Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-16-02, 09:48 AM   #1
nikos
1,520,000
Thread Starter
 
nikos's Avatar
 
Join Date: Aug 2001
Location: madison, wi
Bikes:
Posts: 676
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
First flat - and I could not fix it!

Alright, its been a year that I have had my Bianchi Tallada road bike with the real narrow tires. Anyways, got my first flat - back tire. Got the tire off and had a hassel getting the new tube in. The problem I had was the inflate stem, it would come all the way through the rim - so I couldnt get my pump to latch on! I was a mile from work and a presentation 25 minutes away - called a co-worker and had her pick me up. Needless to say- I felt like a real tool. Any helpful tips, this is my first bike with the real narrow tires and all. thanks,
nikos is offline   Reply With Quote
Old 07-16-02, 10:08 AM   #2
threadend
Career Cyclist
 
threadend's Avatar
 
Join Date: Feb 2002
Location: Michigan, USA
Bikes:
Posts: 551
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally posted by nikos
... The problem I had was the inflate stem, it would come all the way through the rim - so I couldnt get my pump to latch on!...
the stem would or would not come all the way through the rim?
__________________
2003 Iceman Challenge - 2:34:55 - 897 / 2,000*
2002 Iceman Challenge - 2:39:23 - 1093 / 2,186
2000 Iceman Challenge - 2:49:18 - 1516 / 2,153
*estimated
threadend is offline   Reply With Quote
Old 07-16-02, 10:28 AM   #3
mechBgon
Senior Member
 
mechBgon's Avatar
 
Join Date: Jul 2002
Bikes:
Posts: 6,957
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Bummer! I assume it uses Presta valves?

If the stem just doesn't stick out far enough to get a solid lock on it with your pump, try using a Presta-to-Schrader adapter, which is usually only $1-2, and set your pump's head for Schrader. That extends the valve and keeps it from falling into the rim while you pump.
mechBgon is offline   Reply With Quote
Old 07-16-02, 10:37 AM   #4
nikos
1,520,000
Thread Starter
 
nikos's Avatar
 
Join Date: Aug 2001
Location: madison, wi
Bikes:
Posts: 676
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The stem would come totally through. Should I have put on the litttle nut that comes with the tube, put that on right away after inserting the stem through the rim. I have shimano rims that have the oval shape to them, almost making it more difficult to push the stem in all the way. Also, it sure was hard trying to get the tire back on without pinching the tube or getting it twisted - I was very frustrated. Im just going to take it to the local shop and have them show me how to do it. I have a time trial this weekend, I better know how to do it right - I wont have a cell phone on me during that.
nikos is offline   Reply With Quote
Old 07-16-02, 10:49 AM   #5
mechBgon
Senior Member
 
mechBgon's Avatar
 
Join Date: Jul 2002
Bikes:
Posts: 6,957
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I see, you have a pair of the Shimano wheels along the lines of these, right?



Do you use an inner tube with a super-long valve natively, or do you use an inner tube with a standard-length (short) valve plus a valve extender?
mechBgon is offline   Reply With Quote
Old 07-16-02, 11:14 AM   #6
threadend
Career Cyclist
 
threadend's Avatar
 
Join Date: Feb 2002
Location: Michigan, USA
Bikes:
Posts: 551
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Couple hints / tips for your next attempt.

Yes, put the little nut back on the stem prior to connecting your pump, be sure the tire is on the rim correctly at the valve location because the tube will trap the tire to the rim at this point. This is actually helpful, it's almost like a third hand holding the tire on the rim for you.

Slightly (very sllightly for road bikes) inflate the tube before trying to reassemble the tire / tube / rim combo. That will help you with positioning the tube. CAUTION: Pre-inflating the tube to much will cause you other problems.

Best wishes in the TT
__________________
2003 Iceman Challenge - 2:34:55 - 897 / 2,000*
2002 Iceman Challenge - 2:39:23 - 1093 / 2,186
2000 Iceman Challenge - 2:49:18 - 1516 / 2,153
*estimated
threadend is offline   Reply With Quote
Old 07-16-02, 09:10 PM   #7
roadbuzz
Just ride.
 
roadbuzz's Avatar
 
Join Date: Oct 2000
Location: C-ville, Va
Bikes:
Posts: 3,246
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you're out in the boonies, and don't have a dork-nut on the stem, press the base of the stem (through the tire) against the rim, to stop it from pushing through.

