[genman]

Hi...watched a video online and noticed that when the guy pulled a wheelie the Speedo read zero after a fee seconds so I'm assuming the Speedo reads off the front wheel this allowing sprockets to be changed without messing the speedo

 

[DenverYZF]

You are correct. I noticed it the first time I had my bike up on race stands, and I was kind of surprised to be honest.

 

[genman]

Happy days...always hated jap bikes with the pickup from the gearbox...speedohealers etc just add more potential problems...i like it simple.
Main reason I asked is to have options for gearing the bike for specific touring or track work should the chance arise.
I've had Aprilias for years and always kept 4 or 5 sprocket combos... thanks for the info.