Thunder Tiger PRO .46 Ball Bearing ABN w/Muffler 
FEATURES: Dual ball bearing-supported crankshaft
          Schnuerle porting
          ABN (Aluminum Brass Nickel) piston/cylinder assembly
          Forged aluminum connecting rod with dual bushings
          Unique "squared" cylinder head design has more surface area than
            most conventional cylinder heads, for cooler runs
          Twin-needle carburetor

INCLUDES: Engine, Expansion-Style Muffler (with pressure fitting & rotatable
            outlet), glow plug, wrenches, decals, and instructions.

REQUIRES: Prop, engine mount, fuel filter, and fuel (Thunder Tiger
            recommends fuel with castor oil).

SPECS:    Displacement:                                 .455 cu in (7.46cc)
          Bore:                                         .853" (21.8mm)
          Stroke:                                      .7874"   (20mm)
          Power Output:                                1.43 HP @ 16,000 RPM
          Maximum RPM range:                           2,000 - 17,000 RPM
          Practical RPM range:                         2,500 - 14,000 RPM
          Weight (w/muffler):                          17.01oz (482g)
          Crankshaft thread size:                      1/4-28
          Crankcase width (for engine mount):          1.36"
          Exhaust mounting width (center to center):   37mm
          Overall height:                                3.4" (87mm)
          Overall width (w/mount flanges):                       1.97" (50mm)
          Overall length (backplate to front of drive washer):   3.39" (86mm)
          Recommended prop size: Break-In: 11x5
                                 Sport and Scale: 10.5x6, 11x6
                                 Aerobatic: 10x6.5, 10.5x6, 11x5

Thunder Tiger PRO .40 Ball Bearing ABN w/Muffler 
FEATURES: Dual ball bearing-supported crankshaft
          Schnuerle porting
          ABN (Aluminum Brass Nickel) piston/cylinder assembly
          Forged aluminum connecting rod with dual bushings
          Unique "squared" cylinder head design has more surface area
            than most conventional cylinder heads, for cooler runs
          Twin-needle carburetor

INCLUDES: Engine, expansion-style muffler (with pressure fitting & rotatable
            outlet), glow plug, wrenches, decals, and instructions.

REQUIRES: Prop, engine mount, fuel filter, and fuel (Thunder Tiger
            recommends fuel with castor oil).

SPECS:    Displacement:  .398 cu in (6.52cc)
          Bore:    .8228" (20.9mm)
          Stroke:  .7480"   (19mm)
          Power Output:  1.22 HP @ 16,000 RPM
          Maximum RPM range:  2,000 - 17,000
          Practical RPM range:  2,500 - 14,000
          Weight (w/muffler):  17.19oz (487g)
          Crankshaft thread size:  1/4-28
          Crankcase width (for engine mount):  1.36"
          Overall height:  3.4" (87mm)
          Overall width (w/mount flanges):  1.97" (50mm)
          Overall length (backplate to front of drive washer):  3.39" (86mm)
          Recommended prop size:  10x6 (break-in); 10x6 (aerobatic);
                                  11x5, 10x6 (sport and scale)
                                                 
Thunder Tiger PRO .36 Ball Bearing ABN w/Muffler 


             This is a .36 size Airplane Engine by Thunder Tiger.
        It is made in Taiwan and comes with a 3-Year Limited Warranty.

FEATURES: Dual Bearing-Supported Crankshaft
          Schnuerle porting
          ABN piston/cylinder assembly
          Forged aluminum connecting rod with dual bushings
          Unique "squared" cylinder head design has more surface area
            than most conventional cylinder heads, for cooler runs
          Twin-needle carburetor

INCLUDES: One Assembled Engine with glow plug
          One Expansion-Style Muffler w/pressure fitting and rotatable outlet
          One Wrench Set
          One Instruction Set and Decals

REQUIRES: Prop, engine mount, fuel filter, and fuel (Thunder Tiger
            recommends fuel with castor oil).
SPECS:    Displacement:  .365 cu in (5.98cc)
          Bore:    .8189" (20.8mm)
          Stroke:  .6929" (17.6mm)
          Power Output:  1 HP @ 14,500 RPM
          Maximum RPM range:  2,000 - 17,000
          Practical RPM range:  2,500 - 14,000
          Weight (w/muffler):  11.4oz (323g)
          Crankshaft thread size:  1/4-28
          Crankcase width (for engine mount):  1.22"
          Overall height:  3" (76mm)
          Overall width (w/mount flanges):  1.77" (45mm)
          Overall length (backplate to front of drive washer):  2.95" (75mm)
          Recommended prop size:  10x6 (break-in); 9x7, 9.5x6, 10x6 (aerobatic)
                                  9x6.5, 9x7, 9.5x6, 10x6 (sport and scale)



