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 10-17-07, 05:36 AM   #1
fritz1255
Senior Member
Thread Starter
 
Join Date: May 2005
Location: SE Pennsylvania
Bikes: Vintage French road bikes, older "rescue" mountain bikes
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Patch a 700x23-25 tube?

The actual tire is a 27x1, but it uses the thin (1") 700 tube. I recently had a flat, and all attempts to patch the tube were useless - rubber seems to be too thin to hold the large, thick patches in the repair kit I had. Also, trying to reinstall with steel tire irons was a big mistake - did more damage to the tube when I put the tire on. I finally gave up after about three attempts (and patches), bought a new tube and plastic tire "irons", and VERY CAREFULLY installed the new tube and old tire. Success at last, but a question going forward - are these tubes essentially "one use" (discard when flat), or can they be patched? What has been anyone else's experience?
fritz1255 is offline   Reply With Quote
Old 10-17-07, 06:34 AM   #2
I_bRAD
Call me The Breeze
 
I_bRAD's Avatar
 
Join Date: Aug 2006
Location: Corbyville Ontario
Bikes: 2004 Litespeed Siena, 1996 Litespeed Obed, 1992 Miele (unknown model), 1982 Meile Uno LS.
Posts: 3,699
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I patch 700x23 tubes all the time. I use Rena patches if it matters. Best to patch ahead of time and let it dry for a day or so before you use them.
I_bRAD is offline   Reply With Quote
Old 10-17-07, 06:41 AM   #3
vpiuva
*
 
vpiuva's Avatar
 
Join Date: Jan 2007
Bikes:
Posts: 3,458
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I cut the patches into smaller sizes if they're too large. And I do think these small thin tubes are harder to patch. My repairs tend to leak if I don't let them dry a while.

A little OT, but kevlar bead/folding tires can often be installed with 2 strong thumbs and no tire irons. Another reason to buy them over wire bead.
vpiuva is offline   Reply With Quote
Old 10-17-07, 06:45 AM   #4
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,918
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 96 Post(s)
They are easy to patch if you use the right patches and glue. Rema patches are the world's standard and available in patch kits from any LBS or in boxes of 100 (share them) from Bike Tools Etc. or The Third Hand.

The glue that comes with the patch kits is good but the small tubes dry out almost as soon as they are opened. I use Elmer's Rubber Cement that I get in 4-oz bottles at any office supply or X-mart. When it's reasonably fresh it works every bit as well as the kit tubes and can be used for all sorts of things around the house too.

Be sure to scuff the area around the puncture with the sandpaper included in the kits to remove the molding compound or any loose dirt.

BTW, most tires can be reinstalled with thumb pressure only and that guarantees the tube isn't damaged. Try it that way first and use the "tire irons" only as a last resort.
HillRider is offline   Reply With Quote
Old 10-17-07, 07:06 AM   #5
Soil_Sampler
A little North of Hell
 
Join Date: Mar 2006
Bikes:
Posts: 4,811
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Rema

The 25mm patches are a little bit harder to use on 21-23mm tubes.
http://www.biketoolsetc.com/index.cg...item_id=RE-F0P
http://www.biketoolsetc.com/index.cg...item_id=RE-F1P
Soil_Sampler is offline   Reply With Quote
Old 10-17-07, 07:22 AM   #6
supcom
You need a new bike
 
supcom's Avatar
 
Join Date: Aug 2002
Bikes:
Posts: 5,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Since the patch adheres to the surface of the tube, the thickness of the tube wall is not a factor. More likey, you either did not prepare the surface adequately using the small piece of sandpaper supplied with the kit or you got in a hurry and did not allow time for the glue to dry on the tube before applying the patch.
supcom is offline   Reply With Quote
Old 10-17-07, 08:23 AM   #7
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by supcom View Post
Since the patch adheres to the surface of the tube, the thickness of the tube wall is not a factor.
When I read the OP that was my first thought also, but I believe he meant "too narrow".
Al1943 is offline   Reply With Quote
Old 10-17-07, 08:25 AM   #8
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by vpiuva View Post
I cut the patches into smaller sizes if they're too large.
+1
Cut them smaller. Carry the smaller sizes if you patch on the road.
Al1943 is offline   Reply With Quote
Old 10-17-07, 08:37 AM   #9
RK1963
Senior Member
 
