Difference between revisions of "Derbi Variant Piston Port Specifications"
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*Compression 8.5:1 | *Compression 8.5:1 | ||
*Rotation: CCW Facing Magneto | *Rotation: CCW Facing Magneto | ||
| + | '''Transmission Oil''' | ||
| + | *Capacity is 400cc (fill to the fill hole located under the pedal shaft) | ||
| + | *SAE 80 EP (hard to find, do not use 80/90 that is gear oil) | ||
| + | *SAE 20W50 | ||
'''Main Bearings''' | '''Main Bearings''' | ||
*17x40x12mm - 6203 | *17x40x12mm - 6203 | ||
Revision as of 22:56, 6 June 2017
Engine
Specifications
- Stroke: 43mm
- Bore: 38mm
- Displacement: 48.7cc
- Compression 8.5:1
- Rotation: CCW Facing Magneto
Transmission Oil
- Capacity is 400cc (fill to the fill hole located under the pedal shaft)
- SAE 80 EP (hard to find, do not use 80/90 that is gear oil)
- SAE 20W50
Main Bearings
- 17x40x12mm - 6203
- 17x47x14mm - 6303
Main Seals
- 17x28x6mm - Qty2
Case Bearings
- 25x52x15mm - 6205
- 15x42x13mm - 6302 (Watch out for cheap 6302 bearings, some come 16x42x13mm)
Case Seals
- 16x24x4mm - Qty2
- 15x30x7mm
- 25x40x7mm
Carburetor
Stock Type
- Dellorto 12/12
Jet Size
- ? (probably somewhere in the 50s)
Ignition
Specifications
- Motoplat
- 6V 12-15W
Timing Advance
- 1.8mm Before TDC (21 Degrees)
Point Gap
- 0.35mm to 0.4mm
Spark Plug
- NGK B7HS
- Champion L82
Lighting
Bulbs
- Headligh 6V 21W
- Taillight 6V 5W
- Stoplight 6V 10W
- Speedo 6V 1.5W
Drivetrain
Chain
- 415 Size
- ? Links
Standard Front Sprocket
- ? T
Standard Rear Sprocket
- 30T
Variant Frame
Headset Bearings
- 3/16" loose ball bearings - Qty46
- Bearing Services part #STL-3/16GR25
Spoked Wheel Bearings
- 12x32x10mm - 6201-2RS - Qty4
Spoked Wheel Brake Pads
- 105x20mm - Qty2
- Tomos pads could fit with modification
Tires
- 2.25" x 17"