Thunder Tiger F-75S 4-Stroke w/Muffler 
SPECS:    Displacement: .752 cu in (12.33cc)
          Bore: 1.114" (28.3mm)
          Stroke: 0.772" (19.6mm)
          Practical RPM: 2,300 - 12,00 rpm
          Output: 1.2 HP @ 11,000 rpm
          Weight: 16.13oz (457.2g) without muffler
          Crankshaft Size: 1/4-28
          Height from Mounting Tab Bottom to Top of Rocker Arm: 3.5" (88.3mm)
          Height from Crankcase Bottom to Top of Rocker Arm: 4" (101.6mm)
          Width at Mounting Tabs: 2.12" (54mm)
          Width of Crankcase below Mounting Tabs: 1.43" (36.5mm)
          Center of Mounting Holes Same Side: .79" (20mm)
          Center of Mounting Holes Opposite Side: 1.8" (45mm)
          Center of Crankcase to Drive Washer: 2.25" (57.4mm)
          Distance from Backplate Screw to Drive Washer: 3.23" (82.2mm
REQUIRES: Fuel: 18% lubricant and 10-15% nitro content, synthetic/castor blend
            lubricant recommended
          Propeller: Break-in: 11x8
                     Stunt/Aerobatic: 11x8-9, 12x7-8, 12.5x6
                     Scale: 13.5x8, 14x7, 11x7 (3-blade)
          Glow starter, plug wrench and field equipment

Thunder Tiger F-54S 4-Stroke w/Muffler 
SPECS:    Displacement: 8.86cc / .541 cu in
          Stroke: 19.6mm / .7765 in
          Bore:     24mm / .9448 in
          RPM: 1800 -12,500
          Power: .9 HP @ 12,000 RPM
          Weight: 430g / 15.2oz
          Recommended Props: Break in / 11x5
                             Flying / 10x9 - 11x8
          Overall height: 99.75mm (3.92")
          Center of crankshaft to top of valve cover: 81.5mm  (3.2")
          Between mounting holes front to back:         20mm (.787")
          Between mounting holes side to side:          44mm (1.73")
          Drive washer to rearmost point:             96.7mm  (3.8")
          Crankshaft thread: 1/4-28

O.S. 155FS-a Pumped Engine INSTOCK 499.99
FEATURES: Ideal for 120 size scale and sport models and aerobatic models
            requiring stable power and linear throttle response
          PD-08 pump and 70R carburetor integrated with regulator ensures
            stable fuel delivery regardless of model attitude and fuel level
          F-6020 three piece design muffler with center heatsink
          New internal lubricating system eliminates breather tubing from the
            crankcase
          Two year limited warranty through Hobby Services beginning at date of
            purchase

INCLUDES: FSa-155-P Four Cycle Engine with PD-08 Pump System, 70R Carburetor
            F-6020 Muffler, Header Pipe, type F Glow Plug, Needle Valve
            Extension Cable, Instruction Manual

REQUIRES: Fuel: Glow fuel with 5-20% nitro content and no less than 18%
            lubricant content
          Propeller: 16x8-12 or 17x8-12
          Glow Starter
          Field equipment

SPECS:    Displacement: 1.548 cu in (25.36cc)
          Bore: 1.323" (33.6mm)
          Stroke: 1.126" (28.6mm)
          Practical RPM: 2,000 - 10,000 RPM
          Power Output: 2.6hp @ 10,000 RPM
          Engine Weight: 28.40 oz (805g)
          Muffler Weight: 3.35oz (95g)
            Carburetor Settings-
          Needle Valve: 2-1/2 - 3 turns from fully closed
          Mixture Control Valve: Factory set, make only small adjustments if
            needed, after adjusting needle valve as described in manual, turn
            30° to lean idle mixture or 90° counterclockwise to richen mixture
            then back again 45° clockwise


O.S. FS-95V Ringed 4-Stroke Engine IN STOCK $ 299.99 
FEATURES: 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
          Two year limited warranty through Hobby Services beginning at date of
            purchase

INCLUDES: O.S. Engines FS-95V Four Stroke Engine with Type F Glow Plug, Muffler
            Header Pipe with two Locknuts and Instruction Manual

REQUIRES: Fuel: 5-20% nitromethane aircraft blend with 18% lubricant content
          Propeller: Sport & Aerobatic 13x7-9, 14x6-8
                     Scale 15x6-8

