Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

Putting discs on a bike

Old 07-11-05, 06:03 PM
  #1  
willmac
Member
Thread Starter
 
Join Date: Apr 2003
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Putting discs on a bike

I'm looking to get disc brakes on my 03 garyfisher big sur. It obviously is the big sur w/o the discs. What all do I need, because I know I need more than just the discs
willmac is offline  
Old 07-11-05, 06:18 PM
  #2  
never
Custom User
 
never's Avatar
 
Join Date: Jul 2005
Location: T0L0K0
Posts: 3,739
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Hubs (or just a new wheelset), calipers, rotors, discs, pads and longer cables.
never is offline  
Old 07-11-05, 06:18 PM
  #3  
mx_599
Lost in the Black Hills
 
mx_599's Avatar
 
Join Date: May 2005
Posts: 5,725
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by willmac
I'm looking to get disc brakes on my 03 garyfisher big sur. It obviously is the big sur w/o the discs. What all do I need, because I know I need more than just the discs
disc specific hubs (have flanges)

caliper mounting capabilities on fork/frame

...that's about it!
mx_599 is offline  
Old 07-11-05, 06:23 PM
  #4  
chis51hd
Senior Member
 
chis51hd's Avatar
 
Join Date: Jun 2005
Location: Davao City, Philippines
Posts: 182
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by mx_599
disc specific hubs (have flanges)

caliper mounting capabilities on fork/frame

...that's about it!

what do those flanges look like? sorry, I'm not familiar with disk brakes...
chis51hd is offline  
Old 07-11-05, 06:25 PM
  #5  
ckleps
Senior Member
 
Join Date: Jan 2005
Location: Chicago
Posts: 516

Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by willmac
I'm looking to get disc brakes on my 03 garyfisher big sur. It obviously is the big sur w/o the discs. What all do I need, because I know I need more than just the discs

everything above, plus since you have a fisher you need to get a disc brake kit, your dealer will have to order it for you. Many forum members have this wheelset and its served them well so you might want to look at it since you need new hubs. http://www.pricepoint.com/detail/120...-Lite-Rims.htm
These are 6 bolt hubs, which I think all brands use except for shimano, correct me if I'm wrong.
Shimano has a proprietary system to affix the discs to the hubs.
ckleps is offline  
Old 07-11-05, 11:53 PM
  #6  
Raiyn
I drink your MILKSHAKE
 
Raiyn's Avatar
 
Join Date: Jul 2002
Location: St. Petersburg, FL
Posts: 15,061

Bikes: 2003 Specialized Rockhopper FSR Comp, 1999 Specialized Hardrock Comp FS, 1971 Schwinn Varsity

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by ckleps
These are 6 bolt hubs, which I think all brands use except for shimano, correct me if I'm wrong.
Shimano has a proprietary system to affix the discs to the hubs.
Shimano still has both out there and not all brands used the ISO 6 bolt standard (remember Coda 4 bolts and Rock Shox 3 bolt systems?)
__________________
Raiyn is offline  
Old 07-13-05, 09:47 AM
  #7  
willmac
Member
Thread Starter
 
Join Date: Apr 2003
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
About how much longer will the pads last compared to regular pads
willmac is offline  
Old 07-13-05, 10:18 AM
  #8  
LowCel 
Throw the stick!!!!
 
LowCel's Avatar
 
Join Date: Apr 2003
Location: Charleston, WV
Posts: 18,087

Bikes: GMC Denali

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked 7 Times in 4 Posts
It will all depend on your riding style. My last set of disc pads lasted about 1 1/2 months. My set before that lasted about 8 months. I'm riding much more aggressive now though and a lot of the riding has been in poor conditions.

Keep in mind that pads usually cost around $25 a set (so $50 for front and back).
__________________
I may be fat but I'm slow enough to make up for it.
LowCel is offline  
Old 07-13-05, 10:21 AM
  #9  
willmac
Member
Thread Starter
 
Join Date: Apr 2003
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
How often are you supposed to change your regular pads.
willmac is offline  
Old 07-13-05, 10:26 AM
  #10  
never
Custom User
 
never's Avatar
 
Join Date: Jul 2005
Location: T0L0K0
Posts: 3,739
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Again, that will depend. It was extremely wet around here last month and I was riding every day through streams, muck and mud. I had new pads on the bike (regular V-brake) and they only lasted a few weeks. Other pads have lasted a few months.

