Crankshaft -BGM Pro RACING (for reed intake) full circle web, 51mm stroke, 97mm conrod- Vespa PK125 XL2, PK125 ETS (Ø=24mm cone)

Preview: Crankshaft -BGM Pro RACING (for reed intake) full circle web, 51mm stroke, 97mm conrod- Vespa PK125 XL2, PK125 ETS (Ø=24mm cone)

Description

The bgm PRO Racing Shaft is designed as a stable shaft for ESC class 1 drivers.
With 51mm stroke, 97mm connecting rod length and a stable Ø24mm alternator stub, it offers ideal conditions as a full cheek shaft to fully exploit the limits of this racing class.

The large crank webs offer significantly more overlap over the crankpin, resulting in a higher pressure dimension and thus maximum torsional resistance.

Due to the large diameter of the crank webs, the crankcase must be spindled to Ø88mm. A later ascent to the 54mm shaft for even more displacement and performance is possible without any problems, the cheek diameters are identical.

stroke: 51mm (std.)
crook length: 97mm (std.)
Stable crankshaft stub with Ø24mm
Proof against twisting due to large crank webs with high overlap
High-quality connecting rod with lubrication pockets
Full web design for high precompression

Assembly NOTE:

PK125 XL/ETS
In PK 125 XL2 and PK125 ETS engine housings, the standard alternator bearing of ETS/PX models is used (NBI253815).

V50, PV, ET3, PK50, PK80/125S
All other engine housings (V50, PV, ET3, PK50, PK125S etc.) require either a bushing on the alternator side for conversion to an NBI bearing (see accessories) or a conversion ball bearing (6005 C3). This bearing, which is narrower than a 6204 bearing, is fitted with a Ø47mm snap ring (align open end with oil hole in housing). This completely compensates the smaller width of the 6005 bearing

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€179.00 *

incl. VAT plus shipping costs

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

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Bearings
sizes:	15x19x20mm
Gudgeon pins
diameter:	15 mm
Crankshafts
stroke:	51 mm
thread rotor side:	M12x1,25 right-hand thread
thread drive side:	M10x1,5 right-hand thread
diameter crankwebs:	87 mm
diameter bearing seat rotor side:	25 mm
diameter bearing seat drive side:	17 mm
diameter oil seal seat rotor side:	24 mm
diameter oil seal seat drive side:	22.7 mm
full circle crankshaft:
filling material for full circle:	steel
rotary valve crankshaft:
crankcase has to be milled:
engine casing has to be modified:
Connecting rods
length connecting rod:	97 mm
diameter small end connecting rod eye:	19 mm