SPECS:      Carburetor Settings-
          Needle Valve: 2-1/2 - 3 turns from fully closed
          Mixture Control Valve: Rotate until slotted head is flush with carb
            body. After setting needle valve, rotate mixture control valve
            approximately 45° clockwise to lean the mixture or 45° counter-
            clockwise to richen mixture

O.S. 56FS-a Ringed 4-Stroke w/Muffler INSTOCK $309.99

FEATURES: Improvements over the original FS series include;
            Elimination of Crankcase venting-excess crankcase oil is now drawn
             into the Rocker Cover, injected back into the combustion chamber.
            Stronger Connecting Rod, Wristpin and Valve assembly
            Extended intake tube on Carburetor restrains the reverse flow of
             the air/fuel mixture
            Decreased width Camshaft housing for less interference with sides
             of aircraft nose section
           F-4040 muffler with adjustable offset and outlet direction for
             easier cowl installations
           40NA two needle Carburetor

INCLUDES:  O.S. Max 56FS-a Four-Stroke Engine with F-4040 muffler, type "F"
            header pipe, glow plug, instruction manual

REQUIRES: Fuel: 5-20% nitro with 18% lubricant content
          Propeller: Sport & aerobatic; 13x6, 12x6-8
                     Scale; 13x6-7, 12x6-8
            (break-in engine with prop intended for use on model)
          Electric starter, glow starter and field equipment

SPECS:    Displacement: 0.569 cid (9.32cc)
          Bore:   .945"   (24mm)
          Stroke: .811" (20.6mm)
          Practical RPM: 2,400-13,000
          Weight: 14.8oz (419g)
          Crankshaft Size: 1/4-28
          Break-in Needle Valve Settings: 2-2.5 turns from fully closed
          Distance Between Mounting Holes Same Side:     .69" (17.5mm)
          Distance Between Mounting Holes Opposite Side: .16"   (44mm)
          Height from Crankshaft Center to Rocker Cover: 3.3"   (84mm)
          Distance from Crankcase Center to Prop Hub:      2" (50.8mm)
          Distance from Crankcase Center to End of Crankshaft: 3.5" (88mm)
          Distance from Crankcase Center to Throttle Lever Center:1.3" (32.5mm)
          Width of Crankcase Below Mounting Tabs: 1.3" (34.1mm)
          Angle of Muffler in Relation to Engine: 11°

          Needle Settings: High Speed: 2.5 - 3 turns out from fully closed
                           Low Speed:  Flush with carb body
.

       This is the O.S. Max 1.60 FX High-Performance R/C Engine used for
                         Sport and Aerobatic Aircraft.
           This 1.60 FX is Designed to use a Muffler or Tuned Pipe.

FEATURES: One-piece crankcase
          Twin ball bearing-supported crankshaft
          Schnuerle porting (Schnuerle scavenging)
          Steel liner and ring with Aluminum piston
          Tall, squared heat sink head for added cooling
          Engineered for low fuel consumption and tight installations.
          Side exhaust with muffler with rotatable exhaust outlet. Wide wing-
            shaped exhaust port contributes to higher torque at lower rpm.
          Extra long crankshaft & jam nut w/prop washer to secure the propeller
          #60F Carburetor with remote needle mounted on the backplate of the
            engine (to keep fingers away from the spinning propeller).
            The remote needle valve can be mounted three ways: vertical,
            horizontal, and separate from the engine.
          Two year warranty
INCLUDES: One Assembled 1.60 FX Ringed R/C Airplane Engine, #60F Carb,
            smaller nut for APC props and 3/8-24 safety lock nut
          One exhaust adaptor
          One remote needle valve
          One 77mm (3") clear fuel tubing for remote needle
          Two 5 x 15mm cap head adapter mounting screws
          Two 5 x 19mm cap head muffler mounting screws
          One 4mm allen wrench
          One expansion style muffler (E-5010) with screws
          One illustrated instructions booklet w/parts list and O.S. decal
          One O.S. #8 glow plug (OSMG2691)

 
 
O.S. 160FX Ringed w/Muffler INSTOCK 319.99 
FEATURES: Advanced Bi-Metallic Liner. This process uses a double layer of
            plating material rather than one thick layer. This helps the metal
            to bond to the cylinder and is more durable. Also, the plating
            process is more consistent, resulting in a more precise fit between
            piston and sleeve for better compression, longer life.
          Side exhaust
          E-3071 Power Box muffler with squared-off shape enables it to fit
            into a variety of cowls
          40K carburetor with rear angled needle valve for added safety
          Ball bearing-supported crankshaft
          Two-year limited warranty through Hobby Services beginning at date of
            purchase

