Go Back  Bike Forums > Bike Forums > Commuting
Reload this Page >

disc brake conversion...

Commuting Bicycle commuting is easier than you think, before you know it, you'll be hooked. Learn the tips, hints, equipment, safety requirements for safely riding your bike to work.

disc brake conversion...

Old 10-29-14, 07:55 AM
  #1  
e0richt
Senior Member
Thread Starter
 
Join Date: Nov 2006
Location: Hammonton, NJ
Posts: 998

Bikes: Dawes Lightning sport, Trek 1220, Trek 7100

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
disc brake conversion...

has anyone tried a disc brake conversion kit for a road bike?
was it worth it? problems?
e0richt is offline  
Old 10-29-14, 09:09 AM
  #2  
DVC45
Senior Member
 
DVC45's Avatar
 
Join Date: Dec 2006
Posts: 3,867
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 3 Times in 2 Posts
I'm sure its more trouble than its worth.
DVC45 is offline  
Old 10-29-14, 09:27 AM
  #3  
modernjess
ride for a change
 
modernjess's Avatar
 
Join Date: Nov 2006
Location: Minneapolis, MN
Posts: 2,221

Bikes: Surly Cross-check & Moonlander, Pivot Mach 429, Ted Wojcik Sof-Trac, Ridley Orion. Santa Cruz Stigmata

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by DVC45 View Post
I'm sure its more trouble than its worth.
+1 That's my first thought as well. The bigger question is why? Are your brakes not working in your conditions? If you already have disc compatible hubs, fork and frame and your brake levers are compatible, then it's a pretty simple but not necessarily cheap "upgrade". If you dont have those things already then you are into lot more money.

I'm a big believer and rider of discs off road, but on the road I don't see it as being worth a swap. That said I would buy a new (or used) road or cross bike that came with disc brakes, but it would not be because it had disc brakes. That is pretty low on my priority list for road biking.

So is it worth it? Only you can do that value comparison. For me for a road bike? Not a chance.
modernjess is offline  
Old 10-29-14, 09:38 AM
  #4  
jimc101
Senior Member
 
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 5,421
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 281 Post(s)
Likes: 0
Liked 1 Time in 1 Post
A lot of work needed when starting with a road bike, new fork, wheels, calipers, and cables, frame needs welding and re-spacing and possibly new hose guides fitting, by the time you have done everything, you may as well have just bought a disc read frame in the first place.
jimc101 is offline  
Old 10-29-14, 10:31 AM
  #5  
DVC45
Senior Member
 
DVC45's Avatar
 
Join Date: Dec 2006
Posts: 3,867
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 3 Times in 2 Posts
Cost is one thing, but frame and fork failures (brake attachments) and facial surgeries are more of a concern.
DVC45 is offline  
Old 10-29-14, 12:21 PM
  #6  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 40,920

Bikes: 8

Mentioned: 182 Post(s)
Tagged: 0 Thread(s)
Quoted: 6557 Post(s)
Likes: 0
Liked 64 Times in 57 Posts
If the Fittings are not on the frame and fork the kit is your BankCard to buy another Bike

calipers discs and wheels add up quick , a modest priced bike somewhat Identical in All other ways

the disc version would add the cost of less than just buying new wheels for the Disc Hubs.

Summary : Why not just go shopping for a New Bike . for the disc feature ?



I have 2 bikes both can use rim or disc brakes,, 1 came wit Maguras hydraulic rim brakes, they work so well I have no reason to replace them.

& a Bike Friday it came with BB7 discs , but has V Brake posts too . original order probably wanted a backup option.

Last edited by fietsbob; 10-29-14 at 02:41 PM.
fietsbob is offline  
Old 10-29-14, 12:36 PM
  #7  
ratell
Senior Member
 
ratell's Avatar
 
Join Date: Mar 2008
Location: Portland, OR
Posts: 360
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
My bike needed new wheels, so I took the opportunity to get a new fork and put a disc brake on the front. Even doing that was more because I'm attached to my bike. From a purely rational viewpoint I would have been better off selling my bike and buying a new one with disc brakes.
ratell is offline  
Old 10-29-14, 12:38 PM
  #8  
dagray 
Senior Member
 
dagray's Avatar
 
Join Date: Apr 2014
Location: Boardman, Oregon, USA
Posts: 1,534

Bikes: Orbea Orca, Raleigh Revenio 2.0, Raleigh Talus 29er, Centurion Le Mans 12 speed

Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 104 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
For me I have a 1985 Centurion LeMans 12 speed that eventually I will need to convert to 700cm rims due to tire selection. This means I either try to find different caliper brakes, or go disk. Going disk intrigues me.

