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  • New technology of pistons, cylinders and crankcase
  • Superior power and reliability
  • Best quality and precision
  • ignition system prepared for direct connetction to 2 cell LiPo batterys without using voltage regulator

    The engines are in alphabetical order. You can see further informations by clicking onto the images
    if you are planning to buildt our engines into any other vehicle than a model airplane please contact 3W Germany directly

you can choose a decompression valve for enginges with cylinders bigger than 2.90 cu.in
notice the starting procedure

Name Techn. specifications  
3W-28i
  • Cylinder capacity: 1.74 cu.in
  • Power: 3,4 HP; 2.5 KW
  • Bore dia.: 1.42 in
  • Stroke: 1.10 in
  • Speed range: 1500 - 8500 rpm
  • Weight: 2.67lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 6x10; 18x8; 18x10; 20x8
    Propeller 3-bladed / à 3 pales: 16x8; 16x10
  • find first photos in our 3W stuff gallery here

 

 

 

 

3W-55i
  • Cylinder capacity: 3.35 cu.in
  • Power: 5,2 HP; 3,82 kW
  • Bore dia.: 1.77 in
  • Stroke: 1.38 in
  • Speed range: 1300 - 8500 rpm
  • Weight: 4.27 lb incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 22x8; 22x10; 22x12; 24x8
    Propeller 3-bladed / à 3 pales: 19x12; 20x8; 20x10; 22x8

 

 

 

 

3W-55i US
  • Cylinder capacity: 3.35 cu.in
  • Power: 5,2 HP; 3,82 kW
  • Bore dia.: 1.77 in
  • Stroke: 1.38 in
  • Speed range: 1300 - 8500 rpm
  • Weight: 4.27 lb incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 22x8; 22x10; 22x12; 24x8
    Propeller 3-bladed / à 3 pales: 19x12; 20x8; 20x10; 22x8

 

 

 

 

 

3W-56i B2
  • Cylinder capacity: 3.48 cu.in
  • Power: 5,5 HP; 4.0 kW
  • Bore dia.: 1.42 in
  • Stroke: 1.10 in
  • Speed range: 1500 - 8500 rpm
  • Weight: 4.51lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 20x12; 22x10
    Propeller 3-bladed / à 3 pales: 20x10; 21x10; 19x12
  • find first photos in our 3W stuff gallery here

 

 

 

 

 

3W-80 XI
  • Cylinder capacity: 4.76 cu.in
  • Power: 8.5 HP; 6.25 kW
  • Bore dia.: 1.97 in
  • Stroke: 1.57 in
  • Speed range: 1100-8500 rpm
  • Weight: 5.2 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 26x10; 26x12; 28x10
    Propeller 3-bladed / à 3 pales: 22x12; 23x12; 24x10

 

 

 

3W-80 XI TS
  • Cylinder capacity: 4.76 cu.in
  • Power: 8.7 HP; 6.39 kW
  • Bore dia.: 1.97 in
  • Stroke: 1.57 in
  • Speed range: 1100-8500 rpm
  • Weight: 5.5 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V double ignition
  • Propeller 2-bladed / à 2 pales: 26x10; 26x12; 28x10
    Propeller 3-bladed / à 3 pales: 22x12; 23x12; 24x10

 

 

 

 

 

 

images
coming soon

3W-85 Xi
  • Cylinder capacity: 5.11 cu.in
  • Power: 9,2 HP; 6,76 kW
  • Bore dia.: 2.0 in
  • Stroke: 1.61 in
  • Speed range: 1100-8500 rpm
  • Weight: 5.28 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V double ignition
  • Propeller 2-bladed / à 2 pales: 26x10; 26x12; 28x10
    Propeller 3-bladed / à 3 pales: 22x12; 23x12; 24x10

 

 

 

3W-85 XI TS
  • Cylinder capacity: 5.11 cu.in
  • Power: 9,4 HP; 6,91 kW
  • Bore dia.: 2.0 in
  • Stroke: 1.61 in
  • Speed range: 1100-8500 rpm
  • Weight: 5.28 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V double ignition
  • Propeller 2-bladed / à 2 pales: 26x10; 26x12; 28x10
    Propeller 3-bladed / à 3 pales: 22x12; 23x12; 24x10
 
3W-110i B2
  • Cylinder capacity: 6.61 cu.in
  • Power: 11,8 HP; 8,68 kW
  • Bore dia.: 1.77 in
  • Stroke: 1.377 in
  • Speed range: 1200-8500 rpm
  • Weight: 6.72 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 26x12; 28x10; 28x12; 30x10; 30x8
    Propeller 3-bladed / à 3 pales: 24x10; 24x12; 25x12; 26x12

 

 

 

 

3W-110i R2
  • Cylinder capacity: 6.61 cu.in
  • Power: 10,5 HP; 7.83kW
  • Bore dia.: 1.77 in
  • Stroke: 1.377 in
  • Speed range: 1200-8500 rpm
  • Weight: 7.69 lbs incl. ignition
  • Crankshaft: 5 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 26x12; 28x10; 28x12; 30x10; 30x8
    Propeller 3-bladed / à 3 pales: 24x10; 24x12; 25x12; 26x12

 

 

 

 

 

 

3W-112iB4
  • our new four cylinder engine / first pictures here
  • Cylinder capacity: 6.96 cu.in
  • Power: 12,2 HP; 8,97 kW
  • Bore dia.: 1.42 in
  • Stroke: 1.02 in
  • Speed range: 1000 - 7000 rpm
  • Weight: 8.53lbs incl. ignition
  • Crankshaft: 5 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 28x12; 28x10; 26x14; 30x10
    Propeller 3-bladed / à 3 pales: 25x12; 26x12

 

 

 

 

 

