Specifications
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Engine |
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| Type | Aircooled Parallel twin cylinder two-stroke, forward incline |
| Porting | 6 port |
| Capacity | 398 cc |
| Bore | 64 mm (2.51 in) |
| Stroke | 62 mm (2.44 in) |
| Compression ratio | 6,2:1 |
| BHP | 40 (DIN) @ 7000 rpm |
| Lubrication | Seperate oil pomp using "autolube" system |
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Cylinder barrel |
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Bore size (standard) |
64 + 0.02 mm (2,51 + 0,0008 in) |
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Taper limit |
0,05 mm (0,002 in) |
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Ovality limit |
0,01 mm (0,0004 in) |
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Pistons |
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Clearance in bore |
0,035 - 0,040 mm (0,0013 - 0,0015 in) |
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Oversizes available |
+0.25, +0,50, +0,75, +1,0 mm (0,0095, 0,0019, 0,028, 0,039 in) |
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Piston rings |
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No. per piston |
2 |
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Type: |
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| Top | Dykes |
| Second | Plain |
| End gap | 0,3 - 0,5 mm (0,012 - 0,019 in) |
| Gearbox | |
| Type | 6-speed constant mesh |
| Ratios: | |
| 1st gear | 2,571:1 |
| 2nd gear | 1,778:1 |
| 3rd gear | 1,318:1 |
| 4th gear | 1,083:1 |
| 5th gear | 0,962:1 |
| 6th gear | 0,889:1 |
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Clutch |
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Type |
Wet, multi-plate |
| No, of plates: | |
| Friction | 7 |
| Plain | 6 |
| Clutch springs: | |
| No. of | 6 |
| Free length | 36,4 mm (1,423 in) |
| Wear limit | 35,4 mm (1,393 in) |
| friction plate thickness | 3,0 mm (0,1181 in) |
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Wear limit |
2,7 mm (0,1062 in) |
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More specs coming up! |
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