[Bob In Ct]

"I believe this explains why a chassis dyno measures less torque/hp at the wheels if you measure in 3rd gear than in 4th gear. The lower the gear the quicker the engine revs up and the more energy is consumed by inertia."

Hey OldDog

I always thought the reason you used 4th gear was to eliminate a gear which did not have a 1:1 ratio, which is usually the case in 4th.

Bob