[Alan924]

And FYI, the bike is back on form again 👍👍👍

 

[Falkon45]

Mine didn't have a return spring. But, it does snap back closed on it's own without problem

 

[Motoguito]

Newbie question here, is a 17.5mm carb an upgrade to a 14mm across the whole rev range? (This would be on a 40cc liquid cooled 3 port BZM engine). I read 14mm can be better for low end running (less bogging before the WAHHHHH!), so good for short tracks where you are accelerating out slow corners a lot? Thanks!

 

[MrKitty]

Newbie question here, is a 17.5mm carb an upgrade to a 14mm across the whole rev range? (This would be on a 40cc liquid cooled 3 port BZM engine). I read 14mm can be better for low end running (less bogging before the WAHHHHH!), so good for short tracks where you are accelerating out slow corners a lot? Thanks!

Generally you will sacrifice high-end power for low end torque BZM bikes are dynoed for optimal power across the entire band and the gearing should be changed for the different tracks not the carburetor...