Crankshaft -BGM Pro (rotary valve) 60mm stroke, 128mm connecting rod, piston pin=Ø16mm- Vespa PX200, Rally200 (Ducati), Cosa200, Motovespa TX200 - suitable for Quattrini M244/VMC244 cylinder | Crankshafts | Crankshaft | Engines

Preview: Crankshaft -BGM Pro (rotary valve) 60mm stroke, 128mm connecting rod, piston pin=Ø16mm- Vespa PX200, Rally200 (Ducati), Cosa200, Motovespa TX200 - suitable for Quattrini M244/VMC244 cylinder

Description

Crankshaft -BGM Pro Touring (rotary valve) PX200, 60mm stroke, 128mm connecting rod, piston pin Ø16mm

Vespa PX200, Rally200 (VSE1T from 33997, Ducati ignition), Cosa200, Motovespa TX200 and spind led 80-150cc engine cases)
Special crankshaft wit h extra-long connecting rod, e.g. for Quattini M244, VMC Explorer 244 This crankshaft has been fitted with an extra-long connecting rod (128mm instead of 110mm). e.g. for Quattrini M244, VMC Explorer 244
This crankshaft has been equipped with an extra-long connecting rod (128mm instead of 110mm).
Perfect crankshaft for special engine conversions where a long connecting rod is required.
Due to the significantly better connecting rod ratio (0.23 instead of 0.29), engines with this shaft are also particularly smooth-running.

HUB: 60mm
CONNECTOR LENGTH: 128mm
INLET CONTROL: Rotary valve (cheek width like PX200)
PISTON PISTONS: Ø16mm (Ø15mm also possible with conversion piston pin bearing, see accessories)

MATERIAL
The bgm PRO Touring crankshafts are forged. The material is denser and therefore dissipates heat better, making it more resistant to distortion. In addition to the crank webs, the connecting rod is also forged

.BEARINGS
The lower connecting rod bearing is lubricated via two large lubrication slots and a total of four additional pockets on the side. The SSC racing bearing and the side thrust washers ensure a solid bearing. The upper connecting rod bearing is lubricated via two lubrication holes. The INA piston pin bearing is included with the crankshaft.

INLET ANGLE
Compared to many other racing shafts, the bgm PRO Touring shaft has a significantly better intake timing layout. With tuning cylinders, the standard shaft with its very short intake time cannot keep up. The bgm PRO shaft, on the other hand, closes on a PX engine case approx. 58° after top dead center (depending on the engine case, this varies ex works). The engine can be tuned well with these timing angles. TIP: If the intake is machined so that the crankshaft clears the intake slot earlier, additional power can be gained. A good value here is approx. 120° from TDC

.
The crankshaft design of the PX engines is based on that of the first 125 cc engines from 1960 with an output of approx. 5 hp. Unfortunately, Piaggio never really changed this design in the later increases in displacement. The load capacity of the crankshaft with the standard 200cc models with 12 hp has already been exhausted mathematically. The crank webs are very narrow and have very little overlap (web material which, viewed in diameter, is available above the lower crankpin). As a result, neither a particularly high pressure dimension nor a large crankpin can be used, as would be necessary (for the performance of today's engines).
The BGM PRO Touring crankshaft has a very high material quality and bearings. In addition, the crank pins are bonded for maximum torsional rigidity. Based on the positive experience gained in many thousands of test kilometers of our own engines in daily use, we approve the BGM PRO Touring crankshafts for engine outputs up to 25 hp. For engines in this power range, we recommend the use of a lightened pole wheel with a maximum weight of 2300gr.

CONCLUSION
The bottom line is that the bgm PRO crankshaft offers the highest quality in all respects with every component. Precision in manufacturing, the materials used and, above all, the precise balancing leave nothing to be desired. This guarantees extremely smooth and vibration-free engine running

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€249.00 *

incl. VAT plus shipping costs

Available immediately (delivery time 1-3 working days*)

P For this item you get fidelity point/s

OEM numbers (for comparison purposes only)
BGM PRO	BGM031128G

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