Category:
Lightweight Sport Naked Motorcycle
Target Audience:
Enthusiasts seeking an agile, spirited, and relatively simple two-stroke motorcycle for urban commuting and recreational riding.
Competitors:
Yamaha TZR series, Aprilia RS/Tuono (early models), Suzuki RG series, Kawasaki KR-1/KR-1S
Engine Type:
Vibrant 2-stroke engine known for its punchy power delivery.
Handling:
Lightweight chassis and agile geometry for nimble handling.
Design:
Stripped-down, 'naked' styling typical of the era, emphasizing mechanical components.
Engine:
Complete disassembly, assembly, tuning, lubrication, cooling, ignition, fuel delivery (carburetor)
Transmission:
Gearbox operation, clutch service, gear selection mechanism, lubrication
Chassis:
Frame inspection, suspension (front forks, rear shock absorber), steering, wheel bearings
Brakes:
Hydraulic brake system (front and rear calipers, master cylinders, fluid replacement, bleeding), disc and pad wear
Electrical System:
Wiring diagrams, lighting, ignition system, battery, starter motor, charging system, instrument cluster
Fuel System:
Carburetor identification, jetting, float level adjustment, fuel lines, fuel tap
Cooling System:
Liquid cooling system (radiator, water pump, hoses, thermostat)
Maintenance:
Regular service checks, oil changes, filter replacements, chain adjustment, spark plug service
Troubleshooting:
Diagnostic charts for common problems (starting issues, poor performance, electrical faults)
Repair:
Detailed step-by-step instructions for component replacement and overhaul
Rebuilds:
Engine, transmission, and carburetor rebuild procedures
Technical Specifications:
Torque values, clearances, fluid capacities, electrical resistance, timing settings
Depth:
Comprehensive, covering routine maintenance to complete engine rebuilds. Includes diagnostic procedures and specifications.
Displacement:
Likely 125cc or potentially 50cc/75cc variants (exact for Planet needs confirmation, assuming 125cc for commonality).
Bore X Stroke:
Specific to the displacement (e.g., for 125cc, ~54mm x 54.5mm).
Compression Ratio:
Typically around 7.0:1 to 8.5:1 for 2-stroke engines of this era.
Induction:
Single or dual carburetors (e.g., Dell'Orto PHBH 28/30mm, Mikuni VM series).
Cooling Method:
Liquid-cooled
Lubrication:
Pre-mix or separate oil injection system
Horsepower:
Approx. 15-30 HP (depending on exact model and tuning, 125cc variants typically in this range)
Torque:
Specific torque figures vary, but characteristic of 2-stroke mid-range punch.
Carburetor Type:
Single or Twin Carburetor Setup (e.g., Dell'Orto, Mikuni)
Fuel Type:
Unleaded gasoline, typically 95 RON or higher, with 2-stroke oil mixture.
Length:
Approx. 2000-2100 mm (typical for 125cc naked bikes)
Width:
Approx. 750-850 mm
Height:
Approx. 1100-1200 mm (seat height varies)
Dry Weight:
Approx. 120-140 kg (estimated)
Wet Weight:
Approx. 135-155 kg (estimated, with fluids)
Crash Test Data:
Motorcycle safety ratings are not typically standardized like cars; focus is on component integrity and handling.
Braking System:
Front disc brake, Rear disc brake (common for this era performance).
Suspension:
Telescopic front forks, Monoshock rear suspension for stability and control.
Frame Construction:
Steel trellis or perimeter frame for rigidity.
Oil Change Engine:
Check level frequently, change as per manual, typically every 3,000-5,000 km or annually.
Spark Plug Replacement:
Check/clean every 2,000-3,000 km, replace every 5,000-7,000 km (specific plug type and gap are critical).
Chain Lubrication Adjustment:
Lubricate every 500 km or after riding in wet conditions. Adjust tension as per manual (typically 20-30mm slack).
Air Filter Cleaning:
Inspect and clean every 3,000-5,000 km, replace if damaged.
Coolant Replacement:
Typically every 2 years or 24,000 km, depending on coolant type.
Engine Oil Type:
Not applicable (2-stroke, uses oil injection or pre-mix). For gearbox: SAE 80W/90 GL-4 gear oil.
Brake Fluid:
DOT 4 Hydraulic Brake Fluid
Coolant:
Ethylene Glycol based coolant (50/50 mix with distilled water recommended).
2 Stroke Wear:
Piston ring wear, cylinder scoring, exhaust power valve issues (if equipped) due to high-performance nature.
Carburetor Tuning:
Can be sensitive to altitude, temperature, and modifications; requires periodic tuning and cleaning.
Electrical Gremlins:
Older wiring harnesses can degrade, leading to intermittent electrical issues; careful inspection and maintenance are key.
Suspension Seals:
Worn fork seals and rear shock absorber seals are common with age and mileage.
Manufacturer Origin:
Cagiva is an Italian motorcycle manufacturer, known for its performance-oriented and often distinctive designs.
Brand Focus:
Cagiva often focused on sporty motorcycles, including 2-stroke models and racing heritage (e.g., Grand Prix involvement).
Predecessors:
Cagiva's line of smaller displacement 2-stroke sports bikes, evolving from earlier models like the Mito.
Design Philosophy:
A blend of performance, aggressive styling, and a focus on rider engagement, typical of Italian sportbikes.
Production Period:
The Cagiva Planet was produced primarily in the mid-to-late 1990s, with variations possibly extending slightly beyond.
Manufacturing Location:
Italy