And an aside from roadbuzz's encyclopedia of cycling lessons, volume 208, lesson #16,086,597:
Every so often, in the comfort of your home or garage, change a tire, or deflate, dismount, and remount a tube and tire using only your on-the-road bike tools. Especially if you use a frame pump. This way you can be sure everything is working when you have a roadside flat, and you'll have some sense what pressure is right, etc. (Be sure to check your patch kit from time to time, too. Vulcanizing glue dries up.)
roadbuzz is offline   Reply With Quote
Old 07-16-02, 10:09 PM   #8
Dirtgrinder
Dances with Rocks
 
Dirtgrinder's Avatar
 
Join Date: Apr 2001
Location: Jefferson City, MO
Bikes:
Posts: 1,441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
From the sound of it mechBgon is right. I had the same problem with the wheels/tube on my cross bike. It came with the super long presta valves. No local bike shop had any. The standard presta valves don't protrude far enough to get the nut on. But if you leave the valve open and put on a Schrader adaptor, it will work fine. Mine's been like that for a couple months now with no problems.
__________________
If everything seems under control, you're just not going fast enough...

To become a registered member of BikeForums Click Here
Dirtgrinder is offline   Reply With Quote
Old 07-16-02, 10:31 PM   #9
orguasch
riding a Pinarello Prince
 
orguasch's Avatar
 
Join Date: Jul 2000
Location: Downtown Toronto,Canada
Bikes: Pinarello, Prince and an FP5
Posts: 2,409
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
nikos, you will be able to figure it out, there's always a first time to everything
__________________
"Racso", the well oiled machine;)
orguasch is offline   Reply With Quote
Old 07-17-02, 12:21 AM   #10
RacerX
Senior Member
 
RacerX's Avatar
 
Join Date: Feb 2002
Location: Left Coast
Bikes:
Posts: 1,717
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
nikos,
You gotta go with 60mm long valve stem innertubes. It is a standard size you should find anywhere. 45mm is ok for the Shimanos too but it doesn't hurt for that extra length for the pump to grab.

Shimano wheels such as those pictured above are notoriously difficult to change tires on. The rim is really narrow and tall, meaning you have to pull that tire WAY over the top to get it seated. It is very easy to pinch flat the Shimano wheels while changing tires. It takes a bit of practice- it's not the quick n' easy change as some other wheelsets.

60mm valves and some talc on the tube will make life a bit easier.
Good luck!
RacerX is offline   Reply With Quote
Old 07-17-02, 07:13 AM   #11
nikos
1,520,000
Thread Starter
 
nikos's Avatar
 
Join Date: Aug 2001
Location: madison, wi
Bikes:
Posts: 676
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yeah, it was the short stem, not the extended. The bike shop that I purchased my Bianchi from tossed me some extra tubes with the bike, and they were the wrong ones. Well, got the extended and a quick lesson in changing.
nikos is offline   Reply With Quote
Old 07-17-02, 01:19 PM   #12
Joe Gardner
BikeForums Founder
 
Joe Gardner's Avatar
 
Join Date: Oct 1999
Location: Utah.
Bikes:
Posts: 4,249
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Nikos, I have had really good luck with Torelli extra long valve inter tubes. I just picked up 20 tubes from the LBS for $100! Should last me a few years!
Joe Gardner is offline   Reply With Quote
Old 07-17-02, 03:39 PM   #13
orguasch
riding a Pinarello Prince
 
orguasch's Avatar
 
Join Date: Jul 2000
Location: Downtown Toronto,Canada
Bikes: Pinarello, Prince and an FP5
Posts: 2,409
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally posted by Joe Gardner
Nikos, I have had really good luck with Torelli extra long valve inter tubes. I just picked up 20 tubes from the LBS for $100! Should last me a few years!
Joe, wow, that is a real bargain,, some time last week I was buying inner tubes like crazy, Like they cost me $9.00 per tube and that is 15 % tax. that , is a real bargain....
__________________
"Racso", the well oiled machine;)
orguasch is offline   Reply With Quote
Old 07-18-02, 01:55 PM   #14
RonH
Life is good
 
RonH's Avatar
 
Join Date: Jan 2001
Location: Not far from the Withlacoochee Trail. 🚴🏻
Bikes: 2001 Litespeed Tuscany and 2014 Cannondale SuperSix EVO Hi-Mod
Posts: 16,666
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 178 Post(s)
Quote:
Originally posted by Joe Gardner
I just picked up 20 tubes from the LBS for $100! Should last me a few years!
I guess you're expecting a few flats.
__________________


The LORD is merciful and gracious, slow to anger, and plenteous in mercy. - Psalm 103:8
RonH is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off



All times are GMT -6. The time now is 07:46 AM.