TECHNICAL DATA

 | BORE  | 22,50 mm
 | STROKE  | 22,70 mm
 | DISPLACEMENT  | 9,10 cm cub/ 0,55 inch cub
 | BORE/STROKE  | 1
 | OPENING EXHAUST  | 150º
 | OPENING ADMISSION  | 132°
 | INTAKE PORT OPENING  | 112°
 | OPENING OF THE ROTARY VALVE (AFTER LOWER PM)  | 46°
 | CLOSURE OF THE ROTARY VALVE ( AFTER UPPER PM)  | 33°
 | WEGTH OF THE PISTON/PISTON PIN/CONECTING ROD  | 14,80 grams
 | CRANKSHAFT DIAMETER  | 15,00 mm
 | CRANKSHAFT FLYWHEEL DIAMETER  | 28,50 mm
 | ROTARY VALVE DIAMETER  | 10,00 mm
 | FRONT BEARING  | (19,00 x 7,00 x 6,00) mm
 | REAR BEARING  | (28, 0 x 15,00 x 7,00 )mm
 | COVER PLATE BOLTS  | M3 x 10 mm (Allen)
 | CYLINDER HEAD BOLTS  | M3 x 15 mm (Allen)
 | CYLINDER BOLTS  | M3 x 30 mm (Allen)
 | PROPELLER NUTS  | M7x1
 | Inner diameter venturi | 6,00 mm
 | SILENCER WEIGHT EXHAUST SIDE    | 3.1747 OZ
|SILENCER WEIGTH  REAR  | 2,12 OZ
|EXHAUST ENGINE WEIGHT WITHOUT SILENCER  | 12.63 OZ
 | POWER  | 1,72 bhp@11,200/11.500 rpm 

Technical Specifications TH 40 CL ST and SL
Bore in mm: 20.00
Stroke in mm :22.00
Displacement in cubic centimeters/cubic in. 6.82/0.40
Stroke/Bore: Ratio 1
Exhaust Port Opening 150°
Intake Port Opening 132°
Lower Port Opening 112°
Rotary Valve Opening (lower MOC) 46°
Rotary Valve Closing (upper MOC) 33°
Piston/Pin/Connecting Rod Weight 14.80 grams
Inner Pin Diameter in mm 2.50 mm
Outer Pin Diameter in mm 5.00 mm
Crankshaft Diameter in mm 15.00 mm
Rotary Valve Diameter in mm 10.00 mm
Front Bearing in mm (19.00 x 7.00 x 6.00) mm
Main bearing in mm (28.0 x 15.00 x 7.00) mm
Crankcase cover bolt 3 x 10 mm (Allen)
Cylinder cover bolt 3 x 15 mm (Allen)
Cylinder bolt 3 x 30 mm (Allen)
Propeller bolt M 7
High-profile venturi Control Line (internal diameter) 6.00 mm
Weight of exhaust/silencer side outlet 108 grams
Weight of exhaust/silencer rear or side lightweight outlet 60 grams
Weight of muffler-type exhaust 30 gramsWeight of Control Line engine (without muffler) 358 gramsPower 1.55 bhp@13,000 rpm