this is gonna make me sound like a total *******, or a moron, or both. for the record, im neither...well everybody is an ass sometimes, lol
ok- you're launching it (as in you're completly staged, those 3ambers are starting to lite up, clutch is startin to come out as you anticipate the green lite), so why are you looking at the tach so intently?
for instance, when i stage, i bring the first lite on, look at the tach and bring the rpms up to my set point (depends on the track), then i look down the track with the tree in my periphial vision and bring the second lite on and wait for those three yellows to flash. my rite hand never moves till i start letting the clutch out, so theres no need to look at the tach.
im not saying what i do is rite, or that what you're doing is wrong, but anytime i see something different, in anything, riding style, bike design, setup, i like to check it out and learn from it. enlighten me