Quick shifter use
Discussion
Had my Tuono in for a service.
Whilst chatting with the guys, they mentioned that using the quick shift on up shifts was harder on the gearbox than downshifts. A Recent warranty claim was only just passed for damage to gearbox because using the upshift at too low revs had caused issues.
Just wondering what the general thoughts on this was.
It seems harder on the gearbox with downshifts, but the mechanics suggested it’s the other way round because rev matching on downshifts protects the components.
Whilst chatting with the guys, they mentioned that using the quick shift on up shifts was harder on the gearbox than downshifts. A Recent warranty claim was only just passed for damage to gearbox because using the upshift at too low revs had caused issues.
Just wondering what the general thoughts on this was.
It seems harder on the gearbox with downshifts, but the mechanics suggested it’s the other way round because rev matching on downshifts protects the components.
Lots of bikes you can upshift with no q/s or clutch and done correctly doesn’t hurt the box.
Ari Henning did a good review on it either Mc garage or revzilla on the tube I can’t remember which.
https://www.youtube.com/watch?v=viWuolNYGyI&pp...
https://www.youtube.com/watch?v=mlBhPZdVqb8&pp...
Ari Henning did a good review on it either Mc garage or revzilla on the tube I can’t remember which.
https://www.youtube.com/watch?v=viWuolNYGyI&pp...
https://www.youtube.com/watch?v=mlBhPZdVqb8&pp...
Edited by trickywoo on Saturday 22 July 08:32
milu said:
Had my Tuono in for a service.
Whilst chatting with the guys, they mentioned that using the quick shift on up shifts was harder on the gearbox than downshifts. A Recent warranty claim was only just passed for damage to gearbox because using the upshift at too low revs had caused issues.
Just wondering what the general thoughts on this was.
It seems harder on the gearbox with downshifts, but the mechanics suggested it’s the other way round because rev matching on downshifts protects the components.
Hmm, that sounds like a garage "only just" not pulling a fast one.Whilst chatting with the guys, they mentioned that using the quick shift on up shifts was harder on the gearbox than downshifts. A Recent warranty claim was only just passed for damage to gearbox because using the upshift at too low revs had caused issues.
Just wondering what the general thoughts on this was.
It seems harder on the gearbox with downshifts, but the mechanics suggested it’s the other way round because rev matching on downshifts protects the components.
I expect to be able to use a quick shift when I want to unless either the software blocks it, or the manual warns me very clearly it may cause damage.
on my bike the up shift works best either at low rpm or nailing it. To be fair my bike is getting old and the technology has improved.
According to the reviews, Aprilia have apparently been quite open and vocal about use of the QS at low rpm, saying that it shouldn’t be used below a certain rpm (4k-ish IIRC) to protect the ‘box.
It’s sounds a bit CYA to me so they can Houdini out of warranty claims, but I guess depends on the components you’ve got in there, how much delay is programmed into the shift dependent on revs and gear etc.
In my experience, different gearboxes from different manufacturers behave… differently. The one in my Fireblade will happily shift up or down, even 1st to 2nd, at any rpm and still be smooth 95% of the time. The QS on my Speed Triple however I’ll never use 1st to 2nd, is generally smooth but will be notchy or clunky at times going through the gears, depending on rpm, how much pressure you put on the gear lever, which gear you’re shifting through etc. Other bikes are setup differently - new Speed Triple 1200 for instance seems to have a longer delay between up shifts which makes it smoother at lower rpms, but less so further up the rev range.
It’s sounds a bit CYA to me so they can Houdini out of warranty claims, but I guess depends on the components you’ve got in there, how much delay is programmed into the shift dependent on revs and gear etc.
In my experience, different gearboxes from different manufacturers behave… differently. The one in my Fireblade will happily shift up or down, even 1st to 2nd, at any rpm and still be smooth 95% of the time. The QS on my Speed Triple however I’ll never use 1st to 2nd, is generally smooth but will be notchy or clunky at times going through the gears, depending on rpm, how much pressure you put on the gear lever, which gear you’re shifting through etc. Other bikes are setup differently - new Speed Triple 1200 for instance seems to have a longer delay between up shifts which makes it smoother at lower rpms, but less so further up the rev range.
I normally change up without a clutch anyway on older bikes.
With my Q/S ones, it’s only on WOT (wide open throttle) and usually around 6k plus revs… feels a bit clunky under that.
On downshifts, it feels it needs to be very specific and I need to be fully off the throttle, which I didn’t realise I don’t really do.. so I still tend to do that manually.
I don’t use it at all up/down between 1 and 2.
With my Q/S ones, it’s only on WOT (wide open throttle) and usually around 6k plus revs… feels a bit clunky under that.
On downshifts, it feels it needs to be very specific and I need to be fully off the throttle, which I didn’t realise I don’t really do.. so I still tend to do that manually.
I don’t use it at all up/down between 1 and 2.
milu said:
Had my Tuono in for a service.
Whilst chatting with the guys, they mentioned that using the quick shift on up shifts was harder on the gearbox than downshifts. A Recent warranty claim was only just passed for damage to gearbox because using the upshift at too low revs had caused issues.
Just wondering what the general thoughts on this was.
It seems harder on the gearbox with downshifts, but the mechanics suggested it’s the other way round because rev matching on downshifts protects the components.
I use the QS on my Tuono 95% of the time and only ever really use the clutch between 1st and 2nd when trundling along at slow speed and revs in 20 and 30mph zones.Whilst chatting with the guys, they mentioned that using the quick shift on up shifts was harder on the gearbox than downshifts. A Recent warranty claim was only just passed for damage to gearbox because using the upshift at too low revs had caused issues.
Just wondering what the general thoughts on this was.
It seems harder on the gearbox with downshifts, but the mechanics suggested it’s the other way round because rev matching on downshifts protects the components.
The Tuono’s also have a small orange light in the bottom RH corner of the dash when the QS shouldn’t be used.
KurtFlew said:
My bike has an aftermarket QS (dynojet) fitted by the previous owner, it doesn't work under 6k and I don't use it on 1 to 2 or 2 to 3 because it feels like it'll grenade the box.
Is it an ignition or fuel based one? If it’s fuel the best thing you can do is throw it in the bin.trickywoo said:
Is it an ignition or fuel based one? If it’s fuel the best thing you can do is throw it in the bin.
I googled it and it can cut both so depends how it's been programmed, it's linked to the power commander so I'd need to connect to that. I'm not that bothered, I just don't use it instead. It's a Kawasaki which are famous for chocolate gearboxes so that puts me off too! I don't have one on my track bike (zx6r) for the same reason, even though clutching does get tiresome sometimes.
rigga said:
KTM manual for Duke 890R states a rev range for each gear in which the QS should be operated.
Never use it between 1-2, as long as it's revving hard and a positive shift it seems fine, being lazy, especially between 5-6 results in miss shifts and horrible sounds.
I had a KTM 690 SMC R with quick shifter. Absolutely horrible & useless in the first 3 gears. Changing down never sounded right in any gear - I could almost feel the swarf peeling off the gear cogs before it was sucked into the rest of the sump/clutch/cylinders etc.....Never use it between 1-2, as long as it's revving hard and a positive shift it seems fine, being lazy, especially between 5-6 results in miss shifts and horrible sounds.
Thoroughly addictive on fast A roads mind.
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