Romans
Expert Class
Posts: 294
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posted July 02, 2012 05:56 PM
12 R Ratcheting On hard launch
Any one Else have this happening under hard launch. Chain does not need a major tightening. Bike has 450 kilo on the clock and is skipping ??? Repeat tests all same. I will tighten chain but it does not need it. Any and all input welcome Cheers,
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2012 ZX-14 R Turbo, 2010 ZX-14 Turbo, 2007 ZX-14, 2009 ZX-6R, YZ 450F
  
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kawasakijockey
Pro
Posts: 1876
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posted July 02, 2012 06:21 PM
 Edited By: kawasakijockey on 3 Jul 2012 03:19
edit: wrong bike.
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Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
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smokinstorm
Zone Head
Old Drag Racer
Posts: 504
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posted July 02, 2012 06:31 PM
Edited By: smokinstorm on 3 Jul 2012 02:32
Try tightening the chain a little and see if the problem at least gets better. We have to tighten the N/A 14 chain tighter than I thought was reasonable to get it to stop skipping. it's tight enough that it causes a little bit of drag. We're ~70 inch wheelbase now but have gone out to 71.5". You cannot move the chain up and down more than an inch right in the middle when it's tight enough that it won't skip any more. Hope it's something this simple for you.
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2009 Monster Edition ZX14
It's all stock I swear. Well...almost.
2005 Turbo Busa
2001 GSXR 1000
Looking for a 1985 GS1150E
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zx12mark
Pro
Posts: 1654
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posted July 02, 2012 06:37 PM
you get a drive chain too tight and you`ll burn up bearings fast. and maybe the engine.
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smokinZX14
Needs a life
Posts: 10197
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posted July 02, 2012 06:39 PM
Edited By: smokinZX14 on 3 Jul 2012 02:39
What mods do you have if any ? Is this at the drag strip or street ?
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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1badzx12r
Needs a life
Posts: 8321
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posted July 02, 2012 07:02 PM
quote:
You cannot move the chain up and down more than an inch right in the middle when it's tight enough that it won't skip any more.
i taught i was the only one that had to do that.. chain slap was an issue also on really hard launches .. even with the chain butt tight when a photo was taken at launch i always had slack..
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http://www.youtube.com/watch?v=S06nIz4scvI
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smokinstorm
Zone Head
Old Drag Racer
Posts: 504
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posted July 02, 2012 09:07 PM
Edited By: smokinstorm on 3 Jul 2012 05:09
quote:
quote:
You cannot move the chain up and down more than an inch right in the middle when it's tight enough that it won't skip any more.
i taught i was the only one that had to do that.. chain slap was an issue also on really hard launches .. even with the chain butt tight when a photo was taken at launch i always had slack..
I couldn't belive it was the chain skipping until, just like you, I saw a side pic on the launch. The slack on the bottom was crazy. Now, the bike is heavy. making decent power and hitting mid 1.3 60's with the 240 pound rider and low 1.3's with a best of 1.29 with the 160 pound rider. That's putting a lot of stress on the chain. Everyone needs to see a pic of their bike on the launch to believe how much slack gets in the chain at that moment. It was definitely eye opening for me.
____________
2009 Monster Edition ZX14
It's all stock I swear. Well...almost.
2005 Turbo Busa
2001 GSXR 1000
Looking for a 1985 GS1150E
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Romans
Expert Class
Posts: 294
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posted July 03, 2012 01:39 AM
Sorry guys The above should have read 2012 14R. Brain cramp. Chain has been tightened but have not had a chance to test. Fingers crossed. Cheers.
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2012 ZX-14 R Turbo, 2010 ZX-14 Turbo, 2007 ZX-14, 2009 ZX-6R, YZ 450F
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted July 03, 2012 05:38 AM
You have the slipper clutch still in ?
wee
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Romans
Expert Class
Posts: 294
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posted July 03, 2012 06:01 AM
quote:
You have the slipper clutch still in ?
wee
Yes I do. Do you think it may be tied in with this prob some how ?
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2012 ZX-14 R Turbo, 2010 ZX-14 Turbo, 2007 ZX-14, 2009 ZX-6R, YZ 450F
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted July 03, 2012 06:52 AM
Brock said it can chatter with the slipper, mine never did. Are your judder springs still in?
wee
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Romans
Expert Class
Posts: 294
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posted July 03, 2012 07:11 AM
Yes, bike is all stock. Zero mods. 240lb Rider
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2012 ZX-14 R Turbo, 2010 ZX-14 Turbo, 2007 ZX-14, 2009 ZX-6R, YZ 450F
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted July 03, 2012 08:52 AM
remove the slipper and install Brocks spacer with 180 shims, that should take care of it.
wee
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted July 03, 2012 09:25 AM
Tighten the chain and dog it, then let us know if the chatter still exist
wee
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Romans
Expert Class
Posts: 294
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posted July 03, 2012 10:32 AM
Will do, Thanks Again.
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2012 ZX-14 R Turbo, 2010 ZX-14 Turbo, 2007 ZX-14, 2009 ZX-6R, YZ 450F
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted July 03, 2012 11:31 AM
ok, now I'm off my phone and read this thread lol, hard launch means dead stop and leaving hard right? What rpm is the chatter? Brock asked me before I got his clutch mod if I had chatter leaving at the rpm I leave at "7500", I told him no, my weight is 214 pounds are you heavier? I think if your chain was skipping teeth it would break some off or damage the sprockets really bad.
Waiting for the return report....
wee
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WARBIRD
Needs a job
Posts: 2739
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posted July 03, 2012 12:29 PM
Quote:
"I think if your chain was skipping teeth it would break some off or damage the sprockets really bad."
That's a big 10-4........... 
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I'd Rather Be Roadracing.
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