Polini 221 long stroke now available at Scooter Center Vespa shop

Polini 210 goes Polini 221 long stroke! - Scooter Center - Version -
We wanted him from Polini and reported about it in 2011. Now the Polini 221 long stroke is finally here! From Monday, July 29, 2013 at Scooter Center ScootersHope deliverable

Cylinder -POLINI 221 long stroke aluminum, 60mm stroke- Vespa PX200, Rally200

The “old” Polini 207 gray cast iron cylinder is a feared opponent thanks to its enormous torque, but due to the material used, it is not considered to be thermally very durable.

Thanks to the new Polini 210 Alu, this shortcoming is now a thing of the past. Due to the significantly better thermal properties of the hard-coated aluminum cylinder, the kit now runs thermally much more stable than its older cast iron counterpart. If the version for the standard hub of 57mm has already become a real bestseller, Polini is finally laying it at our request a version for the use of a long stroke shaft with 60mm stroke according to! This results in a whopping 221ccm, more than enough to get around quickly with a vehicle that usually weighs less than 100kg.

Overcurrent channels
The channel design of the cylinder was also adopted here from the well-known cast iron cylinder, but the control angles have been slightly changed / extended.

Performance
If the cylinder with 210ccm is already good for almost 15 HP and 20 Nm of torque on the rear wheel, the long-stroke variant adds several coals. The lower area, which is already very strong, is reinforced again, and the power peak and the band are expanded upwards.
Of course, the cylinder reacts with even more power to further expansion stages.

-Setup
Depending on the purpose, ours is recommended here

Polini 221 long stroke cylinder
the new Polini 60mm crankshaft
Carburetor SI26if the original carburetor pan is to be retained.
Clutch Made inb Germany The Clutch: bgm superstrong
Exhaust bgm BigBox Vespa - available from September

And finally ...

The Polini is the tractor among the conversion cylinders. Its full torque and the good pulling power predestine this cylinder for the long tour as well as for the next traffic light duel! Now even stronger with an extra 10ccm!

Short facts:

Bore: 68,5mm
Stroke: 60mm
Connecting rod length: 110mm (series)
Displacement: 221ccm
Cylinder head: Included in delivery
Piston: cast iron, 2 piston rings
Special: crankshaft with 60mm stroke required

Attention:

Please always assemble piston rings carefully. Piston rings made of cast material are only elastic to a limited extent and break relatively quickly.
Some pistons have trapezoidally profiled piston rings (so-called keystone rings), these only fit in one installation position. If the ring does not move freely, please loosen it carefully and turn it back into place 'upside down'.