INCLUDES: One O.S. Max .46AXII ABL BB model airplane engine w/muffler, A3 glow
            plug, two 3mm x 35mm cap head muffler screws, extension cable for
            remote needle, 3mm x 35mm cap head muffler screws, warranty sheet,
            decal sheet, and illustrated instruction manual

REQUIRES: Fuel containing 5%-20% nitromethane with at least 16% lubricant
          Most of the fuels we carry meet or exceed the lubricant content
            required for optimum performance and maximum engine life. In the
            past, the conventional lubricant content used in fuel was 18%. But
            with new advanced technologies, fuels like Red Alert and O'Donnell
            for example, have a better quality of lubricants even though the
            percentages of lubricant content are lower. These high-tech
            lubricants provide exceptional cooling and protection
SPECS:    Displacement: 0.455 cu in (7.45cc)
          Bore: 0.866" (22mm)
          Stroke: 0.772" (19.6mm)
          Practical RPM: 2000-17000
          Power Output: 1.65PS, 1.67HP/16000 RPM
          Weight: 13.3oz (378g) without muffler
          Recommended Propellers: 10.5x6, 11x6-8, 12x6-7, use 10x6 for break-in
          Crankshaft Size: 1/4-28

          Distance from remote needle to end of crankshaft:  4.7" (119.4mm)
          Distance from center of engine to drive hub:       2.4"    (61mm)
          Distance from center of engine to end of crankshaft:  3.4"  (87.6mm)
          Distance/crankshaft center to muffler exhaust outlet: 3.9" (100.5mm)
          Height from crankcase bottom to top of cylinder head: 3.3"  (85.2mm)
          Height/crankshaft center to top of cylinder head:     2.6"  (67.4mm)
          Width including mounting tabs:                          2"  (50.8mm)
          Width not including mounting tabs:                    1.4"  (35.6mm)
          Width/mounting hole centers same side:                .69"  (17.5mm)
          Width/mounting hole centers opposite side:            1.7"    (44mm)
          Diameter of muffler body:                             1.5"  (38.1mm)
          Angle of muffler in relation to engine:               4°
          Carburetor Settings;
            Needle Valve: 1½  to 2 turns out from closed position
            Low Speed Needle (aka: Mixture Control Valve): Close throttle rotor
             gradually from the fully opened position until it is just fully
             closed (do not turn further).
             Screw in the Mixture Control Screw until it stops. Now open the
             Mixture Control Screw approx. one turn.

O.S. 46AX II ABL 40K E-3071ON ORDER  $134.97
 This is the OS Engines GT22 Gasoline Powered Engine with Muffler        
                         and Rear Mounted Carburetor.                          
                                                                               
    **Additional Technical Info Will Be Added When It Becomes Available.**     
                                                                               
FEATURES: Beam mounting design allows engine to fit inside cowls that are      
            sized for 2-stroke .60-.91 and 4-stroke 1.20 glow engines          
          Custom designed rear mounted Walbro carburetor with choke rod guide  
            integrated into crankcase that minimizes set-up time               
          IG-02 electronic ignition handles 4-6 cell NiCd, NiMH or 2-cell LiPo 
            and LiFe batteries                                                 
          Pitts style muffler has reinforced mounting bolt holes and webbing at
            high stress points                                                 
          Two year limited warranty through Hobby Services beginning at date of
            purchase                                                           
                                                                               
INCLUDES: GT22 Engine with Muffler, Electronic Ignition Module, CM-6 Spark Plug
            Muffler Gasket, Muffler Bolts and Instruction Manual               
REQUIRES: 2-cycle oil                                                          
          Ignition Battery: 4-6 cell NiCd, NiMH, or 2-cell LiPo                
            LiPo battery requires voltage regulator                            
          Propeller: 16x8, 16x10, 17x6, 17x8                                   
          Gasoline safe fuel tubing and fuel filter                            
                                                                               
SPECS:    Displacement: 1.35 cu in (22 cc)                                     
          Bore: 1.26" (32mm)                                                   
          Stroke: 1.08" (27.5mm)                                               
          Practical RPM Range: 1,800 - 9,000                                   
          Output: 2.66 hp @ 9,000 RPM                                          
          Weight:                                                              
            Engine: 26.86oz (761.6g)                                           
            Muffler: 4.68oz (132.6g)                                           
            Ignition Module: 3.7oz (105g)                                      
 
OS Engines GT22 Gasoline Powered Engine with Muffler $ 409.99    INSTOCK