2004 Suzuki GS500F 60mpg, Roketa 127cc 120mpg peak, 100mpg avg

[ProDigit]

Old engine, carb design. Peaks at 60mpg, with a 17/35t.
don't take it below 3k RPM. When the engine is fully hot it goes down to 2.5k rpm, weather permitting.

Looking forward to working on a 650cc next time.


Top mpg was from a Roketa 127cc step thru motorcycle, with a 31t rear.
clutch started slipping after a while, and at top speed the bike uses 96mpg regardless of 36 or 31t rear.
I recommend 34t smallest sprocket, down from 41t 80mpg stock, for eco riding.
36t is a good setting when being heavy, or riding with 2 up, or luggage.

Most optimal for city is a 5 spd, single cylinder, 150cc motorcycle with double overdrive gear doing ~3k rpm @ 45mph.
a 4spd 125 just doesn't have the power to maintain 40mph below 4k rpm, and accelerate smoothly.