|
08-26-2009, 10:16 PM | #1 |
Join Date: Jun 2009
Posts: 56
|
Zong Sierrra: Silly Rabbit, Bike chains are for kids?
I have adjusted this chain probably 5 times at least in the last 1000 miles, but keeps jumping back to the old setting? What am i doing wrong?
Heres the scenario: For example, If you look at the chain tensioner doohickey it looks almost like a 3/4 of a clock... with groove positions at 1oclock, 2oclock, 3oclock, 4oclock, 5oclock, 6oclock, 7oclcok, 8oclock, 9oclock and so on. When I first got the bike, the tensioner pin was sitting in the 5oclock position, and after some riding the chain loosened up quite a bit. So i adjusted it to the 6oclock position which tightened the chain up some but still allowed some play in the chain. I tighten everything up, TIGHT! and i send my son on his merry way. A week later, i check the bike and both tensioners are back at the 5oclock position again! How is this happening? Currently I am using a 1/2" breaker bar (both sides) on the thing and it is TIGHT when it leaves me. Am i doing something wrong? how do i keep the chain tension to the proper amount? |
|
08-26-2009, 10:48 PM | #2 |
Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
|
Is it getting jumped?
__________________
<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
|
08-26-2009, 11:56 PM | #3 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
|
Maybe there's a clue in the chain tension. How are you determining what the correct tension should be?
__________________
Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
|
08-27-2009, 12:06 AM | #4 |
Join Date: Jun 2009
Posts: 56
|
No, the bike is electric started only.
I am roughly gauging the tension. I am leaving it with about 1/2 inch play upward or downward while my son is sitting on the bike. When its in the 5oclock position (the position it seems to jump back to)there is about 1 to1 1/2 inch play in the chain in either direction, and to me it seems to be too much. |
|
08-27-2009, 12:12 AM | #5 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
|
Does your bike have a spring loaded chain tensioner?
__________________
Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
|
08-27-2009, 12:54 AM | #6 |
Join Date: Jun 2009
Posts: 56
|
not sure since i didnt get a manual... but its a zongshen sierra
|
|
08-27-2009, 03:26 AM | #7 | |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
|
Quote:
DW, are you saying that the chain snail adjusters are returning to a previous, lower setting? That shouldn't happen unless someone is loosening the rear axle bolt. AZ is asking you if your son is jumping the Zong off small hills, and landing with a substantial impact. This behavior might stretch the chain enough to pull the snail adjusters back to a lower setting. Spud
__________________
Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
|
|
08-27-2009, 09:10 AM | #8 |
Join Date: Jun 2009
Posts: 56
|
Spud,
Yes. I adjust them to one position and later it returns to the previous position. OH! 8O. As far as i know he hasn't been jumping the bike, its primarily a commuter bike. But he is 19 years old and he has been on the trails with me. I wouldn't put it past him if he has jumped it recently. I will ask him tonight. Is there any limit to how tight the axle bolts can be? I mean i kind of worry i might make it too tight. (which might be part of the problem) Dave |
|
08-27-2009, 11:04 AM | #9 |
Join Date: Mar 2009
Location: Southeastern Washington desert
Posts: 14,761
|
I don't know what's causing the problem but I don't see how jumping or otherwise beating up the bike would do it.
1/2 inch slack would be way too tight on my HSUN, so maybe it's the same on a Zong. Try adjusting it with your son on the bike and the suspension compressed. You may also have a lubricant on the axle bolt that allows it to move. Personally in 30 years or riding and wrenching that's a new one on me.
__________________
Happy to serve. |
|
08-27-2009, 11:25 AM | #10 | ||
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
|
Quote:
Quote:
http://www.boltscience.com/pages/convert.htm I would guess you need to tighten the rear axle nut harder, DW. Spud
__________________
Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
||
|
08-27-2009, 11:51 AM | #11 | |
Join Date: Apr 2009
Location: Desert of Eastern WA
Posts: 99
|
Quote:
??? The Zongshen sierra has both options, electric start and kick start. When you loosen it to adjust it, after you get it where you want it, do you push forward on the wheel before tightening the bolt to get all the slack out? (meaning no space between the stud on the swing arm and the adjuster plate) Also, every time I adjust mine, I put a small dab of loc-tight on the bolt just for peace of mind.
__________________
EX: Zong owner |
|
|
08-27-2009, 12:23 PM | #12 | |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
|
Quote:
Spud
__________________
Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
|
|
08-27-2009, 12:34 PM | #13 | ||
Join Date: Apr 2009
Location: Desert of Eastern WA
Posts: 99
|
Quote:
__________________
EX: Zong owner |
||
|
08-27-2009, 12:36 PM | #14 |
Join Date: Mar 2009
Location: Southeastern Washington desert
Posts: 14,761
|
Good point. I whack the rear tire forward with my fist or a rubber mallet.
Don't whack it off the stand, however... :roll:
__________________
Happy to serve. |
|
08-27-2009, 02:58 PM | #15 |
Join Date: Jun 2009
Posts: 56
|
Yep, I have knocked the tire forward and backward from the pin to unseat and seat it.
I will try to locktite the bolt, and also will use a torque wrench to tighten the bolt to see if i have any better results.. thanks for the help! Dave |
|
|
|
|
|