chain slack

eddiekay · October 18th, 2011, 06:37 AM

Near 15k on my original chain. Highway miles mainly.
I've always pulled the chain every few weeks.
Strange...hasnt needed it in past 5 or 6 weeks ( +/- 2000 miles).
What do you think ? ready to break ?

SteveL · October 18th, 2011, 07:27 AM

A well looked after chain should do 25K miles look at the teeth on the sprocket and the condition of the chain i.e. no rust no O rings sticking out, and it’s still good.

Steve

Scattcatt · October 18th, 2011, 09:31 AM

Measure the chain stretch, I believe 12.71 inches over 20 links is the service limit. Let me double check...

Okay the service limit is 12.72 inches (323mm)

over 20 links with 20 pounds (10kg, 98 N) hanging on the bottom of the chain to keep it tense.

Measure it in multiple spots though, in case the chain isn't stretching uniformly.

Sources: My service manual

eddiekay · October 18th, 2011, 09:42 AM

Thanks Zach,,

eddiekay · October 18th, 2011, 03:20 PM

A close look in daylight shows a worn sprocket.
Really happened fast....adjusted the chain maybe a month ago and i must've pulled it too tight. I'm pissed.
Lesson: dont pull chains at night by a flashlight becuz youre too lazy to get up 10 minutes early the next day before you ride.

nickjpass · October 18th, 2011, 05:01 PM

Does this mean you need a new sprocket?

Scattcatt · October 18th, 2011, 05:21 PM

Total bummer... Check the chain wear while you were at it? I'd be kind of iffy on keeping the chain regardless whether or not it was still within limits if that chain and sprocket were in the same set, might be better off getting a new set entirely, RK racing chains and Vortex sprockets would be my vote!

choneofakind · October 18th, 2011, 05:25 PM

Quote:

Originally Posted by nickjpass

Does this mean you need a new sprocket?

yes. that's exactly what it means. When it's time to replace the chain or sprockets, it's time to replace both, or else the one that didn't get replaced will just shred the brand new part relatively quickly

eddiekay · October 18th, 2011, 05:40 PM

Yeah...new sprocket....hoping the Kawa chain was tougher than the Bike Bandit sprocket though. Once I make some room in my porch I'll bring it in and look at the chain real careful, I'm les concerned with the quality of the parts than I am with not paying attention to what I did in the first place and NOT realizing something was wrong
Anyway...I could remount the stock sprock till spring, WTF, yeah, that's what I'll prob do

October 18th, 2011, 06:37 AM	#1
eddiekay ninjette.org certified postwhore Name: eddie Location: Lawnguylind Join Date: Nov 2009 Motorcycle(s): 300, WeeStrom Posts: A lot.	chain slack Near 15k on my original chain. Highway miles mainly. I've always pulled the chain every few weeks. Strange...hasnt needed it in past 5 or 6 weeks ( +/- 2000 miles). What do you think ? ready to break ?

October 18th, 2011, 07:27 AM	#2
SteveL old git Name: Steve Location: Geneve Switzerland Join Date: Mar 2009 Motorcycle(s): BMW K1300S Posts: 479	A well looked after chain should do 25K miles look at the teeth on the sprocket and the condition of the chain i.e. no rust no O rings sticking out, and it’s still good. Steve __________________________________________________ Some mistakes are too much fun to make only once.

October 18th, 2011, 09:31 AM	#3
Scattcatt ninjette.org sage Name: Zach Location: Michigan Join Date: Aug 2011 Motorcycle(s): 2008 Kawasaki Ninja 250R, 2003 Honda CBR600RR Posts: 721 Blog Entries: 1	Measure the chain stretch, I believe 12.71 inches over 20 links is the service limit. Let me double check... Okay the service limit is 12.72 inches (323mm) over 20 links with 20 pounds (10kg, 98 N) hanging on the bottom of the chain to keep it tense. Measure it in multiple spots though, in case the chain isn't stretching uniformly. Sources: My service manual __________________________________________________ ATGATT

October 18th, 2011, 05:01 PM	#6
nickjpass #squid Name: nickypoo Location: Five Guys Join Date: Jul 2011 Motorcycle(s): Track dedicated 2008 ZX6R Posts: A lot. MOTM - Jul '16	Does this mean you need a new sprocket? __________________________________________________

October 18th, 2011, 05:21 PM	#7
Scattcatt ninjette.org sage Name: Zach Location: Michigan Join Date: Aug 2011 Motorcycle(s): 2008 Kawasaki Ninja 250R, 2003 Honda CBR600RR Posts: 721 Blog Entries: 1	Total bummer... Check the chain wear while you were at it? I'd be kind of iffy on keeping the chain regardless whether or not it was still within limits if that chain and sprocket were in the same set, might be better off getting a new set entirely, RK racing chains and Vortex sprockets would be my vote! __________________________________________________ ATGATT

October 18th, 2011, 09:42 AM	#4
eddiekay ninjette.org certified postwhore Name: eddie Location: Lawnguylind Join Date: Nov 2009 Motorcycle(s): 300, WeeStrom Posts: A lot.	Thanks Zach,,

October 18th, 2011, 03:20 PM	#5
eddiekay ninjette.org certified postwhore Name: eddie Location: Lawnguylind Join Date: Nov 2009 Motorcycle(s): 300, WeeStrom Posts: A lot.	A close look in daylight shows a worn sprocket. Really happened fast....adjusted the chain maybe a month ago and i must've pulled it too tight. I'm pissed. Lesson: dont pull chains at night by a flashlight becuz youre too lazy to get up 10 minutes early the next day before you ride.

October 18th, 2011, 05:40 PM	#9
eddiekay ninjette.org certified postwhore Name: eddie Location: Lawnguylind Join Date: Nov 2009 Motorcycle(s): 300, WeeStrom Posts: A lot.	Yeah...new sprocket....hoping the Kawa chain was tougher than the Bike Bandit sprocket though. Once I make some room in my porch I'll bring it in and look at the chain real careful, I'm les concerned with the quality of the parts than I am with not paying attention to what I did in the first place and NOT realizing something was wrong Anyway...I could remount the stock sprock till spring, WTF, yeah, that's what I'll prob do

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