Wenger explained that the beginning of design was to size the valves required for airflow at the desired rpm. Valve sizes dictate bore size. Engine durability requires liquid cooling and plain journal main and rod bearings. The FTR has them. The use of four smaller valves per cylinder allows the accurate valve control essential as engines, geared to accelerate off the corners, must overrev at the ends of the straights. Although the Indian FT engine makes its power at 10,000, we saw at least 11,400 in a demo dyno run. At its 10,000-rpm power peak, the FT’s peak piston acceleration is only half that of a World Superbike ZX-10R, and up at 11,400 it’s still only 65 percent. That’s low-risk design, providing for higher revs and higher power if needed.