Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Proper cleaning of a tubular rim?

Notices
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.

Proper cleaning of a tubular rim?

Old 04-12-20, 07:38 PM
  #1  
Tomm Willians
Senior Member
Thread Starter
 
Tomm Willians's Avatar
 
Join Date: Mar 2020
Location: Nevada County, California
Posts: 605

Bikes: Subject to change at any given moment but currently is...... Colnago Mapei, Colnago C40, Wilier Triestina Carbon, Wilier Triestina Ramato, Follis 472, Peugeot PX60, Razesa, Orbea Terra, Soma Pescadero and 1/2 owner of a Santana tandem.

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 250 Post(s)
Liked 589 Times in 190 Posts
Proper cleaning of a tubular rim?

Today I found the need to pull one of my tubulars of the Zipp rim as I couldn’t get it to inflate. I suspected (correctly) that the valve had shut causing the problem. Once I pulled the tire off (with considerable difficulty) I discovered that the tire was installed using Tufo tape but there was still a considerable layer of glue under the tape. I was a bit surprised by this as the previous owner was a detail oriented former TT competitor that I assumed would have cleaned the glue off before applying the tape.
Not a big deal ? Cleaning old glue has been a major pain in my limited experience, if the rim doesn’t need to be virtually glue free it would save a LOT of time.
Tomm Willians is offline  
Old 04-12-20, 07:46 PM
  #2  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 16,593

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Srewart 650B ATB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3577 Post(s)
Liked 2,435 Times in 1,546 Posts
Not cleaning off old glue was the norm back in the day. If the glue didn't pull off with the tire's removal it was pretty well bonded with the rim, just what you want a sew up glue to be. Also some sew up tape instructed the installer to use a base layer of glue before the tape was used. I don't remember what the various Tufo tapes instructed users to do any more. Maybe you can search for an instruction sheet on line to find out, or visit a LBS that stocks Tufo tape and read the included instructions

Either way I don't think it maters if old glue is still there as long as it's not so thick as to cause a lumpy tire seating. For what it's worth the many tens of thousands of miles (and dozens of tires) I rode on sew ups I only used rim tape as an on the road flat replacement, a temporary situation as the spare tire was removed and the tire (new or spare) was glued as usual.

this isn't a bad question as rolling a tire is always a nasty thing (I can still hear the sound that a tireless rim makes on pavement as it slides out) Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Likes For Andrew R Stewart:
Old 04-12-20, 08:54 PM
  #3  
woodcraft
Senior Member
 
woodcraft's Avatar
 
Join Date: Apr 2012
Location: Nor Cal
Posts: 6,015
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 1814 Post(s)
Likes: 0
Liked 919 Times in 567 Posts
IME, the old standard of leaving a thick bed of glue does not work so well with modern (Mastik) glues, which, being thinner, want a smoother surface.

This also applies to tape, from what I've read.

I use a curved carving gouge to remove glue, whether just the lumps, or all. It take a bit of time but doesn't make the mess of a wire wheel, nor the toxics of solvents.

If the valve problem included an old style extension, it's worth it to replace with the kind that puts the valve core where you can deal with it, and if it's an older Vittoria

tire with those stupid removable stems, consider junking the tire.
woodcraft is offline  
Old 04-12-20, 08:59 PM
  #4  
speedevil 
I never finish anyth
 
speedevil's Avatar
 
Join Date: Jul 2010
Location: Western KY
Posts: 1,122

Bikes: 2008 Merckx LXM, 2003 Giant XTC mtb, 2001 Lemond Alpe d'Huez, 1997 Lemond Zurich, 1989 Cannondale ST, 1988 Masi Nuovo Strada, 1983 Pinarello Turismo

Mentioned: 63 Post(s)
Tagged: 0 Thread(s)
Quoted: 294 Post(s)
Liked 135 Times in 85 Posts
The makers of Effetto Mariposa Caronga tape say that the rim should be completely clean for the best bond between the tire and the rim. Other makers may have different recommendations, but tape will always stick best on a smooth and clean surface.

A new layer of glue will soften the old glue, but the adhesive in the tape won't do that, or at least not nearly as well.