RK1963's Avatar
 
Join Date: Mar 2005
Bikes:
Posts: 580
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by I_bRAD View Post
I patch 700x23 tubes all the time. I use Rena patches if it matters. Best to patch ahead of time and let it dry for a day or so before you use them.
+1
RK1963 is offline   Reply With Quote
Old 10-17-07, 09:38 AM   #10
Pig_Chaser
Senior Member
 
Pig_Chaser's Avatar
 
Join Date: Sep 2007
Location: Edmonton, AB
Bikes: '07 Giant OCR3
Posts: 1,144
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by I_bRAD View Post
I patch 700x23 tubes all the time. I use Rena patches if it matters. Best to patch ahead of time and let it dry for a day or so before you use them.
+2
I carry a spare tube, that way you can swap it on the road, and patch the other tube at your leisure.
Pig_Chaser is offline   Reply With Quote
Old 10-17-07, 12:16 PM   #11
CdCf
Videre non videri
 
Join Date: Sep 2004
Location: Gothenburg, Sweden
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
Posts: 3,208
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yeah, I had the same problem as the OP. Can't get any patch kits here that have suitable sizes for the patches. They're all made for the majority of bikes here, which typically have 40-50 mm tyres, and tubes to match...

I just carry spare tubes now.
CdCf is offline   Reply With Quote
Old 10-18-07, 08:18 AM   #12
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,918
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 96 Post(s)
Quote:
Originally Posted by Pig_Chaser View Post
+2
I carry a spare tube, that way you can swap it on the road, and patch the other tube at your leisure.
I do too. One problem is that you often can't locate the puncture in the tube using a frame or mini-pump so you don't even know where to patch it. I carry a spare tube and replace the bad one on the road. Then, I repair the punctured one when I have the right tools and am dry and warm.
HillRider is offline   Reply With Quote
Old 10-18-07, 09:12 AM   #13
I_bRAD
Call me The Breeze
 
I_bRAD's Avatar
 
Join Date: Aug 2006
Location: Corbyville Ontario
Bikes: 2004 Litespeed Siena, 1996 Litespeed Obed, 1992 Miele (unknown model), 1982 Meile Uno LS.
Posts: 3,699
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by HillRider View Post
I do too. One problem is that you often can't locate the puncture in the tube using a frame or mini-pump so you don't even know where to patch it. I carry a spare tube and replace the bad one on the road. Then, I repair the punctured one when I have the right tools and am dry and warm.
Same here. I have a "good" and "bad" pile of tubes at home. When I have time I go through and patch the salvageable ones and return them to the "good" pile.

I've got tubes of the vulcanizing fluid that must be 2 years old and are still fine. Why are yours drying out so fast?
I_bRAD is offline   Reply With Quote
Old 10-18-07, 12:30 PM   #14
DanPT
Senior Member
 
Join Date: Aug 2005
Location: Brossard (Montreal), QC, Canada
Bikes:
Posts: 113
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
First you need to shop for patch in an LBS or at least some place that carry a lots of 700cX23 tire. They should have smaller patch that fit 23mm properly.

The key to proper patching is to let the glue dry, it's counter-intuitive for newb but it work.

First use the sand-paper on the tube where the hole is.

Now rubb in a thin layer of glue on your tube the thinner layer the faster it dry.

Now wait 1-2 min for the glue to appear completely dry, You may blow on it if you feel that it help drying.

Now remove the aluminum from the patch keep the plastic on the patch.

Stick it to the tube and press to ensure proper contact of the patch. You can leave the plastic there. Put the tube back on the wheel.

Now I also carry extra tube and patch my tube at home most of the time but always carry patch kit in case.

Last edited by DanPT; 10-18-07 at 10:11 PM.
DanPT is offline   Reply With Quote
Old 10-18-07, 02:13 PM   #15
oldster
Senior Member
 
Join Date: Sep 2007
Location: Denver, Co.
Bikes:
Posts: 699
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
One thing I found the other day, for at home repairs, I cleaned the area where the patch goes with lacquer thinner. It was clean and very tacky and did not require the sandpaper..Acetone would probably work as well.
Bud
oldster is offline   Reply With Quote
Old 10-18-07, 02:46 PM   #16
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,918
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 96 Post(s)
Quote:
Originally Posted by I_bRAD View Post
I've got tubes of the vulcanizing fluid that must be 2 years old and are still fine. Why are yours drying out so fast?
Unopened, those little glue tubes last for years. However, as soon as you use one, it dries out in a few weeks or months as you can't reseal it effectively. So, realistically they are single use items unless you have a LOT of flats.

Since patch kits usually contain 6 patches, you need another source of glue for patches 2 through 6.
HillRider 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 03:47 PM.