Hello fellow bikers,
I've just tuned up the transmission on an old Falcon rally bike (which ran fine until now).
Everything was fine when I flipped it over, and did the adjustments etc.
It was only when I started riding it, I noticed that the rear derailler seems to jolt when a certain amount of force is applied onto the pedals, apperantly only when the highest 2 gears are in use. I'm not sure exactly what exactly is happening, but it's very frustrating because I can't generate enough force to recreate this when the bike is stationary. It's strange because the derailler and all the gears seem to be alligned.