If you intend to use tape I would recommend that you clean the old glue off, I would avoid using a wire brush to remove the old glue. I had very good results using the Effetto rim cleaner - you could not tell that a tubular had ever been glued on the rim.
__________________
Dale, NL4T
speedevil is offline  
Likes For speedevil:
Old 04-12-20, 09:40 PM
  #5  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 10,744

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
Quoted: 3553 Post(s)
Liked 2,350 Times in 1,539 Posts
I've used Tubasti for decades. Never cleaned rims. (Sometimes scrape highs down and fill lows but if the glue was stuck solidly, I trusted it and the glue added to it far more than anything to a clean rim.)

I just went onlne to verify that Tubasti was still available. Amazon, yes. Then Jensen "no longer available". What? Now, is that Amazon Tubasti of who knows how old stock? Is it still being made? Went to Velox website. Took a little searching. (Saw Clement solvent first and my heart sank again.) Then the tab for Glue for Tubular. And there it was. Tubasti, by the tube, by the tub! Yeah! (Now, if I lived in a very hot area, especially with hot descents, I wouldn't use Tubasti. But for the Pacific NW, SF Bay Area, Michigan and New England, it is the stuff. (And maybe descents on CF rims but I have yet to ride those.))

My next rims will be tubular. I'm going back because I never again want to blow a tire and have it come off. Not in this lifetime. And I don't want to to even be a possibility going downhill at better than 45. (Blew tubulars at least once at those speeds many years ago. Enough of a non-event that I don't even remember if it was front or rear.)

Ben
79pmooney is offline  
Likes For 79pmooney:
Old 04-13-20, 07:59 AM
  #6  
Tomm Willians
Senior Member
Thread Starter
 
Tomm Willians's Avatar
 
Join Date: Mar 2020
Location: Nevada County, California
Posts: 605

Bikes: Subject to change at any given moment but currently is...... Colnago Mapei, Colnago C40, Wilier Triestina Carbon, Wilier Triestina Ramato, Follis 472, Peugeot PX60, Razesa, Orbea Terra, Soma Pescadero and 1/2 owner of a Santana tandem.

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 250 Post(s)
Liked 589 Times in 190 Posts
Originally Posted by speedevil View Post
The makers of Effetto Mariposa Caronga tape say that the rim should be completely clean for the best bond between the tire and the rim. Other makers may have different recommendations, but tape will always stick best on a smooth and clean surface.

A new layer of glue will soften the old glue, but the adhesive in the tape won't do that, or at least not nearly as well.

If you intend to use tape I would recommend that you clean the old glue off, I would avoid using a wire brush to remove the old glue. I had very good results using the Effetto rim cleaner - you could not tell that a tubular had ever been glued on the rim.
I just ordered the cleaner, Acetone works too slow for me.
Tomm Willians is offline  
Old 04-13-20, 09:48 AM
  #7  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,782

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1884 Post(s)
Liked 657 Times in 385 Posts
Acetone, an old dull screwdriver and a stiff wire brush. There is no shortcut.
trailangel is offline  
Likes For trailangel:
Old 04-13-20, 12:05 PM
  #8  
squirtdad
Senior Member
 
squirtdad's Avatar
 
Join Date: Jul 2006
Location: San Jose (Willow Glen) Ca
Posts: 8,641

Bikes: 85 team Miyata (modern 5800 105) , '84 Team Miyata,(dura ace old school) 80?? SR Semi-Pro 600 Arabesque

Mentioned: 91 Post(s)
Tagged: 0 Thread(s)
Quoted: 1779 Post(s)
Liked 1,470 Times in 893 Posts
brass brush on a drill fast and safe
__________________
Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light 56,57 or so)

squirtdad is offline  
Old 04-13-20, 01:52 PM
  #9  
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Posts: 23,740

Bikes: Several, mostly not name brands.

Mentioned: 142 Post(s)
Tagged: 0 Thread(s)
Quoted: 3040 Post(s)
Liked 2,167 Times in 1,293 Posts
Originally Posted by trailangel View Post
Acetone, an old dull screwdriver and a stiff wire brush. There is no shortcut.
A wire wheel mounted on a bench grinder makes quick work of it. Less than a minute per wheel; no nasty solvents, no tiresome scraping.





N.B. wear face & eye protection. Not recommended for carbon fiber rims.
JohnDThompson is offline  
Old 04-13-20, 07:46 PM
  #10  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,782

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1884 Post(s)
Liked 657 Times in 385 Posts
^^ That looks good. I try not to use power tools if I don't have too.....might take it too far.
trailangel is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.