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 02-25-11, 11:38 AM   #1
Ithaka
rawr
Thread Starter
 
Ithaka's Avatar
 
Join Date: Apr 2008
Location: PDX
Bikes: Kilo TT tarck bike
Posts: 39
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cross levers w/ canti's + replacing a tube

Two quickies:

-Can cross levers work effectively with center-pull cantilever brakes? I believe my LBS said something about them feeling mushy (or maybe it was cross levers with V-brakes?)

-When you replace a flat, do you leave one side of the tire on the wheel, then slide the semi-inflated tube up into the tire, or do you take the entire tire off and work one side of the bead on? It took me 2 hours last night to get my tire to seat properly...
Ithaka is offline   Reply With Quote
Old 02-25-11, 11:46 AM   #2
corkscrew
Senior Member
 
Join Date: Mar 2009
Location: Boise, ID.
Bikes:
Posts: 1,252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have cane creek cross levers on my T700. They worked GREAT when I had canti's installed.

When I went to new v-levers and v-brakes, not so much, the brake levers work great, but the cross levers bottom out before they are truly effective. I'll be removing them once a new roll of brake housing comes in the mail. So yeah, you should be fine with cantis.

On tubes, I lever off one half of the tire and poke the tube in there. Makes re-seating the one bead easier. Also when re-inflating you can work the tire back and forth with your hands - will aid in the one side seating properly.
corkscrew is offline   Reply With Quote
Old 02-25-11, 11:53 AM   #3
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 30,003
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 381 Post(s)
I've done it both ways. On mtn wheels and some road wheels with deep center wells I remove the entire tire, switch tubes, and remount. On tighter fitting tire/rim combinations I work from one side only. Another consideration is whether you know the cause, because it's easier tom inspect with the tire off the rim.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 02-25-11, 12:05 PM   #4
Ithaka
rawr
Thread Starter
 
Ithaka's Avatar
 
Join Date: Apr 2008
Location: PDX
Bikes: Kilo TT tarck bike
Posts: 39
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Okay, thanks for the quick responses.

I think I finally had more success in leaving one side of the tire on, then wedging the tube up in there.

Gonna head off to the LBS to get some new brakes on my Lotus to finally get him back on the road!
Ithaka is offline   Reply With Quote
Old 02-25-11, 01:17 PM   #5
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 20,462
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 662 Post(s)
The Aero lever on the end of the cable and the cross lever in the middle pull different amounts of cable.

so adjusting them at the cantilever caliper is a compromise,

between the actuation feel within the travel arc, of the 2 levers,

and the movement distance of the brake pad to the rim.
fietsbob is offline   Reply With Quote
Old 02-25-11, 01:31 PM   #6
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)
I always remove the tire completely from the rim when I repair a flat as it's the only way to inspect the inside adequately to find what caused the flat in the first place. I'm sure everyone has seen someone do this or done it themselves; you rush to repair the flat by yanking out the old tube, stuff in a new one and inflate it only to have another flat a few hudred yards further along because what caused the first flat is still in the tire.

When I reinstall the tire, I do fit one bead over the rim, then stuff in the lightly inflated tube and finally seat the second bead. Pinch the beads together and check all around the wheel on both sides to be sure the tube is completely inside the tire before you inflate it.
HillRider is offline   Reply With Quote
Old 02-25-11, 01:42 PM   #7
ryker
Slow mechanic
 
ryker's Avatar
 
Join Date: Jun 2007
Location: Calgary
Bikes:
Posts: 237
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
No argument with any of the advice above.

But if it is taking 2 hours to fit a tire, I would be inclined to inspect your components for damage. If you have damage to the tire bead, it can be very difficult to get the tire to stay put. In this case you are also at risk of having the tire come off the rim while riding.
ryker is offline   Reply With Quote
Old 02-25-11, 05:39 PM   #8
Andy_K 
Senior Member
 
Andy_K's Avatar
 
Join Date: Jan 2008
Location: Beaverton, OR
Bikes: 2013 Kona Jake, 2015 Kona Jake the Snake, 2008 Kona Major Jake, 2013 Kona Jake the Snake, 2006 Kona Kula, 2012 Ridley Excalibur, 2001 LeMond Buenos Aires, 1984 Pinarello Gran Turismo, 1982 Trek 614, 1978 Austro-Daimler, 1987 Pinarello Montello
Posts: 8,932
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 220 Post(s)
I like cross levers with canti brakes. I also have cross levers installed on one bike with a V-brake with Travel Agent in front, and that works pretty well too.
Andy_K is offline   Reply With Quote
Old 02-25-11, 10:49 PM   #9
Standalone 
babylon by bike
 
Standalone's Avatar
 
Join Date: Dec 2007
Location: New Haven, CT, USA
Bikes: Road, Cargo, Tandem, Etc.
Posts: 3,109
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
was just reading Sheldon Brown's site and he thought that "mushiness" was important to a good high mechanical advantage brake like the cantilever. He explains it better than I can, so I'll leave it to you to read.

But more simply, aren't cross levers pretty much designed for cantis?
__________________
The bicycle, the bicycle surely, should always be the vehicle of novelists and poets. Christopher Morley
Standalone is offline   Reply With Quote
Old 02-26-11, 02:42 AM   #10
Greyryder
Powerful-Ugly Creature
 
Greyryder's Avatar
 
Join Date: Dec 2009
Bikes:
Posts: 570
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Standalone View Post
was just reading Sheldon Brown's site and he thought that "mushiness" was important to a good high mechanical advantage brake like the cantilever. He explains it better than I can, so I'll leave it to you to read.

But more simply, aren't cross levers pretty much designed for cantis?
They can be too mushy. I used a short pull lever with a V brake, once. It was so mushy, that the wheel would be completely locked up, well before I could feel any resistance in the lever. I had to feel for what the bike was doing. The one fingered braking was nice, though.
Greyryder is offline   Reply With Quote
Old 02-28-11, 03:16 AM   #11
Ithaka
rawr
Thread Starter
 
Ithaka's Avatar
 
Join Date: Apr 2008
Location: PDX
Bikes: Kilo TT tarck bike
Posts: 39
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sort of unrelated, but it ends up my brakes are a specifically weird setup. The cable that hangs down has two little knobs on the end, that then engage a semi-circle loop on the brake itself. The cable that hangs down is too long, so my LBS ordered some part that shortens the cable after a little adjusting. Once that hassle is taken care of, they are going to install the new cable/housing, Tektro cross-levers, and some black bar tape.

Last upgrades are those MKS Sylvans and a black saddle. Then I'll be done
Ithaka 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 08:01 PM.