Mario,


The OS really isn't worth more than the Super Tigre, not a bit more.

In fact, the same-size G90 costs significantly less than the OS.61FX.


Dave Gierke who did the .61 size engine shoot-out in MAN magazine 05/03 wrote the OS has a rich mid-range and a 'wet' throttle response, something that only the Super Tigre carburettor allows you to separately adjust for (among low cost engines).

Also, the Super-Tiger is ringed and the OS is an ABN.
The ST will last just as long until an overhaul is necessary, but the OS would cost four times as much to do it...

The ST is a bit heavier, on account of the muffler, however.

What is there to think about?