There isn't any time interval on when you are supposed to change pads...just change them when they are almost worn out. The time interval will depend on how you ride, weather conditions (pads generally wear faster when wet), and how often you ride.
never is offline  
Old 07-13-05, 10:27 AM
  #11  
LowCel 
Throw the stick!!!!
 
LowCel's Avatar
 
Join Date: Apr 2003
Location: Charleston, WV
Posts: 18,087

Bikes: GMC Denali

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked 7 Times in 4 Posts
Whenever they are worn down about 1/2 way is a good time to replace them.
__________________
I may be fat but I'm slow enough to make up for it.
LowCel is offline  
Old 07-13-05, 09:24 PM
  #12  
willmac
Member
Thread Starter
 
Join Date: Apr 2003
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
What I'm trying to ask is, will discs pads last a lot longer than regular pads?
willmac is offline  
Old 07-13-05, 10:21 PM
  #13  
Raiyn
I drink your MILKSHAKE
 
Raiyn's Avatar
 
Join Date: Jul 2002
Location: St. Petersburg, FL
Posts: 15,061

Bikes: 2003 Specialized Rockhopper FSR Comp, 1999 Specialized Hardrock Comp FS, 1971 Schwinn Varsity

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by willmac
What I'm trying to ask is, will discs pads last a lot longer than regular pads?
Depends on which ones you get
__________________
Raiyn is offline  
Old 07-14-05, 12:58 PM
  #14  
willmac
Member
Thread Starter
 
Join Date: Apr 2003
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
So what are the advantages of discs
willmac is offline  
Old 07-14-05, 01:19 PM
  #15  
Drunken Chicken
Senior Member
 
Drunken Chicken's Avatar
 
Join Date: Feb 2005
Location: Spain, although I'm Hungarian
Posts: 1,855

Bikes: Check signature

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by willmac
So what are the advantages of discs
They have more power and modulation than v-brakes and have much better stopping power than the v-brakes in wet and muddy conditions.
Drunken Chicken is offline  
Old 07-14-05, 07:43 PM
  #16  
myenzo
Senior Member
 
Join Date: Jan 2005
Location: Fort Collins, Colorado
Posts: 199

Bikes: 2004 Giant Iguana 2005 Specialized Enduro SX Trail

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Down side is that if you do very aggressive riding six inch discs will overheat very quickly
myenzo is offline  
Old 07-15-05, 12:58 AM
  #17  
Raiyn
I drink your MILKSHAKE
 
Raiyn's Avatar
 
Join Date: Jul 2002
Location: St. Petersburg, FL
Posts: 15,061

Bikes: 2003 Specialized Rockhopper FSR Comp, 1999 Specialized Hardrock Comp FS, 1971 Schwinn Varsity

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by myenzo
Down side is that if you do very aggressive riding six inch discs will overheat very quickly
Not always the case. Besides it's hard to develop flow if you're jamming on the brakes every ten seconds. Unless you're downhilling or doing some really extreme FR 6" rotors will be plenty for most of us here
__________________
Raiyn is offline  
Old 07-15-05, 03:49 AM
  #18  
Roasted
huffy owns
 
Join Date: Apr 2005
Location: Pennsylvania.
Posts: 572

Bikes: Catrike Expedition, KHS XC 204 mountain bike, Nashbar SS Road Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Worst case scenario, what if I overheat the disc brakes? Will I just warp the rotor, kind of like you would in a vehicle if you do 90 mph and floor the brake?
Roasted is offline  
Old 07-15-05, 04:43 AM
  #19  
Brian
Senior Member
 
Brian's Avatar
 
Join Date: Nov 2004
Location: Between the mountains and the lake.
Posts: 16,681

Bikes: 8 bikes - one for each day of the week!

