No clutch when upshifting, huh?

[Calliway]

I dont do it very much either but it is easy when you "know" your bike. Follow OnD's instructions, he has described how to do it better then I ever could.

[TattooedRedHead]

Wow, so it can be done...

Thanks for the "preload" advice, I'll give it a try sometime upshifting.

I didn't even think it was mechanically possible, the way I understood clutches is that the plates are pressed together at all times unless the clutch is pushed ( car ) or pulled ( motorcycle ), so logically I wouldn't think that you could force the plates to "shift" unless using the clutch handle.

Hmm... Fascinating.

--Kory

[KevyKev]

It really has nothing to due with the clutch/plates as much as it has to do with the gears and the 'style' of cut that they are (I believe). I don't recall all the technical terms for it, but with many motorcycles the way the gears are cut allows them to move from gear/cog to the next rather easily----at least upshifting the way we are talking about----I think.
Kevin

[Fullchat]

Have found that the clutchless gearchange up and down the box is easier and smoother if the chain is well adjusted.

[cmadden]

As someone stated earlier, you can also downshift in this same manner. It should be noted that this can potentially throw your bike forward. The rapid gear change - if not engaged at the correct time - puts you into a lower gear and the engine speed jumps us swiftly while the bike is still travelling the same speed causing you to engine brake...in some cases quite violently.

[kremin]

Exactly as said by OAD, upchanges are often smoother (and quicker) as the change dogs will only go in when they are aligned. The gears are constant mesh in these gearboxes so no worry there at all.
Only thing. I like to have a few miles on the odometer before I start doing it. Got 5500km on mine figure it's anytime now.

Way back I had a commando, used to break clutch cables regularly (monthly). Clutchless changes were the order of the day.

Give it a go, throttle control is the most important when changing down. Maybe give this a miss for a little while

Cheers

[Vinyle]

something you probably dont really need to do
unless of course your down at the track trying to
take the bikes that redline at +14k

[TattooedRedHead]

Practiced it for about an hour and a half tonight at a local empty strip of asphalt.

Interesting mechanics, and won't use it a lot unless necessary, maybe I'll do a track day soon and really give my transmission a work out.

Thanks for everyones information and mechanical knowledge on the subject.

--Kory

[oldndumb]

It is not just a "go fast" technique. It makes for smoother shifts, and many experts believe that it is easier on the xmission. It is also good to know how to do it properly if your clutch cable ever breaks.

[flyingbiker]

Originally Posted by oldndumb

It is not just a "go fast" technique. It makes for smoother shifts, and many experts believe that it is easier on the xmission. It is also good to know how to do it properly if your clutch cable ever breaks.

Absolutely agree - I do it for smoothness (esp when carrying a pillion), not performance and find it works best for me when not pushing hard (can better control the throttle as the gear slips in). When accelarating hard I use the clutch to compensate for being more clumsy with the shift.