Clutchless upshifts?
#1
Clutchless upshifts?
Do you guys upshift with or without the clutch? Or only over a certain RPM?
I tried doing this today, seems very smooth if I time it right and bump the shifter when I back of the throttle, even as low as 4,000 rpms.
The method I reading by Lee Parks is to keep pressure on the shifter prior to backing off the throttle, but that seems to shift it a little too early and harshly before the engine has a chance to slow down into the next gear.
What about wear and tear on the bike? If it drops right in with the same effort as using the clutch, I don't see how it could harm anything.
I tried doing this today, seems very smooth if I time it right and bump the shifter when I back of the throttle, even as low as 4,000 rpms.
The method I reading by Lee Parks is to keep pressure on the shifter prior to backing off the throttle, but that seems to shift it a little too early and harshly before the engine has a chance to slow down into the next gear.
What about wear and tear on the bike? If it drops right in with the same effort as using the clutch, I don't see how it could harm anything.
#4
In a car transmission you would be wearing the snycromesh gears shifting without the clutch. Motorcycle trans don't use syncros, but still some wear must occur. I don't see the advantage if you are not on the track.
#5
I like shifting with out the clutch, and like what has been said it is really smooth if timed properly. I read in a moto mag that it does not hurt anything if done properly. Some of my friends swear that it will wear the lower gears out though. I usually use the clutch for the lower gears.
#7
The bike gears aren't synchronized?
I'll have to experiement with the clutchless downshifts, I hadn't tried that.
I figure whether or not I'm using the clutch I need to learn to match revs properly during shifts to keep it smooth.
I'll have to experiement with the clutchless downshifts, I hadn't tried that.
I figure whether or not I'm using the clutch I need to learn to match revs properly during shifts to keep it smooth.
#8
I normally use the clutch on the street, unless I'm doing a WOT run.
On the track the clutch is a stop and go device. Well, not really. I use it for downshifting and preventing wheel hop when decelerating.
For clutchless upshifts it's kind of like a reverse throttle blip from wide-open. You only drop it a bit. I time it with the shift, rather than preloading the shift lever. You want to be sure the gears are unloaded before the shift happens.
I think it's beter for the transmission than excessively lazy shifts, where you can hear the dogs clunk.
If you watch the on-bike cameras on race bikes, you can see them use the clutch for downshifting, then let it out easily on corner entry.
On the track the clutch is a stop and go device. Well, not really. I use it for downshifting and preventing wheel hop when decelerating.
For clutchless upshifts it's kind of like a reverse throttle blip from wide-open. You only drop it a bit. I time it with the shift, rather than preloading the shift lever. You want to be sure the gears are unloaded before the shift happens.
I think it's beter for the transmission than excessively lazy shifts, where you can hear the dogs clunk.
If you watch the on-bike cameras on race bikes, you can see them use the clutch for downshifting, then let it out easily on corner entry.
#9
I've never had an MC trans apart, but I know they don't have syncros. They use "dogs" to engage gears.
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