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Coming from an MX and road racing background I have no problem in shifting without the clutch. It's NOP (normal operating procedure) on MX bikes, both up and down the gearbox. And I don't care how *fast* you are with the clutch, you'd be losing time on a road race track if you used the clutch for every shift... That's one reason today's superbikes/sport bikes so often come equipped with "quick shifters" that micro-momentarily cut the ignition for shifts. You can accomplish the same with just the ever-so-slightest of throttle roll-off's (and I do mean nano-slight and quick) for upshifts. Downshifts require a bit more finesse, but can be accomplished. In a way they're actually easier on something like the S-10 because it has such a large amount of flywheel weight. You just have to be quick, precise, and willing to do your downshifts late...
One thing very important to remember here... These are dog-engagement gearboxes on these motorcycles. They do *NOT* have synchros, etc. to destroy. Sure, you can round off a gear-dog or engagement slot edge if you are ham-footed and clumsy, but if you just apply the barest modicum of care and precision then clutchless shifts are no problem, and don't cause damage, especially with today's tougher oils for cushioning.
That said, there is nothing wrong in shifting with the clutch, especially if you're in no hurry. It's a good habit to get into to master good, precise, and accurate clutch control, and it's a sign of a really accomplished rider to be precisely blipping the throttle and matching clutched downshifts during deceleration. But don't forget - ham-handed, sloppy clutch-work can be just as damaging to the bike as clumsy clutchless shifts... Only it becomes damaging to clutch baskets, plates, driveline cushions, etc. In other words, being less than accomplished with the clutch can do just as much damage, or actually more, than someone shifting without the clutch.
That's the great thing about motorsicles... They always reward accuracy and precision, and punish sloppiness!!!
Just my two centavos... YMMV.
Dallara
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