Go Back  Bike Forums > Bike Forums > Cyclocross and Gravelbiking (Recreational)
Reload this Page >

Flat mount to post mount adapter - opinions?

Notices
Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like : "Unbound Gravel". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Flat mount to post mount adapter - opinions?

Old 02-12-21, 05:00 PM
  #1  
996
Senior Member
Thread Starter
 
Join Date: Mar 2013
Posts: 151
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 89 Post(s)
Liked 5 Times in 5 Posts
Flat mount to post mount adapter - opinions?

Hi - building up a bike that has flat mount brakes, but a post mount fork. I have seen adapters around that will allow a flat mount brake caliper to be mounted on a post mount fork. Has anyone used one of these? Any safety or reliability issues to be worried about?

On the contrary... is it possible to fit a post mount brake caliper on a flat mount frame?

Any input would be greatly appreciated. Thanks!
996 is offline  
Old 02-12-21, 07:42 PM
  #2  
Russ Roth
Senior Member
 
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 1,866

Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 683 Post(s)
Liked 529 Times in 403 Posts
I've got two bikes that came stock is a post mount adapter for a flat mount frame and another for the flat mount fork. Both have worked just fine with no complaints. The only flat to post mount is made in canada but ships fairly quickly. reasonably painless to use.
Russ Roth is online now  
Old 02-12-21, 08:46 PM
  #3  
996
Senior Member
Thread Starter
 
Join Date: Mar 2013
Posts: 151
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 89 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by Russ Roth View Post
I've got two bikes that came stock is a post mount adapter for a flat mount frame and another for the flat mount fork. Both have worked just fine with no complaints. The only flat to post mount is made in canada but ships fairly quickly. reasonably painless to use.
OK thanks. I saw this. Flat mount frame to post mount caliper... might just do this.

https://www.worldwidecyclery.com/pro...wo-32-mm-bolts
996 is offline  
Old 02-12-21, 08:50 PM
  #4  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 22,232
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 1,818 Times in 1,296 Posts
the problem with a chain stay mounted flat mount caliper is that putting a post mount caliper on it might not work due to the seat stays. And also, bike manufacturers do a poor job of making the flat mounts flat, so you might have issues because the post mount adapter moves it out of range of adjustment.
unterhausen is offline  
Old 02-12-21, 09:40 PM
  #5  
dwmckee
Senior Member
 
dwmckee's Avatar
 
Join Date: Jun 2008
Location: Pittsburgh, PA
Posts: 2,307

Bikes: Co-Motion Cappuccino Tandem,'88 Bob Jackson Touring, Co-Motion Cascadia Touring, Open U.P., Ritchie Titanium Breakaway, Frances Cycles SmallHaul cargo bike. Those are the permanent ones; others wander in and out of the stable occasionally as well.

Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
Likes: 0
Liked 251 Times in 168 Posts
We have converted both ways without any problems, but you could have clearance problems on some bikes with some calipers as Unterhausen mentioned.
dwmckee 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.