Braking = Gear Downshifting?
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Braking = Gear Downshifting? - 7/6/2006 2:49:16 AM
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MaverickPrince
Posts: 4
Joined: 5/1/2006
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Hi all... been riding an '01 stock F4i for a few months now... and on the rare occasions where I've had to stop rather abruptly to a complete stop... (appying brakes 75% front and 25% rear) it "appears" that my bike gears down on itself? e.g. I'm in 2nd gear and try to stop, then I can hear a distinct "ka-chunk"...
Does this make sense (or some kind of feature or reaction)?
Mind you, it all happens rather fast and I'm just worried about getting to a stop in that exact instant, so just thought I'd post here to see if there's any substance here...
Comments?
Thanks...
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RE: Braking = Gear Downshifting? - 7/6/2006 3:16:38 AM
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_PJ
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Joined: 5/18/2006
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i've heard something like that once.. i would think it's more likely a chain noise it makes when you try to shift quickly from accelerating to braking
in my case, it was probably because my chain had to much free play and needed to be tighten up
< Message edited by _PJ -- 7/6/2006 3:17:03 AM >
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RE: Braking = Gear Downshifting? - 7/6/2006 9:44:35 AM
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Jaybird180
Posts: 2718
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If you've taken MSF it may be the reaction drilled into you subconscious. Or panic reaction pressing down with both feet :-)
_____________________________
Track/Street 02'' F4i
ZG Dbl Bbbl, Galfer SS Lines, PC3r, Muzzy s/o, NRC cover, ShiftMinder(WTF?), Speedbleeders, Vortex sliders, fenderless, GP Shift
Ohlins, Racetech, Showa Suspension
Don''t go in the forest if you don''t want to go to Granny'
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RE: Braking = Gear Downshifting? - 7/6/2006 10:05:51 AM
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mikem317
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No noise here.
_____________________________
Regards,
Mike
quote:
"Baseball is ninety percent mental. The other half is physical." -- Yogi 'Bird-Brained' Berra
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RE: Braking = Gear Downshifting? - 7/6/2006 10:15:56 AM
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ejohn
Posts: 369
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if you press hard enought to break loose the rear tire you will hear the slack in the chain making noise. try this as your riding to see if this is what your hearing.
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RE: Braking = Gear Downshifting? - 7/6/2006 10:39:02 AM
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Jaybird180
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quote:
ORIGINAL: ejohn
if you press hard enought to break loose the rear tire you will hear the slack in the chain making noise. try this as your riding to see if this is what your hearing.
I wouldn't do that if I were you. If the tire breaks traction you run the risk of a highside. Or if it grips at the wrong moment you at least cause extra wear/tear to chain and sprokets. I've heard some say that rough downshifting can even cause the engine to rotate backward for a split second, but that sounds fishy to me.
_____________________________
Track/Street 02'' F4i
ZG Dbl Bbbl, Galfer SS Lines, PC3r, Muzzy s/o, NRC cover, ShiftMinder(WTF?), Speedbleeders, Vortex sliders, fenderless, GP Shift
Ohlins, Racetech, Showa Suspension
Don''t go in the forest if you don''t want to go to Granny'
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RE: Braking = Gear Downshifting? - 7/6/2006 10:40:23 AM
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mikem317
Posts: 382
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Oh I understand.
When the tire is breaking traction? As if is too cold, right? I've done that before. A slipper clutch would prob. solve that problem.
_____________________________
Regards,
Mike
quote:
"Baseball is ninety percent mental. The other half is physical." -- Yogi 'Bird-Brained' Berra
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RE: Braking = Gear Downshifting? - 7/6/2006 1:22:11 PM
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SkinnyJ
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i dont even know if i understand the question lol. are you pulling in the clutch when your stoping abrutbly?
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RE: Braking = Gear Downshifting? - 7/6/2006 2:43:27 PM
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mikem317
Posts: 382
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quote:
ORIGINAL: SkinnyJ
i dont even know if i understand the question lol. are you pulling in the clutch when your stoping abrutbly?
When the tires are not to operating temp and you quickly downshift into a lower gear and release the clutch or locking the rear tire. The whole rear subframe hops and makes a clunking sound.
_____________________________
Regards,
Mike
quote:
"Baseball is ninety percent mental. The other half is physical." -- Yogi 'Bird-Brained' Berra
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RE: Braking = Gear Downshifting? - 7/6/2006 3:38:35 PM
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Jaybird180
Posts: 2718
Joined: 5/12/2006
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quote:
ORIGINAL: mikem317
A slipper clutch would prob. solve that problem.
Too bad no one makes one for the F4i
_____________________________
Track/Street 02'' F4i
ZG Dbl Bbbl, Galfer SS Lines, PC3r, Muzzy s/o, NRC cover, ShiftMinder(WTF?), Speedbleeders, Vortex sliders, fenderless, GP Shift
Ohlins, Racetech, Showa Suspension
Don''t go in the forest if you don''t want to go to Granny'
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RE: Braking = Gear Downshifting? - 7/6/2006 4:50:34 PM
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SkinnyJ
Posts: 199
Joined: 6/20/2006
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quote:
ORIGINAL: mikem317
quote:
ORIGINAL: SkinnyJ
i dont even know if i understand the question lol. are you pulling in the clutch when your stoping abrutbly?
When the tires are not to operating temp and you quickly downshift into a lower gear and release the clutch or locking the rear tire. The whole rear subframe hops and makes a clunking sound.
o thanks for clearing that up. mine does not make this sound and i downshift all the time, if i downshift and let it out to quickly somtimes my end might get a lil squirly but thats about it
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RE: Braking = Gear Downshifting? - 7/6/2006 5:14:43 PM
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Jaybird180
Posts: 2718
Joined: 5/12/2006
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quote:
ORIGINAL: SkinnyJ
quote:
ORIGINAL: mikem317
quote:
ORIGINAL: SkinnyJ
i dont even know if i understand the question lol. are you pulling in the clutch when your stoping abrutbly?
When the tires are not to operating temp and you quickly downshift into a lower gear and release the clutch or locking the rear tire. The whole rear subframe hops and makes a clunking sound.
o thanks for clearing that up. mine does not make this sound and i downshift all the time, if i downshift and let it out to quickly somtimes my end might get a lil squirly but thats about it
Practice this technique:
_____________________________
Track/Street 02'' F4i
ZG Dbl Bbbl, Galfer SS Lines, PC3r, Muzzy s/o, NRC cover, ShiftMinder(WTF?), Speedbleeders, Vortex sliders, fenderless, GP Shift
Ohlins, Racetech, Showa Suspension
Don''t go in the forest if you don''t want to go to Granny'
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