Hi
Playing around in the garage I found I have a large number of 2 stroke barrels spare, about 8 different types.
I decided that some might find these interesting, so here goes.
Full selection
From the top left, going clockwise.
The first one is from a Rotax 122 engine, as used in the late Aprilia RS125. 54mm bore, 54.5mm stroke. Exhaust port opens 30mm from the top, transfer ports open 44mm from the top.
The next one is from a Rotax 127 engine, as used in the early 1987 model Aprilia AF1. 54mm bore, 54mm stroke. Exhaust port opens 28mm from the top, transfer ports open 43mm from the top.
The next one is from a Rotax 123 engine, as used in the early 1988 model Aprilia AF1 Sintesi, up to the about the mid 1990s on the RS125. This one is from an early AF1 Sintesi and has the gas operated power valve on it. 54mm bore, 54.5mm stroke. Exhaust port opens 29mm from the top, transfer ports open 44mm from the top.
The next one is a Polini big bore kit barrel for a Rotax 123. 60mm bore, 54.5mm stroke. Exhaust port opens 30mm from the top, transfer ports open 44mm from the top.
The next one is from an early Honda NSR125. 54mm bore, 54.5mm stroke. Exhaust port opens 30mm from the top, transfer ports open 44mm from the top. This is a crankcase reed valve engine.
The next one is from a Cagiva Freccia C12R. 56mm bore, 50.6mm stroke. Exhaust port opens 26mm from the top, transfer ports open 40mm from the top.
The next one is from a Polini big bore kit for the Cagiva Mito. 64mm bore, 50.6mm stroke. Exhaust port opens 28mm from the top, transfer ports open 41mm from the top.
The last one is from a Gilera CX125 engine, the one with the single sided front fork. Another crankcase reed valve engine. 56mm bore, 50.6mm stroke. Exhaust port opens 36mm from the top, transfer ports open 49mm from the top.
All the best
Keith
