Clutchless shifting
#1
Clutchless shifting
So this is my second post in this forum. I bought an 05 CBR600rr over a month ago and have been lurking around this site since Feb.
Anyways, I read a thread about drag racing and how some people keep pressure on the the shifter and when the fuel cuts out at redline, the transmission shifts to the next gear. I was thinking about this while riding around, and decided to try a clutchless shift while unloading the engine (I have messed around with this in cars). It shifted easily, which surprised me. I am a car guy and know the workings of the transmission so I know that by not using the clutch, I am putting extra wear on the synchros. Obviously, during normal driving, there is no advantage to not using the clutch, but does anyone know how badly shifting without the clutch wears the transmission?
Anyways, I read a thread about drag racing and how some people keep pressure on the the shifter and when the fuel cuts out at redline, the transmission shifts to the next gear. I was thinking about this while riding around, and decided to try a clutchless shift while unloading the engine (I have messed around with this in cars). It shifted easily, which surprised me. I am a car guy and know the workings of the transmission so I know that by not using the clutch, I am putting extra wear on the synchros. Obviously, during normal driving, there is no advantage to not using the clutch, but does anyone know how badly shifting without the clutch wears the transmission?
#2
#3
RE: Clutchless shifting
Up shifting cluthless is fine just remember to preload the shifter and let off the throttle just before shifting.
I haven't heard of downshifting (clutchless) casing any kind of problem on the synchros for one reason. I don't think there are synchros in a bikes transmition. Also You can downshift without using the clutch as long as you watch your revs. IMHO i don't like to downshift because it is a jerky feeling.
As far as wear on the transmition, bikes are close ratioed so upshifting clutchless shouldn't be a problem.Also on a car if done properly you can shift without using the clutch but sense it's not a close ratio gearbox, it's a little tricking getting it from gear to gear.
I haven't heard of downshifting (clutchless) casing any kind of problem on the synchros for one reason. I don't think there are synchros in a bikes transmition. Also You can downshift without using the clutch as long as you watch your revs. IMHO i don't like to downshift because it is a jerky feeling.
As far as wear on the transmition, bikes are close ratioed so upshifting clutchless shouldn't be a problem.Also on a car if done properly you can shift without using the clutch but sense it's not a close ratio gearbox, it's a little tricking getting it from gear to gear.
#4
RE: Clutchless shifting
I posted on this last year and what I got out of it seemed to be 'you can do it, but it isn't good for the tranny'. Something about dogs/gears/widgets. I think it is a skill you need if you have a clutch failure, but unless you are on the track where evry little tenth matters I wouldn't do it too often. I always use a little clutch whether it needs it of not.
#5
RE: Clutchless shifting
ORIGINAL: fishfryer527
I posted on this last year and what I got out of it seemed to be 'you can do it, but it isn't good for the tranny'. Something about dogs/gears/widgets. I think it is a skill you need if you have a clutch failure, but unless you are on the track where evry little tenth matters I wouldn't do it too often. I always use a little clutch whether it needs it of not.
I posted on this last year and what I got out of it seemed to be 'you can do it, but it isn't good for the tranny'. Something about dogs/gears/widgets. I think it is a skill you need if you have a clutch failure, but unless you are on the track where evry little tenth matters I wouldn't do it too often. I always use a little clutch whether it needs it of not.
#7
RE: Clutchless shifting
i clutchless shift all the time. esp. when the shop messes w/ where my clutch is.
I have on the other hand, never shifted redline style like you talked about, but come to think of it i would assume it would work the same. Sounds freaking crazy. i MIGHT try it, but i'm too n00b to push it that hard. i'll wait for the track.
I have on the other hand, never shifted redline style like you talked about, but come to think of it i would assume it would work the same. Sounds freaking crazy. i MIGHT try it, but i'm too n00b to push it that hard. i'll wait for the track.
#8
#9
RE: Clutchless shifting
ORIGINAL: cstratton04
and decided to try a clutchless shift while unloading the engine (I have messed around with this in cars).
and decided to try a clutchless shift while unloading the engine (I have messed around with this in cars).
PPK
#10