[silverlock]

Thanks for the feedback on the calculator! Need to spend some time this holiday weekend building in presets for common 915 configs (915/61, early mid-years, etc), a comparison mode and definitely agree that vertical lines from the shift RPM down to the next gear will help with assessing the gaps.

Nearly all of my fun driving is spirited, spicy group rallies (Ruckus, Ruchlos, Targa Carolina, Overcrest) and as many weekends with friends in NY, PA, VT or WV just ripping around. Most of that is 2nd-3rd — rarely am I ever shifting to 4th outside of a “get to the next fun bit”. It’s a commuter gear for me. AX 4-5 times a year when I can squeeze it in around work travel & everything else. Track days maybe 2-3 times a year at best (time consuming).

One of my favorite roads in NC had us hitting the limiter in 2nd, trying to balance shifting into 3rd without losing time shifting back down for the next corner, or keeping RPMs up at the bottom of 2nd on the really tight sections with a careful clutch kick to avoid bogging down below 3.5k RPM (with varying success). Getting the ratios right for those kind of roads is the goal.