My thing with OS is reliability. My first year in nitro touring was all about one thing. Reliability! So last year I went with a 12 TR. It worked great. Was slightly under powered on the straight, but was awsome on the in field.
This year I wanted a little more power and was willing to sacrifice reliability a bit. BIG MISTAKE! I've missed more races because of engine problems this year, than I did all last season! Tuning and air leak problems were consistent with my Sirio.(original, not the new and improved EVO2). I even snapped the shaft on it!
So I'm getting back to basics.....my old reliable OS. I stuck my 12 TR back in after it had been in preserved storage for almost a year. Fired it up, readjusted it for 30% nitro (I ran 20% last year) and it was instantly more reliable than my engine this year.
Now comes my R-Spec. I'm hoping it will bring the reliability of OS with a little more 'Sirio like' power on the straight.<fingers crossed>
All I'm really hoping for is that the 11A carb is as easy to work with as my 10J was. Cause after working with my Sirio, I must say that so far
, I'm not a big fan of true three needle carbs. Damned...low end needle....