Originally posted by BallPy
You have to shave around the crank bearing to get the fly wheel to go over it.
i had to shim the flywheel on my os tr12 also so i dont see that as a big deal. but if that thing says 2hp on the trinity site and the pixy black on the trinity site says 1.8hp and on the rossi site it says 1.49 then the siro out law thould have a real world rating of around 1.65hp. and that still seems a little bloated for box stock mass produced motor but casting proceses have come a long was since the cx12 was first produced it just might be that close. but for now my tr12 is a bit much and the only engine that runs with it is a rtu and that is too close to call. Next year i might try a siro out but i will wate and see what come out this winter. i think that os will have another wild child on the way