Attention, not approved on public roads, only for competition.
Here is the PARMAKIT crankshaft which is normally famous for the 110cc kit for 46mm rod 85mm race but also the 90cc kit for 46mm rod 85mm stroke. This crankshaft can also be placed on any other 80cc kit market because it has a cage which houses the axes of Ø12mm (as originally am6).
However with his rod 90mm, you will stall the 5mm cylinder! PARMAKIT has extend the turnbuckle 85mm to 90mm to change the motor movement but also to avoid the sustained pressure! Ideal for passing an aluminum TPR kit Ø50mm 86cc to 90cc for example (do not ask kits too large diagrams! A kit as the TPR which has diagrams 190 ° with such race will go very well with a bilge 6mm (+ 5mm length rod and + 1mm for the race of increase) on a 46mm without passing in awfully high diagrams, this still allows to approach the race said "square"!
This crankshaft is of very high quality! It is cut in best steels that are hardened / treated. The diameter of the pin is 18 mm, the rod is a large model ultra-reinforced mounted with antifriction wedges and shaft head plus enhanced rod. The lubrication are very well defined in both foot head. The cage is also good ... plus. The origin of Ø12X15X15mm passes Ø12X17X15mm to prevent friction and breakage.
Balancing is very well defined, finishing both machining assembly that is very neat! The masses are full recess to provide more pre compression. In relation to the crankshaft 46mm rod 85mm stroke, this vilo will offer more high speed and completely liberate senior regime report a 85mm rod, plain 90mm offers less friction thimble upper bound the rod angle. We regret that as SIMONINI, it preserves silks (crank housing) in Ø17mm.
summary:
-Prévue For high engine: PARMAKIT 110cc Ø55mm for race 90mm rod 46mm & PARMAKIT 90cc Ø50mm for 46mm rod 90mm stroke or other model
-On Engine: minarelli am6
-Diameter Masses: 76mm
-Requires Machining for assembly: yes quite simple
-Soies (Bearing housing): Ø17mm like the origin
-Cage: Ø12XØ17XL15mm
-Équilibrage: Yes
Masses: full
-length Rod: 90mm (+ 5mm Originally report)
-Ø Pin: 18mm
-Course: 46mm (against 39mm for the origin)
-Strengthens: Yes to all tests
Fits the 50cc motorcycles gearbox equipped minarelli am3, am4, am5, am6 euro 1 am6 euro 2:
Aprilia RS 50cc am6 from 1997 to 2006 (new attention after 2006 engine derbi euro 3)
Aprilia RX am6 engine (new attention after 2006 engine derbi euro 3)
Am6 APRILIA MX engine (new attention after 2006 engine derbi euro 3)
Aprilia Tuono 1997 am6 50cc engine 2006 (new attention after 2006 engine derbi euro 3)
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