I have a newer road bike that I ride with caliper brakes and a newer 29er mountain bike that has the disk brakes.
dagray is offline  
Old 10-29-14, 01:22 PM
  #9  
ratell
Senior Member
 
ratell's Avatar
 
Join Date: Mar 2008
Location: Portland, OR
Posts: 360
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Look at the math:

Therapy components conversion package with the converter, two wheels fork and two brakes cost $809.00
Therapy Components

Now on clearance you can get a Novara Zealo with disc brakes for $598 which is crazy I admit. A more normal price would be around $1200 for a solid road bike with discs. Basically for $400 more than the conversion you can have a brand new bike.

If you factor in a a few hundred for selling your old bike you are talking about the same price or possibly cheaper to get a new bike.
ratell is offline  
Old 10-29-14, 01:59 PM
  #10  
Andy_K 
Senior Member
 
Andy_K's Avatar
 
Join Date: Jan 2008
Location: Beaverton, OR
Posts: 12,018

Bikes: Yes

Mentioned: 273 Post(s)
Tagged: 0 Thread(s)
Quoted: 1725 Post(s)
Liked 7 Times in 6 Posts
Originally Posted by ratell View Post
My bike needed new wheels, so I took the opportunity to get a new fork and put a disc brake on the front.
I did that too with my 2008 Kona Jake. I already had road BB7 brakes and a disc wheel set sitting unused in my garage, so for me it was just the cost of the fork (~$100). That was easily worth the cost. If you didn't have the wheel and brake, you could still probably do the front conversion for under $300 if your bike will take a CX length fork (~395mm), though at that cost it's probably only worthwhile if you are really attached to your bike.

Many road bikes will have the additional problem that the only disc forks available in typical road lengths (~370mm) are high end carbon models in the $500+ price range.

So, yeah, probably not worth it.
__________________
My Bikes
Andy_K is offline  
Old 10-29-14, 02:35 PM
  #11  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 9,289

Bikes: '76 Paramount, Salsa Timberjack, Burley Samba, Terra Trike

Mentioned: 56 Post(s)
Tagged: 0 Thread(s)
Quoted: 1390 Post(s)
Liked 25 Times in 19 Posts
I decided a little while back that it's almost never worth the effort to turn a bike into something it isn't. To convert a bike from whatever it was to a disk requires new wheels, calipers and rotors at a minimum. You may or may not have a convertible fork. On a road bike, probably not. At the rear you really ought to have a frame that's made for it. If the bike didn't come with this stuff to begin with then you're probably lipsticking the pig.

Example: My Hardrock came with V brakes. It has a disk boss on the rear frame but not on the cheapass fork. If I'm going to buy it a fork I'd like to have one with some actual damping (ching!) and then I'll need disk wheels (ching!) and calipers and rotors (ching!). The whole bike cost like $350 new, and it's 12 years old and has lots of plastic components that are showing their age. And then I'll have updated it to 26" wheels with cable disks when its new counterpart has 29er wheels and hydraulic disks.
__________________
Genesis 49:16-17
Darth Lefty is offline  
Old 10-29-14, 04:08 PM
  #12  
dynaryder
PatronSaintOfDiscBrakes
 
dynaryder's Avatar
 
Join Date: Apr 2005
Location: BicycleSPACE warehouse in SW Washington DC
Posts: 6,980
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Conversion kits are kludge,and I don't think they make them for frames without canti bosses.

Front disc only is doable with a fork swap,but in most cases you're better off just getting a different bike.
__________________

C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X
dynaryder is offline  
Old 10-30-14, 01:23 PM
  #13  
Mr IGH
afraid of whales
 
Mr IGH's Avatar
 
Join Date: Apr 2009
Location: Front Range, CO
Posts: 4,322
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 346 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by e0richt View Post
has anyone tried a disc brake conversion kit for a road bike?
was it worth it? problems?
Not worth it. If you want to get away from rim brakes on an old frame you like, consider drum brakes:
Mr IGH is offline  
Old 10-30-14, 03:27 PM
  #14  
dkmatdrum
Senior Member
 
Join Date: Jan 2008
Posts: 78
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have an old Schwinn Passage which I had already converted to Ultegra Brifters and a quill to threadless stem converter so I could swap handlebars easily. I changed the cantilever brakes to Tektro 539 caliper brakes to match up to the lever pull ratio of the Ultegra brifters. It stopped ok in the dry but only marginally in the rain even with Kool Stop pads.
After scaring myself one too many times in the rain I switched the front fork to a Nashbar carbon disc version ($129 on sale with an additional 20% off), a TRP Spyre brakeset ($60 on Ebay) and a wheelset from Velomine ($239 for front and rear with Velocity Blunt rims and Shimano XT hubs) and a Cane Creek threadless #40 headset for $48.
I did all the conversion myself. I did not change the rear wheel because I did not want to respace the dropouts.
These brakes work perfectly with the Ultegra levers and make stopping with 2 fingers from the hoods a piece of cake. All the pieces will work on my next bike a Gunnar which will have rear disc brakes as well
dkmatdrum 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

Copyright İ 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.