselages installation

O.S. Engines BOOSTER CABLE SET FOR SINGLE #OS72200200

O.S. engines Carburetor Complete 60H

O.S. Engines Crankcase .50 SX-H #OS25201000

O.S. Engines Crankcase 140RX #29401000

Cylinder Liner 50 HZ

O.S. Engines Flex Pipe for FS70-91S/70U/FL70/FS81A 240mm 1111B

perfect for Pattern fuselages installation

O.S. Engines Flexible pipe to connect Header to Pipe, best for installations Dia 20mm

color Black

Length:120mm, Diameter 20mm

The O.S. FSa-72 II is the latest version of this popular sized, high-performance four-stroke engine. Updates include a revised oil breather system which now vents from the crankcase rather than being re-ingested in the inlet to improve the running consistency. The rocker cover is now black in order to improve the appearance of the engine when fitted to a scale model.

The FSa-72 II sharing the same mounting dimensions of the previous generation aswell as the older FL-70 and FS-70U making it a simple bolt-in replacement. The compact external dimensions and power/torque means it is ideal for most types of model designed for .46 2 strokes or .70 4 strokes. Like all the FS series the FSa II engines use a super-smooth carburettor with anti 'spit' inlet and an ultra-quiet silencer. If you have a flying filed 'noise' problem, then this is the engine you need for your average sport model. The 61N carburettor provides both linear and fuel efficient mixing to gain you reliability and precison control at all RPMs.

Specifications

• Glow Plug O.S. F Type (Inc.)
• Weight 530g (18.69 oz)
• Capacity 11.79cc (0.719 cu.in)
• Propeller Range 12 x 7" or 12 x 8" (Sport)
• Propeller Range 14 x 6" or 14 x 7" (Scale)
• Bore 27.0mm (1.063")
• Stroke 20.6mm (0.811")
• Power Output 1.2PS @ 12,000 rpm
• Practical RPM 2400 - 12,500 rpm

With the FS-SURPASS series, OS has developed a new generation of four-stroke single-cylinder engines. Especially in terms of performance, they considerably surpass the previous OS four-stroke engines of the same displacement size.

19.96 cm³ displacement. Quadruple ball bearings with fuel pump.

Technical data

Longitudinal clearance holes [mm]: 25mm

Spacer holes crosswise [mm]: 58mm

Article number Manufacturer: OS35540

Type: 4-stroke Nitro

mounting hole Ø [mm]: 5mm

Bore [mm]: 30,4mm

Width [mm]: 67mm

Speed range approx.: 2.000-12.000 rpm

Recommended propeller: 15x8 - 16x10

Total weight [g]: 920g

Height approx. [mm]: 138mm

Stroke [mm]: 27,5mm

Displacement [ccm]: 19,96ccm

200-size power in a 120-size package!

How do you get 200-size power from a 120-size engine? O.S. calls it the FS155-a. Since the FS155-a is a pumped 4-stroke, you’ll enjoy 2.6 hp at all times, regardless of tank position, attitude or fuel level. Its novel re-circulation system bathes working parts in constant lubrication, for less friction and wear!

The biggest engine in the 'Alpha' series has been designed with both aerobatic and scale modellers in mind.

Because it's a pumped 4-stroke, you’ll enjoy plentiful power regardless of tank position, attitude or fuel level

Instead of oil venting through the crankcase, it’s re-circulated to lubricate working parts — reducing friction and wear as well as cowl cleanup.

Includes the 70R regulating carb for superior throttle response and precise fuel metering.

Specifications:

Weight 805g (28.4oz) W/O Silencer

Weight 95g (3.35oz) Silencer

Displacement 25.36cc (1.548cu.in)

Bore 33.6mm (1.323in)

Stroke 28.6mm (1.126in)

Power Output 2.6PS @ 10000RPM

Practical RPM 2000 - 10000RPM

Supplying more power to 4-cycle 120 class with a large lineup of attractive aircraft, equipped with pump system as standard equipment, you can fly scale and stunt planes gracefully.
Four-stroke aircraft engine with a 25.36cc glow plug with a two-needle RC carburetor. Power 2.6 kW at 10000rpm. Weight with silencer 805g.

The crankshaft has a thread for propeller nut UNF 5 / 16-24, in the motor assembly is supplied with a set of lock nuts OS for reliable fastening of the propeller.

Suggested propeller dimensions: Sport and Acrobat / Dummy: 16x8 ~ 12 "~ 12 17x8"

Recommended fuel tank: 430-500 ml; 430 ml tank lasts for about 10-11 minutes of flight.

Recommended fuel: at least 18% castor or synthetic oil, 5-20% nitromethane.

Recommended Plug: OS MAX type F.

Set engine includes: motor FS? -155-P with RC carburetor 70R with a pressure regulator and fuel pump PD-08 muffler F-6020 manual.

Displacement [cc] 25.36

Number of cylinders 1

Bore [mm] 33.6

Stroke [mm] 28.6

Operating speed [rpm] 2000-10000

Engine power (at 10,000 rpm) [kW] 1.9

Power (at 10,000 rpm) [HP] 2.6

Weight (motor) [g] 805

Weight (silencer) [g] 95

Recommended tank volume [ml] 430-500

Recommended candle MAX OS Type F

Propeller nut thread UNF 5 / 16-24

The twin-opposed cylinder layout of this motor virtually eliminates motor shake to give you more stability in the air than ever, and at incredible power! With an RPM range of 2,000 to 10,000 and two horsepower of output, this is one powerful engine. Everything needed to mount it in your aircraft is included. Pick it up, pick a prop, and enjoy peak performance on demand!

The horizontally-opposed cylinder heads on the Gemini Twin Cylinder FT-160 improve balance, minimize vibration, and deliver the power you need to catapult through the sky.

Tough construction, precision fit, and OS quality virtually guarantee top in-flight performance.

FEATURES

• HP: 2.0 hp @ 10,000 rpm
• Plug Type: (2) Type F glow plugs
• Product Height: 3.15 in (80mm)
• Product Length: 4.72 in (120mm) from backplate to front of the drive washer
• Product Width: 7.72 in (196mm)
• Prop Range: 15 x 8 - 20 x 6

Recommended Fuel: Glow fuel with at least 16% lubricant content

• RPM Range: 2,000 - 10,000 rpm
• Stroke: 0.866 in (22.0mm)
• Displacement: 0.809 cu in (13.26 cc) x2
• Power Type: Glow
• Crankshaft Threads: 5/16-24
• Cylinders: Twin
• Bore: 1.09 in (27.7mm)
• Carb Type: Rotary, 2 needle with choke valve extension
• A compact, twin opposed-cylinder engine
• Two horsepower peak delivery at 10,000 RPM
• Built to last, with ringed piston and ball bearing-supported cam and crankshaft
• Two sure-fire #F glow plugs
• Engine mount and hardware
• Choke valve extension
• Locking prop nut assembly
• 2-Year limited warranty

O.S. Engines HEADER for OS 108 rear exhaust (the header is special one with Round exhaust, 3 points of attachment)

color Black

Diameter 22mm

OS Engines Heatsink Head 55HZ

O.S. Engines Intake Manifold FS155A-P # 42569400

O.S. Engines LOCK NUT SET FOR FS-70S, 91S, 120SE & 91 FX #OS45910300

O.S. Engines Needle Assembly 6H-7H-8B-C14 #OS27381900

O.S. Engines Needle For engine 140RX #OS29481970