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Cylinder -AF RB25 250 cc- Lambretta
Part no.:
8000047
Description
Bore 72 mm, stroke 60 mm, Nikasil coated aluminium cylinder: Exhaust 182°, overflow 128°, inlet - diaphragm controlled, exhaust 27°.
The RB25 kit is a superior brother to the well proven TS1 cylinder from AF in terms of performance and displacement.
The cylinder layout is clearly inspired by the MotoX range.
The inlet is controlled by two very wide 4 valve diaphragms. The arrangement of the diaphragms results in a V-shape.
From the inlet port, channels go directly into the overflowers, and there is also a boost port.
The area of the outlet has been increased by two secondary outlet channels.
The piston used is the ASSO forged piston, modified from the Rapido 250, with two thin 1 mm chrome rings.
The RB 250 is designed for a crankshaft with 60 mm stroke. To prevent the cylinder base from becoming too thin with the 72 mm piston, the diameter of the cylinder base is larger. The engine housing has to be spindled up accordingly to be able to install the cylinder. The stud bolts must be moved not .
Included in the scope of delivery is the cylinder and the piston, the diaphragm and the intake manifold.
In terms of processing, it cannot yet hold a candle to the TS1 produced by the Italian top foundry Gilardoni. Neither of the casting nor of the coating quality.
AI-translation
The RB25 kit is a superior brother to the well proven TS1 cylinder from AF in terms of performance and displacement.
The cylinder layout is clearly inspired by the MotoX range.
The inlet is controlled by two very wide 4 valve diaphragms. The arrangement of the diaphragms results in a V-shape.
From the inlet port, channels go directly into the overflowers, and there is also a boost port.
The area of the outlet has been increased by two secondary outlet channels.
The piston used is the ASSO forged piston, modified from the Rapido 250, with two thin 1 mm chrome rings.
The RB 250 is designed for a crankshaft with 60 mm stroke. To prevent the cylinder base from becoming too thin with the 72 mm piston, the diameter of the cylinder base is larger. The engine housing has to be spindled up accordingly to be able to install the cylinder. The stud bolts must be moved not .
Included in the scope of delivery is the cylinder and the piston, the diaphragm and the intake manifold.
In terms of processing, it cannot yet hold a candle to the TS1 produced by the Italian top foundry Gilardoni. Neither of the casting nor of the coating quality.
AI-translation
This item is currently not available.
€869.00 *
incl. VAT plus shipping costs
The item is ordered and will be in stock soon
P
For this item you get
fidelity point/s
| General | |
|---|---|
| performance class: | racing, sport |
| Gudgeon pins | |
| diameter: | 16 mm |
| Cylinders | |
| displacement: | 244 cm³ |
| bore: | 72 mm |
| engine type: | 2-stroke |
| type of cooling: | air cooled |
| material: | aluminium |
| material piston cylinder surface: | Ceramic |
| cylinder head inclusive: | |
| cylinder gasket set inclusive: | |
| number of boost ports: | 3 |
| shape exhaust port: | triple port |
| exhaust mounting: | flange |
| flange type: | 2 studs |
| exhaust bolt pitch: | 60 mm |
| thread exhaust studs: | M7 |
| Crankshafts | |
| stroke: | 60 mm |
| Pistons | |
| number of piston rings: | 2 |
| production method piston: | forged |
| Piston rings | |
| piston ring type: | common ring |
| thickness rings: | 1,0mm |
| Circlips | |
| circlip type: | double G-type |
| wire size of circlip: | 1,25mm |
Please inform me once the product is available again.
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