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Shifting without the clutch?

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  #21  
Old 12-15-2017, 06:30 PM
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If you tear down the tranny, you will find that all the gears are in constant mesh.
therefore you cannot "chip a gear"
the only thing that moves are the engagement "dogs"
the dogs are a little undercut , so letting a little slack in the applied power is necessary to move the dog from one gear to another .
clutchless shifting is fine if you understand the mechanics .
but I see some folks wearing out/off the shifting dogs , and burning the shifting forks.
"If it don't go ,"force it"
 
  #22  
Old 12-16-2017, 12:13 PM
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Originally Posted by heybaylor
If you tear down the tranny, you will find that all the gears are in constant mesh.
therefore you cannot "chip a gear"
the only thing that moves are the engagement "dogs"
the dogs are a little undercut , so letting a little slack in the applied power is necessary to move the dog from one gear to another .
clutchless shifting is fine if you understand the mechanics .
but I see some folks wearing out/off the shifting dogs , and burning the shifting forks.
"If it don't go ,"force it"

And it's not that hard to break off the dogs, even without clutch-less shifting.
 
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  #23  
Old 12-16-2017, 02:36 PM
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According to the Motorcycle Shifting Handbook, by Stephon Frasier: "With good technique, clutchless up and downshifting can be done at any road or engine speed and neither will damage your gearbox"

I think the key to smooth shifts is preloading. That and timing the throttle release w/the shift action. I find preloading to be tricky and often I do a clutchless shift unintentionally -- mostly between first and second.
 
  #24  
Old 12-17-2017, 10:16 AM
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Originally Posted by Charles Martin

I've recently had my 2018 Street Bob delivered. Was clutching, and discovered the clutchless shift lol. Mine, it's a lot like a big truck. Apply gentle pressure to the shifter while letting out of the throttle and there she goes.
Looks a bit black! Otherwise one of the nicer models of the new line-up. You've plainly cracked clutchless shifting - well done! I had one bike, many years ago, with a very close-ratio 6-speed, which I could chenge both up and down without the clutch - especially on dirt. Most of my bikes however are best only changed that way in the upper closer ratios. Fourth into top on my Buell at speed is especially rewarding!
 
  #25  
Old 12-19-2017, 06:28 PM
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What I have discovered is this, the clutchless shift is noticeably more.. violent than the clutched.
 
  #26  
Old 12-20-2017, 03:52 AM
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Originally Posted by Charles Martin
What I have discovered is this, the clutchless shift is noticeably more.. violent than the clutched.
Takes a lot of skill and effort to get them 'just so'! I normally reserve mine to the upper couple of ratios, especially into fifth, which can be most rewarding, when gunning the bike. On my Buell I can't afford to leave that too high into the rev range, as the tooth loading can get high enough to make a real mess of a change.

On our five speed trannies the ratios are quite wide between first and second, very close between fourth and top. A clutchless change, on a conventional tranny like ours, is much more user friendly when the ratios are close.
 

Last edited by grbrown; 12-20-2017 at 03:58 AM.
  #27  
Old 12-20-2017, 10:57 AM
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I might try that on 4th 5th and 6th. But definitely not the lowers. That street bob has some nasty power for such a light bike.
 
  #28  
Old 12-20-2017, 11:21 AM
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Seems like way more effort to get clutchless shifting right.
 
  #29  
Old 12-20-2017, 02:12 PM
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I don't do it on the street. If drag racing then yes.
 
  #30  
Old 12-20-2017, 02:30 PM
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Did not seem to hear my Yamaha back in my crazy days but I did come off the throttle.
Keep it up long and you should get at least 50 good runs..Alternator rotor spline will usually go first around the 20th run.. CHarley loves this....
 

Last edited by Jackie Paper; 09-14-2018 at 07:46 AM.


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