How do you convert the front fork to disc brakes?
#1
Senior Member
Thread Starter
Join Date: Oct 2006
Posts: 635
Bikes: Soma cyclocross with Bionx PL500HS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
How do you convert the front fork to disc brakes?
My front fork doesn't have tabs for disc brakes but I'd like to convert to disc brakes. i've seen adapters on the internet but I can't see how they'd attach to my fork. do they use the eyelets which I currently use for front fenders?
And can any disc brakes work with any disc brake adapters? Thanks.
And can any disc brakes work with any disc brake adapters? Thanks.
#2
Senior Member
They're usually mounted about 3-4" away from the end of the fork-ends. Typically you'd weld or braze on the disc-brake mounting tabs. Considering they'd be facing 500-600lbs of force under maximum braking, they're slightly beefier than rack eyelets.
#3
META
Join Date: Aug 2005
Location: Madison, WI
Posts: 945
Bikes: Gary Fisher Aquila (retired), Specialized Allez Sport (in parts), Cannondale R500, HP Velotechnic Street Machine, Dented Blue Fixed Gear (retired), Seven Tsunami SSFG, Specialized Stumpjumper Comp Hardtail (alloy version)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 3 Times
in
1 Post
If you link to those adapters we might be able to help better.
My general opinion is not to do that at all.
My general opinion is not to do that at all.
#5
Senior Member
Which brings up the question of why you want disc brakes? Do you ride in some of the extreme conditions where disc brakes has an advantage?
#8
Senior Member
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1074 Post(s)
Liked 295 Times
in
222 Posts
I've seen adapters to go between the different mounting standards (IS and post mount?), I've also seen the occasional fork that didn't have ANY brake fitting permantly attached, so mounting hardware for either rim brake or disc brake had to be assembled by the customer. But I've never seen a bolt-on generic disc brake adapter for forks. (there are som for rears though)
Not very likely. Can't see that one attachment point would be enough.
#9
Senior Member
Swap the fork. There's lots of options out there. I can't imagine something you would use on the fork that would not be kludegy and hell and a maintanence nightmare.
On the rear the adapter brackets are not so bad. But that's if you can find them.
Frankly I'd suggest you just bite the bullet and get a newer disc equipped bike or go disc on the front via a fork swap and leave the rear as rim brakes.
#10
Senior Member
Thread Starter
Join Date: Oct 2006
Posts: 635
Bikes: Soma cyclocross with Bionx PL500HS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I've seen several like these.
https://www.jensonusa.com/store/produ...e+Adapter.aspx
But after looking at them more, it occurred to me that perhaps they're for the rear brakes.
I live in a hilly and wet place as one poster mentioned. I commute all year round and I live off a steep road. My bike is heavier because it has an electric motor (curb weight with all the commuting gadgets is 50 lbs).
sounds like replacing the forks the best idea. It's a lot of work! But I guess it's worth it.
https://www.jensonusa.com/store/produ...e+Adapter.aspx
But after looking at them more, it occurred to me that perhaps they're for the rear brakes.
I live in a hilly and wet place as one poster mentioned. I commute all year round and I live off a steep road. My bike is heavier because it has an electric motor (curb weight with all the commuting gadgets is 50 lbs).
sounds like replacing the forks the best idea. It's a lot of work! But I guess it's worth it.
#11
Senior Member
Thread Starter
Join Date: Oct 2006
Posts: 635
Bikes: Soma cyclocross with Bionx PL500HS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
This looks like a good choice for a replacement fork.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
My only question is if the carbon legs will be strong enough for hard disc braking.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
My only question is if the carbon legs will be strong enough for hard disc braking.
#12
Senior Member
Join Date: Oct 2006
Location: northern Florida, USA
Posts: 778
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Stay away from carbon for a hub motor! I've been using this fork on a bike with an electric hub motor for over 2 years now.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
#13
Senior Member
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1074 Post(s)
Liked 295 Times
in
222 Posts
I've seen several like these.
https://www.jensonusa.com/store/produ...e+Adapter.aspx
But after looking at them more, it occurred to me that perhaps they're for the rear brakes.
https://www.jensonusa.com/store/produ...e+Adapter.aspx
But after looking at them more, it occurred to me that perhaps they're for the rear brakes.
Not really. A straight up fork swap would take me something like 20 minutes, and I'm not the fastest wrench around exactly. Setting up a disc brake - another half hour.
Only you can answer that. But as a rule most people are quite happy with disc brakes.
#14
Senior Member
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1074 Post(s)
Liked 295 Times
in
222 Posts
This looks like a good choice for a replacement fork.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
My only question is if the carbon legs will be strong enough for hard disc braking.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
My only question is if the carbon legs will be strong enough for hard disc braking.
The potential risk I can see is that usually people expect light weight when they're buying CF components, so maybe there's a bit of added incentive from the manufacturer to skimp a little on the material. OTOH it's designed for the job, so it should be up to it.
If you're worried though, you could (assuming your frame takes 1 1/8") look for a rigid fork for a 29er MTB instead. That one should definitely be up to anything you can throw at it.
#15
Senior Member
Thread Starter
Join Date: Oct 2006
Posts: 635
Bikes: Soma cyclocross with Bionx PL500HS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Stay away from carbon for a hub motor! I've been using this fork on a bike with an electric hub motor for over 2 years now.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
#17
Senior Member
This looks like a good choice for a replacement fork.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
My only question is if the carbon legs will be strong enough for hard disc braking.
https://www.nashbar.com/profile.cfm?c...20Road%20Forks
My only question is if the carbon legs will be strong enough for hard disc braking.
My only concern with 29'er forks is that the axle-to-crown distance seems to be longer than a typical road/cross bike fork (e.g. Salsa CroMoto Grande, 468mm a-c, vs 400mm or so for the Winwood). I don't know if that would work well on a road/cross frame though I don't know if you mentioned what kind of bike you have.
Last edited by Metaluna; 06-30-08 at 09:03 AM.
#18
Senior Member
Thread Starter
Join Date: Oct 2006
Posts: 635
Bikes: Soma cyclocross with Bionx PL500HS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I have that fork on my Cross-Check and it is reputed to be nearly identical to the Winwood Muddy. If it is in fact a relabeled Muddy, then it is designed for tandem use in addition to cyclocross, so it should be pretty strong.
My only concern with 29'er forks is that the axle-to-crown distance seems to be longer than a typical road/cross bike fork (e.g. Salsa CroMoto Grande, 468mm a-c, vs 400mm or so for the Winwood). I don't know if that would work well on a road/cross frame though I don't know if you mentioned what kind of bike you have.
My only concern with 29'er forks is that the axle-to-crown distance seems to be longer than a typical road/cross bike fork (e.g. Salsa CroMoto Grande, 468mm a-c, vs 400mm or so for the Winwood). I don't know if that would work well on a road/cross frame though I don't know if you mentioned what kind of bike you have.