VM34mm carbs from Hoos on a stock motor. Default jetting from Hoos. See pic for exhaust set up.
Bike runs really well for spirited riding, always starts immediately. I set up a wideband AFR meter. Generally runs between 12.5 and 14.0 which all feels good. Heavy throttle stuff ~13
Except midrange cruise at 20-25% throttle 2500-3500 rpm it is fat at 12.0. This feels like the place for efficiency to burn like 14.5.
And the other place is WOT gets super fat and stumbles <12 closer to ~11 or even fatter.
I’ve seen a chart in here that shows what part of different ranges get tuned with main jet vs needle and maybe has another axis with rpm? I can’t find it.
Any help with knowing what knobs to fiddle with would be appreciated. Thx
Bike runs really well for spirited riding, always starts immediately. I set up a wideband AFR meter. Generally runs between 12.5 and 14.0 which all feels good. Heavy throttle stuff ~13
Except midrange cruise at 20-25% throttle 2500-3500 rpm it is fat at 12.0. This feels like the place for efficiency to burn like 14.5.
And the other place is WOT gets super fat and stumbles <12 closer to ~11 or even fatter.
I’ve seen a chart in here that shows what part of different ranges get tuned with main jet vs needle and maybe has another axis with rpm? I can’t find it.
Any help with knowing what knobs to fiddle with would be appreciated. Thx