ADVrider

Go Back   ADVrider > Bikes > Orange Crush > Crazy-Awesome almost Dakar racers (950/990cc)
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-08-2012, 09:35 AM   #1
keener OP
Speed changes you.
 
keener's Avatar
 
Joined: Feb 2010
Location: Toronto, Canada
Oddometer: 925
tube came out with fold marks

I meant to post this for a while...I change a Hydano rear tire of my 950 that lasted over 17000km (Toronto, California round trip + riding more locally).

Anyway, the tube came out like this? What does it mean? Was the tube too big?

I think the size was 140, not sure. It was a ultra heavy duty. I had no problem and did not feel anything unusual while I had that tube and tire on.

__________________
04 ADV 950
keener is offline   Reply With Quote
Old 12-08-2012, 11:54 AM   #2
Denalidirt
High Plains Drifter
 
Denalidirt's Avatar
 
Joined: Jul 2006
Location: Denali, Ak.
Oddometer: 900
twisted

looks like it may have been twisted within the rim.
Denalidirt is offline   Reply With Quote
Old 12-08-2012, 12:03 PM   #3
Dustodust
Studly Adventurer
 
Dustodust's Avatar
 
Joined: Oct 2009
Location: Hillsboro Oregon
Oddometer: 835
Hmmm
I would guess that the tube was stretched out like a balloon inside the tire, and with no air pressure it relaxed into that appearance of kinked position

I like to use Talcum powder to allow the tube to slide in the tire casing

I am careful not to use powders containg corn starch in place of talc because corn starch liquefies when heated and gets weird and gummy, its OK on a babies butt but not optimum in a tube tire
__________________
04 KTM 950 S
04 KTM 525 EXC street plated
Dustodust is offline   Reply With Quote
Old 12-08-2012, 12:07 PM   #4
Dustodust
Studly Adventurer
 
Dustodust's Avatar
 
Joined: Oct 2009
Location: Hillsboro Oregon
Oddometer: 835
Did you have talc in there ?
__________________
04 KTM 950 S
04 KTM 525 EXC street plated
Dustodust is offline   Reply With Quote
Old 12-08-2012, 12:16 PM   #5
Denalidirt
High Plains Drifter
 
Denalidirt's Avatar
 
Joined: Jul 2006
Location: Denali, Ak.
Oddometer: 900
I have to disagree

I think that the tube was filed to pressure with the folds in the tube. I think the tube wasn't placed in the tire as flat as possible, when air was put in the kink could not expand horizontally and this kink was created as the tube pushed it vertically against the rim and tire. if you look at the two folds you can see that there are other unnatural lines on the tube as well. They line up with the kink and kind of spiral around the tube like the threads of a screw Talcum would help for sure, reducing the friction between tube and tire.
Denalidirt is offline   Reply With Quote
Old 12-08-2012, 12:23 PM   #6
Denalidirt
High Plains Drifter
 
Denalidirt's Avatar
 
Joined: Jul 2006
Location: Denali, Ak.
Oddometer: 900
It looks like the tire slipped on the rim about two inches. Without a rim lock this could also cause the tube to look like that, but I know how hard it is to break the bead on the 9xx rear so I think tire slip may be less likely. Again just my 2 cents.
Denalidirt is offline   Reply With Quote
Old 12-08-2012, 03:18 PM   #7
FakeName
Wile E Coyote SuperGenius
 
FakeName's Avatar
 
Joined: Jan 2007
Location: San Diego
Oddometer: 1,749
Maybe it is a 21" tube?
__________________
ADVdiscount Motorcycle Product Photography


2011 White 990 Adv S
2014 500EXC Black
FakeName is offline   Reply With Quote
Old 12-08-2012, 04:21 PM   #8
Weldit
Gnarly Adventurer
 
Weldit's Avatar
 
Joined: Nov 2009
Location: Muskoka Ontario Canada
Oddometer: 335
I like to let the air out after seating the beads
this way the tube can relax - hopefully letting wrinkles unfold
maybe even bounce it on floor to help
then put air back in to final pressure

also I always put the tube in the tire with a small amount of air in it
this way avoiding some wrinkles and helps stop the tire irons from pinching tube
somewhere a guy showed the right amount of air was such that the tube would
just kink over one of your fingers.

I also use baby powder - will have to check if it has any corn starch ?
__________________
'11 Dakar 990
Weldit is offline   Reply With Quote
Old 12-10-2012, 10:27 AM   #9
Deepc
Gnarly Adventurer
 
Joined: Apr 2011
Location: St. Petersburg, Florida
Oddometer: 299
I had the same problem. It was also a heavy duty rear.
Deepc is offline   Reply With Quote
Old 12-11-2012, 02:01 PM   #10
geometrician
let's keep going...
 
geometrician's Avatar
 
Joined: May 2008
Location: West-By-God Virginia
Oddometer: 1,026
That pic wasn't as bad as I thought it was gonna be- I've seen tubes come out of tires that have literally been twisted sidways and filled, with fold lines wrapping around the entire tube. These were on customer bikes where the tire had been (unknowingly) used for years, so even though scary they still (somehow) worked!

Quote:
Originally Posted by Weldit View Post
I like to let the air out after seating the beads
this way the tube can relax - hopefully letting wrinkles unfold
maybe even bounce it on floor to help
then put air back in to final pressure

also I always put the tube in the tire with a small amount of air in it
this way avoiding some wrinkles and helps stop the tire irons from pinching tube
somewhere a guy showed the right amount of air was such that the tube would
just kink over one of your fingers.

I also use baby powder - will have to check if it has any corn starch ?
+5, especially on leaving a small amount of air in the tube- it helps on manual tire jobs & tire changing machines (DAMHIK) I hate pinched tubes caused by my own hands!

my dad taught me to remove the valve core to quickly deflate the tire to help line the tube up. If it's a tough tire/tube job, I'll even fill/de-air twice.

Some baby powder is corn starch (turns out talc is carcinogenic as well as a repiratory irritant) but most isn't.
__________________
Britt
'06 KTM 950 Adv 'S'
'03 KTM 250 EXC
'87 KLR650 - <200K miles "Like the Energizer Bunny, just keeps going & going..."
geometrician is online now   Reply With Quote
Old 12-11-2012, 08:36 PM   #11
Dustodust
Studly Adventurer
 
Dustodust's Avatar
 
Joined: Oct 2009
Location: Hillsboro Oregon
Oddometer: 835
You might be Ok with corn starch , unless the tire gets hot . When corn starch gets hot it absorbs moisture from the atmopsphere better , heat increases the corn starches ability to absorb moisture and air is 30% moisture, Knobbies generate a lot of heat on the road., Wet and warm the cornstarch can crosslink and turns to glue.
Does the opposite of what was intended . The glue on envelopes is cornstarch. . I have taken out tubes and wondered what that sticky gunk stuff was and pinned it down to corn starch

I thought the carcinogenic suspect of Talc was still debatable , I'm sure we ride through much worse dust than that.on an average desert ride
you can iuse cornstarch powder
I prefer the talc
__________________
04 KTM 950 S
04 KTM 525 EXC street plated
Dustodust is offline   Reply With Quote
Old 12-12-2012, 01:22 PM   #12
FakeName
Wile E Coyote SuperGenius
 
FakeName's Avatar
 
Joined: Jan 2007
Location: San Diego
Oddometer: 1,749


Keeps my tubes cool, dry and comfortable. Nicely scented, too.

Besides, it's in my gear bag.
__________________
ADVdiscount Motorcycle Product Photography


2011 White 990 Adv S
2014 500EXC Black
FakeName 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 04:52 AM.


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