Clutchless changes

[mojitomax]

clutchless changes feel great. Espeially when youre "making progress" out of a fast sweeping corner or roundabout. If I clutchless change I only do it at high rpm and so find I end up riding like a hooligan! lots of in though, although in my bike manual it specifically says that the gearbox is NOT designed to withstand clutchless changes (1994 far 600). No proba on the road though. Do you think clutchless changes will break it or is yamaha just being über cautious?

[rhinochopig]

I had a trickshifter fitted to my blackbird powered westy. That was a very clever bit of kit. It gave you, effectively, a semi-auto gearbox. It was particularly cool coming down the box hearing the engine auto-blipping to match engine and road speed. It calculated what revs were needed by monitoring the vacuum pressure in the TBs.

Does anyone run one on a bike on here?

[Mr OCD]

Clutchless all the time here once in 2nd gear at any revs... NEVER down the box though ... alot would depend on the bike but the Cat feels happy clutchless shifting from 2nd through to 6th rather than using the clutch.

[Graham]

If im pressing on and accelerating hard, I'll change clutchless, if im pootling or in traffic I use the clutch..

[Brite spark]

mojitomax said:

. Do you think clutchless changes will break it or is yamaha just being über cautious?

tried doing clutchless upshifting on the r6 again today and it will do it easily below 4000rpm, but not above it without the clutch.

[King Herald]

Aubrey said:

Just to clarify, I always use the clutch when changing 'down' the gears, but not when changing 'up' the gears.

Changing down can be as smooth as going up, but you have to blip the throttle to match the new gear as you shift the gear, else it jerks horribly. I found it harder to master than clutchless snicking up the box.

[Stu R]

King Herald said:

Aubrey said:

Just to clarify, I always use the clutch when changing 'down' the gears, but not when changing 'up' the gears.

Changing down can be as smooth as going up, but you have to blip the throttle to match the new gear as you shift the gear, else it jerks horribly. I found it harder to master than clutchless snicking up the box.

you also run the risk of locking the rear wheel up when trying clutchless downchanges, personally I wouldn't bother, just going up.

[Rach81]

I find it really clunky and jerky, am I doing something wrong?

[Stu R]

Rach81 said:

I find it really clunky and jerky, am I doing something wrong?

sounds like a typical honda gearbox do you find it a bit notchy with clutched changes?

just put plenty of pressure on the pedal before you plan to shift, come off the throttle completely and it's home, back on the throttle to maintain whatever rate of acceleration it is you want to achieve. If it's overly notchy try it a bit higher up the revs is all I can suggest though as I'm not an expert. Can't really go into throttle control, I just take a big handful of throttle straight away really. The RSVR made it painfully easy to clutchless change, the box was as slick as you could want and it only missed 1 shift in 3 weeks / 3000 miles.

If I'm lower down the revs or just pootling around I don't bother unless I'm being especially lazy or trying to bring my jacket back to waist level from somewhere around my head. Generally I tend to keep the clutchless upkicks to higher in the rev range, execute them nice and swift and away we go.

Think of the throttle as the 'make it happen' trigger, as soon as you get that off the pressure being applied on your gear shifter should be enough to snick it home nicely, then it's back on the throttle. Bit of practice and it becomes instantaeous and second nature.

pressure with foot
throttle closed
gear up
throttle back on

[Aubrey]

I run my gearbox as a race setup with the pattern reversed. I click up to go into first and then click down all the way into sixth. Coming down the box I click up all the way to first.

Takes a bit of getting used to but I find it much better.

Edited by Aubrey on Friday 1st August 22:54

[Stu R]

Aubrey said:

I run my gearbox as a race setup with the pattern reversed. I click up to go into first and then click down all the way into sixth. Coming down the box I click up all the way to first.

Takes a bit of getting used to but I find it much better.

Edited by Aubrey on Friday 1st August 22:54

always wanted to try that sort of setup for some reason

[King Herald]

Stu R said:

Rach81 said:

I find it really clunky and jerky, am I doing something wrong?

....come off the throttle completely and it's home, back on the throttle to maintain whatever rate of acceleration it is you want to achieve....

No, no, you just ease of the throttle a fraction, for a split second, don't even really lose drive, just take the strain off the cogs to let them slip home. It'll change seamlessly and with hardly a change of acceleration, unless you are really dogging it, then you might find your front end looking skyward a touch.

Release your foot from the gear lever, then press on it again ready for the next shift. It is as fast as an air-shifter when you get it just right.

[Stu R]

King Herald said:

Stu R said:

Rach81 said:

I find it really clunky and jerky, am I doing something wrong?

....come off the throttle completely and it's home, back on the throttle to maintain whatever rate of acceleration it is you want to achieve....

No, no, you just ease of the throttle a fraction, for a split second, don't even really lose drive, just take the strain off the cogs to let them slip home. It'll change seamlessly and with hardly a change of acceleration, unless you are really dogging it, then you might find your front end looking skyward a touch.

Release your foot from the gear lever, then press on it again ready for the next shift. It is as fast as an air-shifter when you get it just right.

See i've been told the same, but I find it quicker to just close it, also means when my wrist comes back to put the throttle on I consistently grab the right amount of throttle, just for consistency alone it works better for me, takes no time at all as you sort of spring it back of the throttle stop.
maybe I'm just wierd but that's how I do it

[Rach81]

I'll go out for a practice on Sunday

[colonel c]

It’s one of these things that will come as you feel more at one with the bike. Don’t worry about such things now. Get some miles under your belt and things like clutchless changing will come naturally.

[Aubrey]

Stu R said:

Aubrey said:

I run my gearbox as a race setup with the pattern reversed. I click up to go into first and then click down all the way into sixth. Coming down the box I click up all the way to first.

Takes a bit of getting used to but I find it much better.

always wanted to try that sort of setup for some reason

You should have a go! As I said, can take a bit of getting used to. It's easy to do on some bikes, just swap the gear lever linkage 180 degrees, certainly easy on a suzuki. Not sure about other bikes though.