bigtallguy
Novice Class
Posts: 86
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posted September 01, 2009 09:19 AM
Chain noise/vibes
Just installed a new chain and rear sprocket. Didn't change the front sprocket because I couldn't get that nut off.
On the first ride with the new chain I noticed a buzz/vibe from the chain that I can feel in the left foot peg. It's only there when accelerating at lower speeds (1st gear). Almost feels like the chain rubbing on a chain guide or something like that.
I checked the tension when I got back and it's good, everything looks to be aligned correctly and the chain doesn't bind or anything when rolling the wheel on a stand. Thought maybe the old countershaft sprocket and the new chain maybe don't like each other but otherwise I have no idea. What do you guys think?
  
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BobC
Pro
Posts: 1736
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posted September 01, 2009 09:31 AM
 Edited By: BobC on 1 Sep 2009 17:33
It could be that the counter shaft sprocket is worn as you say, or possibly it's worth checking the wheel alignment. Also put some more lube on the chain to see if it helps.
I just thought to mention that the adjustment you set often tightens up when you torque the axle nut up. Make sure it's still got the required tension and hasn't gone taut.
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Candy Thunder Blue 2006 ZZR1400
Stock wheelbase
Max: 205.4 mph in 1.25 miles
2012 ZZR1400 in Golden Blazed Green
Brock CT Full System. etc
Max: 203.1 in 1 mile (so far)
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JR
Expert Class
drag racing
Posts: 178
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posted September 01, 2009 10:09 AM
quote:
Just installed a new chain and rear sprocket. Didn't change the front sprocket because I couldn't get that nut off.
On the first ride with the new chain I noticed a buzz/vibe from the chain that I can feel in the left foot peg. It's only there when accelerating at lower speeds (1st gear). Almost feels like the chain rubbing on a chain guide or something like that.
I checked the tension when I got back and it's good, everything looks to be aligned correctly and the chain doesn't bind or anything when rolling the wheel on a stand. Thought maybe the old countershaft sprocket and the new chain maybe don't like each other but otherwise I have no idea. What do you guys think?
yeah when i changed my front sprocket that nut was on tight. i put a adjustable wrench on it and losened it up by moving the wheel. move the wheel till it hits the kick stand then just put some pressure and it will losen . i would have some one around to help hold the bike just to be safe.
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08 zx 14 lowered, straped in the
front, strecth 65, air shifter, pigs
windshiel, carbon fiber frame
sliders, full 2brother exhaust.
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bigtallguy
Novice Class
Posts: 86
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posted September 01, 2009 01:36 PM
I'll change that front sprocket soon and see it that helps any. Just got an electric impact wrench for the job so hopefully that works better than the 2' breaker bar I was using...
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted September 01, 2009 06:01 PM
I had a 5ft metal pole I put over the end of the ratchet, erin sitting on the bike and a 2x4 through the rear rim and I thought it still would never break lose! Make SURE you keep the socket all the way on the nut and dosent slide half way off and strip the nut. Good luck!
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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LOCK 2121
Expert Class
Posts: 160
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posted September 01, 2009 07:09 PM
Change the counter as soon as possable the worn teeth make the chain ride up the theeth under power , slack back into the worn space, thats the vib's, It will destory a chain in no time, buy the best counter shaft sprocket you can , the danger of a cheap one it in the spline's wearing soon , and that wipe's out spline's on the out put shaft, once that wear happen's it will vibrate till the end , or new output shaft , Buy The Best Counter Shaft Sprocket Avalible!
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted September 01, 2009 07:16 PM
I've run vortex for a few years now with no problems...
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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bigtallguy
Novice Class
Posts: 86
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posted September 04, 2009 01:38 PM
Got it off with about 20 good hits from the impact wrench, that nut was on there rediculously tight, seemed like a lot more than the 92 ft/lbs the book calls for. Does the counter sprocket nut tighten while riding or something? There's no way it should be that hard to remove! And the shop said $112 just to change it out for me, maybe they knew how much work it would take.
The new sprocket did the trick though, no more vibes or noise. The old sprocket looked more worn once I got it off than I thought it was initially, suprised I wasn't hearing stuff with the old chain but was feeling and hearing it with the new one.
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted September 04, 2009 04:15 PM
good deal!
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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LOCK 2121
Expert Class
Posts: 160
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posted September 04, 2009 04:16 PM
The chain being streached & worn drop's in the worn teeth better, chain's , sprocket's wear out together, like to see thread on the type of chain used or liked the most, and sprocket's,
haven't needed to change mine yet .
Thank,s all for the info about the counter shaft sprocket nut .
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dcjens
Pro
Wet side of Washington
Posts: 1059
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posted September 05, 2009 04:02 AM
quote:
Got it off with about 20 good hits from the impact wrench, that nut was on there rediculously tight, seemed like a lot more than the 92 ft/lbs the book calls for. Does the counter sprocket nut tighten while riding or something? There's no way it should be that hard to remove!
I had a little situation happen with one of my old KZ's while zipping across the long bridge between Portland and washington many years ago. I was doing 80 mph in the far left lane when the bike seemes to pop into neutral. I pulled inthe clutch and checked each gear and neutral. Everything worked but it was still freewheeling (100ft above the water mind ya). I coasted off the bridge and pulled over and got the bike on the center stand. i took the counter shaft side cover off to find the sprocket and chain had came off the shaft and was spinning in the sprocket cover! the nut was still in the cover as well, loose. talk about LUCK! I hadn't had a reason to check the washer bent over properly. somebody before me hadn't done that obviously. I was able to put it all back together on the roadside and continue. I now appreciate why rediculously tight is good!!
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Black 06
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bigtallguy
Novice Class
Posts: 86
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posted September 05, 2009 07:54 AM
quote:
I had a little situation happen with one of my old KZ's while zipping across the long bridge between Portland and washington many years ago. I was doing 80 mph in the far left lane when the bike seemes to pop into neutral. I pulled inthe clutch and checked each gear and neutral. Everything worked but it was still freewheeling (100ft above the water mind ya). I coasted off the bridge and pulled over and got the bike on the center stand. i took the counter shaft side cover off to find the sprocket and chain had came off the shaft and was spinning in the sprocket cover! the nut was still in the cover as well, loose. talk about LUCK! I hadn't had a reason to check the washer bent over properly. somebody before me hadn't done that obviously. I was able to put it all back together on the roadside and continue. I now appreciate why rediculously tight is good!!
Wow, in that case I'd rather have it tight too. Just seemed excessive when my wife was putting all her weight on the rear brake, bike on the ground, and I was still spinning the tire. Didn't break a sweat with the impact though so I guess that's the moral of this story.
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dcjens
Pro
Wet side of Washington
Posts: 1059
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posted September 05, 2009 10:33 AM
when my wife was putting all her weight on the rear brake......
She's gonna smother you under a pillow now!
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Black 06
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