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Crankshaft long stroke -BGM Evolution 2 55mm stroke, 110mm conrod, Ø=90mm webs- Piaggio Maxi 2-stroke - incl. spacer, Aprilia SR125, Gilera Runner 125FX, 180FXR, Italjet Dragster 125, 180, Piaggio SKR125, SKR150, TPH125, Skipper125, Skipper150, Hexag
Part no.:
BGM038025
Description
The BGM EVOLUTION crankshafts are very cleanly processed and convince with well thought-out details:
AI-translation
- performance-optimized solid beam design
- well balanced (special balancing only available on BGM PRO shafts)
- stable connecting rod
- available with 52mm (std.) and 55mm stroke
The long stroke version with 55mm stroke has a longer connecting rod (110mm instead of 105mm as series). This provides a smoother running, less piston load and more leeway for adjusting the cylinder control angle.
FAZIT
Very nice stable and well balanced crankshaft which should be the basis for a healthy engine in every engine.
SPECIAL FEATURES LONG TRAVEL
The 55mm long stroke shaft makes it possible to get more displacement and longer cylinder control angles in an elegant way. The performance can be increased significantly again.
Please note that the additional stroke of 3mm has to be compensated with a corresponding compensation seal of 1.5mm at the cylinder head or cylinder base. The supplied spacer with 5mm only provides for the compensation of the longer connecting rod. The additional stroke of 3mm must therefore be additionally compensated by a 1.5mm gasket or a correspondingly machined cylinder head.
A foot gasket increases the control angle of the cylinder and thus provides the prerequisite for a sporty and speed-oriented power delivery. For full power, however, the exhaust angle must often be increased to compensate for the disproportionately increased overflow angle compared to the exhaust angle. For everyday engines it is usually recommended to compensate the stroke with a 1.5mm head gasket (or a corresponding cylinder head).
NOTE
The lifting of the cylinder at the cylinder base, which is necessary with long-stroke crankshafts, also shifts the mounting point of the exhaust. This may have to be modified accordingly in order to be able to mount it on the engine/cylinder again without tension.
AI-translation
€238.90 *
incl. VAT plus shipping costs
Available immediately (delivery time 1-3 working days*)
P
For this item you get
fidelity point/s
| General | |
|---|---|
| EAN: | 4250366600659 |
| Bearings | |
| sizes: | 16x20x20mm |
| Gudgeon pins | |
| diameter: | 16 mm |
| Crankshafts | |
| stroke: | 55 mm |
| thread rotor side: | M12x1,25 right-hand thread |
| thread drive side: | M12x1,25 right-hand thread |
| diameter crankwebs: | 90 mm |
| width crankwebs: | 46.4 mm |
| diameter bearing seat rotor side: | 25 mm |
| diameter bearing seat drive side: | 25 mm |
| diameter oil seal seat rotor side: | 25 mm |
| diameter oil seal seat drive side: | 25 mm |
| full circle crankshaft: | |
| filling material for full circle: | steel |
| material balancing weights: | aluminium |
| rotary valve crankshaft: | |
| crankcase has to be milled: | |
| engine casing has to be modified: | |
| diameter variator pivot: | 17 mm |
| variator pivot type: | toothed |
| can be used with genuine variator: | yes |
| Connecting rods | |
| length connecting rod: | 110 mm |
| thickness connecting rod: | 5.5 mm |
| diameter small end connecting rod eye: | 20 mm |
| lubricating hole at small end bearing: | yes |
| diameter crankpin: | 20 mm |
| lubricating hole at crankpin bearing: | slot |
| crankpin shims: | yes |
| Customers alternatively searched for | |
|---|---|
| Kurbelwelle | Krukas | Vilebrequin | Cigüeñal | Albero | Crankshaft | Crank | Albero Motore | |
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