Attention, not approved on public roads, only reserved for competition
Here is the PARMAKIT crankshaft which is normally intended for the famous 110cc kit for 46mm stroke 90mm rod but also for the 90cc kit for 46mm stroke 90mm rod. This crankshaft can also be placed on any other 80 kit on the market because it has a cage which accommodates the Ø12mm axis (like the original DERBI).
This crankshaft is of very high quality! It is cut from the best steels which are case hardened / treated. The diameter of the crank pin is 18mm, the connecting rod is a large ultra reinforced model mounted with anti friction wedge and increased reinforced connecting rod cage. The lubrication is very well defined both at the foot and at the head. The cage is also well increased… The origin of Ø12X15X15mm passes to Ø12X17X15mm in order to avoid friction and breakage. The balancing is very well defined, the finish both in machining and assembly is very neat! The masses are obviously full in order to offer more pre compression.
Summary :
Designed for high engine: PARMAKIT 110cc Ø55mm for 46mm stroke 90mm connecting rod & PARMAKIT 90cc Ø50mm for 46mm stroke 90mm connecting rod or other model
On engine: DERBI euro 3 & 4
Mass diameter: 76mm
Requires machining for assembly: yes quite simple
Bristles (bearing housing): Ø20mm as the origin
Cage: Ø12XØ17XL15mm
Balancing: yes
Masses: full
Connecting rod length: 90mm
Ø crank pin: 18mm
Stroke: 46mm (against 40mm for the original)
Reinforced: yes a foolproof
