Hondas are engineering marvels!
You don't hear much about losses in gear systems but theres a lot.
The chain final drive on most inframes robs quite a bit.
I honestly don't have any factual idea how much power loss is is associated w/ my system. I know it's significant (1/4hp? 1/2?)but I get better low end by far and my top end is just as good or better than most of the one speed systems out there. So any greater losses are acceptably out weighed by gains! I should say I'm running a 79cc 2.5 hp Harborfreight and have not yet run the Huasheng w/ is around 2hp depending.
Ultra quick take offs and topping out at 40ish! 100+mpg! I can dig it.