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Nah motorbike gearboxes are different from cars. If you can unload them for a fraction of a second while you change you don't need a clutch at all. Much easier (on the road at least) to try it changing up. Just chop the throttle a fraction to unload and quickly bang it up - with a bit of practice you can make it almost seamless. Start with the higher gears, not the 1-2 shift. Doesn't hurt the box at all.
You can do the same going down but it's very tricky to unload the box the same - you'd need to have the back wheel almost off the ground on the brakes really. Big difference to off road - MX you just stamp down on the shifter, no clutch at all as there's less impact through the transmission from loose surfaces.
Jung-
Ah I see.
I missed my footing after a junction yesterday and as I accelerated and went to get my foot to shift up, I clutchlessed down. Gotta say that was an incredibly unpleasant experience as the bike dived and revs went through the roof. Do not want.
I think I have shifted up without realising it on occasion. Even the instructor guy had remarked on it. Glad to learn it’s not a bad habit.
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Mx boxes last in hours, while road bikes last in miles. After having seen boxes rebuilt that have had clutch less changes I stopped doing them. Have had cars with straight cut gears and no synchromesh so changing with the clutch required double de clutching or rev matching.
pdlouche
lynx
Is that only true of particular bikes? I thought the whole idea of a wet clutch was that it’s for constant use, so to avoid clutchless shifts?