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
No. They'll simply become ineffective. Braking is the dissipation of energy, which causes the energy to be released as heat. When your rotors are too hot, they will no longer be able to dissipate energy, therefore they won't work very well, or not at all. Worst case, the hydraulic fluid could boil, and plastic parts on the caliper could melt. The boiling isn't an issue with cable operated discs. It's unlikely you can generate that much heat.
Brian is offline  
Old 07-15-05, 05:49 AM
  #20  
LowCel 
Throw the stick!!!!
 
LowCel's Avatar
 
Join Date: Apr 2003
Location: Charleston, WV
Posts: 18,087

Bikes: GMC Denali

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked 7 Times in 4 Posts
Originally Posted by Expatriate
No. They'll simply become ineffective. Braking is the dissipation of energy, which causes the energy to be released as heat. When your rotors are too hot, they will no longer be able to dissipate energy, therefore they won't work very well, or not at all. Worst case, the hydraulic fluid could boil, and plastic parts on the caliper could melt. The boiling isn't an issue with cable operated discs. It's unlikely you can generate that much heat.

In order to do the above you are going to have to really be moving though. I have been running disc brakes for a while and have only had a couple of very minor cases of brake fade. Unless you are riding true downhill courses you should be fine with 6" rotors. I have done some very technical 6 mile xc downhills and never had a problem. These were not true "downhills" though.
__________________
I may be fat but I'm slow enough to make up for it.
LowCel is offline  
Old 07-15-05, 06:02 AM
  #21  
Brian
Senior Member
 
Brian's Avatar
 
Join Date: Nov 2004
Location: Between the mountains and the lake.
Posts: 16,681

Bikes: 8 bikes - one for each day of the week!

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by LowCel
In order to do the above you are going to have to really be moving though. I have been running disc brakes for a while and have only had a couple of very minor cases of brake fade. Unless you are riding true downhill courses you should be fine with 6" rotors. I have done some very technical 6 mile xc downhills and never had a problem. These were not true "downhills" though.
I was only answering his question. I think it's unlikely that the average single rider can cook disc brakes to the point they don't work. I'm told by the owner of a tandem recumbent trike that his brakes glowed red hot after slowing from 96km/h. But they still slowed him down. We run 8 inch discs on our tandem, and they're nearly fade-proof. My only concern about swapping to Magura hydraulics is that the rotors are slightly smaller. Even then, they should hold up fine. Anyone that overheats 6 inch discs on a regular basis needs to look at either their style, or the terrain, as it shouldn't ever really be a problem.
Brian is offline  
Old 07-15-05, 06:20 AM
  #22  
LowCel 
Throw the stick!!!!
 
LowCel's Avatar
 
Join Date: Apr 2003
Location: Charleston, WV
Posts: 18,087

Bikes: GMC Denali

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked 7 Times in 4 Posts
Oops, wasn't actually trying to correct you, just adding to it. Sometimes hard to tell these things on a forum.
__________________
I may be fat but I'm slow enough to make up for it.
LowCel is offline  
Old 07-15-05, 06:22 AM
  #23  
LowCel 
Throw the stick!!!!
 
LowCel's Avatar
 
Join Date: Apr 2003
Location: Charleston, WV
Posts: 18,087

Bikes: GMC Denali

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked 7 Times in 4 Posts
Exatriate - you might be interested in this as well.
__________________
I may be fat but I'm slow enough to make up for it.
LowCel is offline  
Old 07-15-05, 06:39 AM
  #24  
Brian
Senior Member
 
Brian's Avatar
 
Join Date: Nov 2004
Location: Between the mountains and the lake.
Posts: 16,681

Bikes: 8 bikes - one for each day of the week!

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
It's all good. I really want the Magura brakes to work with my XT rotors. I've never been a big fan of warranties anyway...
Brian is offline  
Old 07-15-05, 06:41 AM
  #25  
LowCel 
Throw the stick!!!!
 
LowCel's Avatar
 
Join Date: Apr 2003
Location: Charleston, WV
Posts: 18,087

Bikes: GMC Denali

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked 7 Times in 4 Posts
Most of the time getting products warranteed (sp?) is more trouble than it is worth anyway, especially when dealing with companies as large as Shimano. Hugi on the other hand, I can't get over how great their customer service is! (Slightly off topic but I give them credit whenever I can.)
__________________
I may be fat but I'm slow enough to make up for it.
LowCel is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

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