3W 157xi B2
  • Cylinder capacity: 9.58
  • Power: 17 HP / HP 12,50 KW
  • Bore dia.: 1.97
  • Stroke: 1.57
  • Speed range: 1100-8500 rpm
  • Weight: 9.05 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 32 x 12; 32 x 14; 33 x 10
    Propeller 3-bladed / à 3 pales: 29 x 12; 30 x 12;


 

 

 

 

3W 157xi B2 TS
  • Cylinder capacity: 9.58
  • Power: 17,5 HP / HP 12,86 KW
  • Bore dia.: 1.97
  • Stroke: 1.57
  • Speed range: 1100-8500 rpm
  • Weight: 9.05 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V 2x Boxer Ignition
  • Propeller 2-bladed / à 2 pales: 32 x 12; 32 x 14; 33 x 10
    Propeller 3-bladed / à 3 pales: 29 x 12; 30 x 12;

 

 

 

 

 

3W 170xi B2
  • Cylinder capacity: 10.37
  • Power: 18,1 HP / 13,30 kW
  • Bore dia.: 2.0
  • Stroke: 1.61
  • Speed range: 1100-8500 rpm
  • Weight: 9.05 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 32 x 12; 32 x 14; 33 x 10
    Propeller 3-bladed / à 3 pales: 29 x 12; 30 x 12;

 

 

 

 

3W 170xi B2 TS
  • Cylinder capacity: 10.37
  • Power: 19 HP / 13,97 kW
  • Bore dia.: 2.0
  • Stroke: 1.61
  • Speed range: 1100-8500 rpm
  • Weight: 9.05 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V 2x Boxer Ignition
  • Propeller 2-bladed / à 2 pales: 32 x 12; 32 x 14; 33 x 10
    Propeller 3-bladed / à 3 pales: 29 x 12; 30 x 12;

 

 

 

 

 

3W-210iB2TS
  • Cylinder capacity: 12,81 cu.in
  • Power: 20,6 PS; 15,15 kW
  • Bore dia.: 2.16 in
  • Stroke: 1.73 in
  • Speed range: 1000 rpm - 7500 rpm
  • Weight: 10.52 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 34 x 12; 36 x 10
    Propeller 3-bladed / à 3 pales: 32 x 10

 

 

 

 

3W-220iB4
  • Cylinder capacity: 13.22 cu.in
  • Power: 21,8 HP; 16,03 kW
  • Bore dia.: 1.77 in
  • Stroke: 1.377 in
  • Speed range: 1000-7500 rpm
  • Weight: 12.61lbs incl. ignition
  • Crankshaft: 5 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 34 x 10; 35 x 10; 35 x 12; 36 x 10;
    Propeller 3-bladed / à 3 pales: 2 x 14; 30 x 12; 32 x 12;

 

 

 

 

 

  • Cylinder capacity:  15.62 cu.in
  • Power: 20 HP; 14,0 kW
  • Bore dia.: 1.929 in
  • Stroke: 1.50 in
  • Speed range: 800-7000 rpm
  • Weight: 14,99 lbs incl. ignition
  • oil-lubrication with separate gear oil pump
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 36 x 12 till 36 x 18;
    2-bladed;

 

 

  • Cylinder capacity: 16.7 cu.in
  • Power: 26 HP; 19,12 kW
  • Bore dia.: 2.32 in
  • Stroke: 1.97 in
  • Speed range: 1000-7000 rpm
  • Weight: 15.5 lb incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-bladed / à 2 pales: 36 x 12; 36 x 14
    Propeller 3-bladed / à 3 pales: 32 x 12; 34 x 12

 

 

 

 

 

3W-342iB2
  • Cylinder capacity:  20.86cu.in
  • Power: 31,5 HP; 23,16 kW
  • Bore dia.: 2.60 in
  • Stroke: 1.97 in
  • Speed range: 1200-6500 rpm
  • Weight: 18.91 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-Blatt: 36 x 16; 38 x 14; 40 x 12
    Propeller 3-Blatt: 36 x 12; 36 x 14
  • find first photos of the TS version in our 3W stuff gallery here

 

 

 

 

3W-342iB2 TS
  • Cylinder capacity:  20.86cu.in
  • Power: 32 HP; 23,53 kW
  • Bore dia.: 2.60 in
  • Stroke: 1.97 in
  • Speed range: 1200-6500 rpm
  • Weight: 19.46 lbs incl. ignition
  • Crankshaft: 3 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-Blatt: 36 x 16; 38 x 14; 40 x 12
    Propeller 3-Blatt: 36 x 12; 36 x 14
  • infos will bee added soon / find first photos in our 3W stuff gallery here

 

 

 

 

 

3W-684iB4
  • Cylinder capacity:  41.73 cu.in
  • Power: 60 HP; 44.13 kW
  • Bore dia.: 2.60 in
  • Stroke: 1.97 in
  • Speed range: 1200-5000 rpm
  • Weight: 35.27 lbs incl. ignition
  • Crankshaft: 5 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-Blatt: 40x18, 42x18, 28x40
  • find additional pictures in our 3W stuff gallery here

 

 

 

 

 

3W-684iB4 TS
  • Cylinder capacity:  41.73 cu.in
  • Power: 61 HP; 44,85 kW
  • Bore dia.: 2.60 in
  • Stroke: 1.97 in
  • Speed range: 1200-5000 rpm
  • Weight: 36.04 lbs incl. ignition
  • Crankshaft: 5 Ball bearings
  • Connecting rod: Needle bearings on both ends
  • Gasoline-Version: 1 : 50 - 1 : 80 Mix
  • Ignition: 6,0 V
  • Propeller 2-Blatt: 40x18, 42x18, 28x40
  • find additional pictures in our 3W stuff gallery here

 

 

 

 
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