ADVrider

Go Back   ADVrider > Bikes > Thumpers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-28-2013, 10:39 PM   #1
GEORGE K OP
Adventurer
 
Joined: Apr 2004
Location: Gig Harbor, Wa.
Oddometer: 45
Tire change question, need help.

When mounting a tubed tire is vertical centering of the tire critical when putting air in the tube. I am seeing a quarter inch difference between one side of the wheel and the opposite side. I have deflated and reinflated several times and resoaped the rim to reduce friction but it just won't center radially on the rim. I am wondering if just riding it won't cause things to center up due to centrifigal force and tire loading.
The tire is a 3:00x21 Avon Distanzia on a Yamaha XT 250. I am seeing a similar thing with the back tire which is a 120x80x18 Avon Distanzia.
Any suggestions or advice out there?

Thanks,
George K
GEORGE K is offline   Reply With Quote
Old 04-28-2013, 10:46 PM   #2
Renaissanceman
DON'T PANIC!
 
Renaissanceman's Avatar
 
Joined: Feb 2007
Location: Corvallis, OR
Oddometer: 185
Sounds to me like the bead hasn't seated. What happens if you put 50 lbs of air in it?
__________________
There is no problem so big you can't make it worse
Renaissanceman is offline   Reply With Quote
Old 04-28-2013, 11:06 PM   #3
deathu
Adventurer
 
deathu's Avatar
 
Joined: Oct 2011
Location: Bucharest
Oddometer: 77
Are those tires you are mounting marked as TT or TL? Especially if they are marked TL they may require a much higher pressure for the bead to seat properly. IIRC my TL marked anakees required several reinflations up to around 70 psi and a lot of soapy water to seat properly (on normal spoked rims using tubes). By contrast the TT MT21s required only 40psi and no re-inflation at all.
deathu is offline   Reply With Quote
Old 04-29-2013, 12:18 AM   #4
dickensheets
smprparatus
 
Joined: Dec 2009
Location: Las Cruces, NM
Oddometer: 255
I always spray a little silicone spray lube on the rim. Helps the tire "blomp" onto the thingy. Works well.
dickensheets is offline   Reply With Quote
Old 04-29-2013, 07:54 AM   #5
GEORGE K OP
Adventurer
 
Joined: Apr 2004
Location: Gig Harbor, Wa.
Oddometer: 45
Thanks

Thanks guys. They passed the overnight leak check so I think I will do a test ride to see how lumpy they are, or are not, and to see if bead dimensions change. If needed I will deflate, lubricate with silicone spray, and re inflate to higher pressure as suggested.
They are S rated tubeless with a tube so a bit of a bastard configuration...
GEORGE K is offline   Reply With Quote
Old 04-29-2013, 11:19 AM   #6
LittleRedToyota
Yinzer
 
LittleRedToyota's Avatar
 
Joined: Apr 2011
Location: Pittsburgh
Oddometer: 2,232
you need to get the bead seated. i wouldn't trust riding at street speeds without it being seated myself.

when i have a bead that doesn't want to seat, i spray a bunch of dish soap/water mix in/on/around where it won't seat. then i pump them up to about 70 or 80psi (DOT knobbies that i actually run at 8 to 20psi depending on terrain). then i put the tire near a heat source or our in the sun so it warms up.

never had one not seat after a few hours with high pressure in it and sitting near a heat source (warms up the tire and makes it more pliable so it slips over the bead easier and also increases the air pressure inside while it heats up).
LittleRedToyota is offline   Reply With Quote
Old 04-29-2013, 11:26 AM   #7
Yooper_Bob
Beastly Adventurer
 
Yooper_Bob's Avatar
 
Joined: Aug 2005
Location: Da UP, eh! (Marquette, MI)
Oddometer: 2,669
I have found that bouncing the tire/rim combo like a basketball while rotating it slightly between each bounce, helps to "push" the bead into the proper location.
Yooper_Bob is offline   Reply With Quote
Old 04-29-2013, 12:02 PM   #8
GEORGE K OP
Adventurer
 
Joined: Apr 2004
Location: Gig Harbor, Wa.
Oddometer: 45
Good info!

Thanks again. I will work the problem before the ride as suggested. Good idea on the high pressure and sunshine. I had been tenative about using such high pressure but it sounds like it has worked for others safely so I will give it a try. I did try the bouncing techniue which has worked before but these two tires are tough customers...
GEORGE K is offline   Reply With Quote
Old 04-29-2013, 12:21 PM   #9
clapped_r6
The Spoad Warrior
 
clapped_r6's Avatar
 
Joined: Jan 2006
Location: Ridgefield, WA
Oddometer: 2,685
i always talc my tubes, and put a little on the bead. that helps.
if they do what yours are doing, i pull the valve stem to de-air and smoosh the tire around a bit, then air up again.
go up to 40 or 50 psi and let them sit a bit.
__________________
none of us is as dumb as all of us
clapped_r6 is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 03:04 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014