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Old 04-10-2007, 01:28 PM   #1
Scorpio
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Clutchless Upshifting

Just finished reading the article in the april Sportrider regarding upshifting without use of the clutch. Basically it says that you can upshift without using the clutch if you slightly preload(2-4lbs pressure) the shift lever with your foot, then slightly back off the throttle and grab a gear and get back on the throttle without doing any damage to the transmission if done correctly. I was just wondering if any of you guys use this technique and can comment on whether or not it's effective and safe on the bike.

thanks!

-Tom
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Old 04-10-2007, 01:34 PM   #2
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Power Shifting? It's cool, but I've always been told only at your higher speeds.
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Old 04-10-2007, 01:34 PM   #3
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I do it sometimes. Only in 3rd-6th gears though.
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Old 04-10-2007, 01:34 PM   #4
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if I'm lazy I'll upshift with no clutch, but never downshifting....and I don't do it very often...
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Old 04-10-2007, 01:35 PM   #5
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Quote:
Originally Posted by vfracer-r
I used to race like that, but the best most transmission-safe way to do it is to get a PCII or PCIII and a quickshifter.

While it can be done, and it may not screw up your tranny right away, it's not good for it.

The quickshifter cuts ignition and defuels the bike (fuel injected bikes obviously) to make it possible to shift without the clutch and not tear it up... theorhetically. I used my friend's quickshifter on his GSXR race bike, and it's the shiznit.
Better said
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Old 04-10-2007, 01:35 PM   #6
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That is what I do and have been doing for a while. Quickshifter would be nice though.
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Old 04-10-2007, 01:38 PM   #7
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I do it when I am lazy and riding with my left hand on my hip.
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Old 04-10-2007, 01:38 PM   #8
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Quote:
Originally Posted by Moody
That is what I do and have been doing for a while. Quickshifter would be nice though.
+1
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Old 04-10-2007, 01:39 PM   #9
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I only power shift when I'm attempting to race, lol. And that is at my shift point where it won't destroy my bike!
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Old 04-10-2007, 01:39 PM   #10
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I've done it a few times on the bike, mostly by accident.....
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Old 04-10-2007, 01:40 PM   #11
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For every gear at any RPM. Do it to down shift as well if my RPMs are down... otherwise I use the clutch.
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Old 04-10-2007, 01:40 PM   #12
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How in the world did you turn 51's at Denton with out doing this?
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Old 04-10-2007, 01:42 PM   #13
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Motorcycle and race car trans are meshed to accept this type of shifting. Regular vehicles are spherical which makes them quiter less race friendly. Clutchless down shifting is alot harder, smoothly anyway.
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Old 04-10-2007, 01:42 PM   #14
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i do it a lot on the dirt bike...up and down...but i don't have any engine break
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Old 04-10-2007, 01:42 PM   #15
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Quote:
Originally Posted by Rick H.I.C.
Motorcycle and race car trans are meshed to accept this type of shifting. Regular vehicles are spherical which makes them quiter less race friendly. Clutchless down shifting is alot harder, smoothly anyway.
Slipper clutch seems to help.
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Old 04-10-2007, 01:45 PM   #16
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Quote:
Originally Posted by vfracer-r
I can tell you from personal experience, it ain't good for your tranny, no matter how long you've been doing it and with what technique.

Keep on doing it though, these local shops like Motorcycles Unlimited will always be there to rebuild your tranny for you
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Old 04-10-2007, 01:47 PM   #17
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Although I have heard from both sides of this. There are plenty of people who baby their bike and the tranny craps at at lets say 18,000 miles anyways. Now they bang on it like a pinata and it is doing just fine.
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Old 04-10-2007, 01:49 PM   #18
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Quote:
Originally Posted by Moody
Slipper clutch seems to help.
Haven't tried one yet. I understand that you'll go through more clutches. :dontknow:
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Old 04-10-2007, 01:51 PM   #19
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Quote:
Originally Posted by Rick H.I.C.
Haven't tried one yet. I understand that you'll go through more clutches. :dontknow:
No idea... if it gets me around the track quicker great but I can't imagine it being more wear then smoking them like I used to. :dontknow:
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Old 04-10-2007, 01:52 PM   #20
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Quote:
Originally Posted by vfracer-r
I can tell you from personal experience, it ain't good for your tranny, no matter how long you've been doing it and with what technique.

Keep on doing it though, these local shops like Motorcycles Unlimited will always be there to rebuild your tranny for you
See, thats what I wanted to hear,
that contradicts what these guys are saying in Sport rider that they've been doing it for years without any issues. They also state that Kevin Shwantz teaches this technique in his riding school and has'nt had any issues in over 26 years of racing. I think I'll just spend the money on a quick shifter to be safe though.
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