BLACK DEVIL PRO - HAND START
PRODUCT INFORMATION
Weight, NEW exhaust, airbox and four rubber mounts included kg. 13,95
TECHNICAL FEATURES
- Single cylinder air cooled
- Two stroke
- Bore 65 mm
- Stroke 52 mm
- Total displacement 172.5 cc
- Compression ratio 11:1
- Fuel delivery to the crankcase: four blade reed-valve system connected to the crankcase
- Diaphragm carburettor WB37
- Reducer with Poly V belt available in 1:2,2, 1: 2,3, 1: 2.5, 1: 2,6, 1: 2.7, 1: 2.88
- Continuous operating temperature 180° C, maximum temperature 240° C
- Engine mounting: by 5 shock absorbing rubber mounts
- Propeller rotation: counterclockwise
- Maximum RPM 7900 RPM
- Spark plug NGK B9ES – NGK B9ERS – DENSO W27ESR-U
STRUCTURAL FEATURES
- Manual starter included
- Crankcases molten in G-Al Si 9 UNI 3051 alloy subsequently treated
Six port distribution system - Cylinder in light silicon alloy with Cermetal protective coating
- Piston with ultra-light structure reinforced with side flaps for heat dispersion. Flaps in 2 segments, 1.2 mm S10 chrome-plated semitrapezoidal cast iron.
- Head in die cast aluminium alloy with high percentage of silicon and concentric combustion chamber, calculated squish
- Drive shaft in 18 Ni Cr Mo5 with 5 thermic treatments on every component
- Connecting rod in copper plated steel 18Ni Cr Mo 5 joined to the drive shaft through very precise high speed silver-plated roller bearings
- Roller bearings fit for high speed class C3
- Seal ring in Witon with very high resistance and long duration
