Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

rear rack mounting question

Notices
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.

rear rack mounting question

Old 06-25-12, 09:24 AM
  #1  
motorapido
Senior Member
Thread Starter
 
Join Date: Jun 2012
Location: harrisburg, pennsylvania
Posts: 351

Bikes: 1976 Schwinn Super Le Tour, tricked out with modern components. Shimano Alfine 11 internal gear hub. Dynamo hub. Titanium racks and bottle cages. Mercier Kilo Wide Tire dropbar singlespeed

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 44 Post(s)
Liked 8 Times in 1 Post
rear rack mounting question

I need to mount a rear rack on a 1970s chrome-moly sports touring frame that has fender eyelets on the frame but no braze-ons by the seat tube to accept the top/front connection of most standard rear racks that I am considering buying. I'm converting this bike from its former setup as a light, skinny-tire race setup to wider tires and a touring configuration, recognizing that as my 50th birthday comes in less than a year, I'm done with the whole flat-back boy-racer thing and ready for some leisurely overnight tours. I've never installed a rear rack before so I am ignorant of the process.

I am considering the Nashbar waterproof panniers and would like to mount them on a good sturdy rack. I see seatpost racks as an option, but I'm wondering if I'm missing something about how to attach a more traditional rack to a bike frame that has fender eyelets but no other braze-ons up top for rack mounting. Please help cure me of my ignorance by sharing what you can. Thanks.
motorapido is offline  
Old 06-25-12, 09:35 AM
  #2  
oddjob2
Still learning
 
oddjob2's Avatar
 
Join Date: May 2012
Location: North of Canada, Adirondacks
Posts: 11,620

Bikes: Still a garage full

Mentioned: 92 Post(s)
Tagged: 2 Thread(s)
Quoted: 846 Post(s)
Liked 62 Times in 40 Posts
The older style racks have clamps which fit around the seat stays and may also have a T bracket that is bolted to the brake bridge.

https://www.bikemanforu.com/products/...tay-Forks.html
oddjob2 is offline  
Old 06-25-12, 09:45 AM
  #3  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,228

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1407 Post(s)
Liked 976 Times in 666 Posts
So-called "P-clamps" are useful for such a situation. A Google search will yield pictures, your local hardware or homeowner's store should have them on the plumbing or electrical section. Regarding the weight of your panniers, the attachments to the seat stays are mostly to keep the rack from rotating back and forth, the majority of the weight stresses are absorbed by the attachments to the fender eyelets at the bottom. I'd stay away from the seat post-type racks.
dsbrantjr is offline  
Old 06-25-12, 10:18 AM
  #4  
redcon1
Senior Member
 
redcon1's Avatar
 
Join Date: Aug 2008
Location: South Central PA
Posts: 518

Bikes: Gary Fisher X-Caliber, Focus Arriba, Specialized Roubaix Expert

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 72 Times in 47 Posts
FOr my wife's frame I went with a seatpost clamp with build-in rack mounts. Salsa makes a nice line, as well as others like here:

https://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1541

Attached Images
File Type: jpg
040609029.JPG (44.6 KB, 3 views)
redcon1 is offline  
Old 06-25-12, 11:03 AM
  #5  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,228

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1407 Post(s)
Liked 976 Times in 666 Posts
Originally Posted by redcon1 View Post
FOr my wife's frame I went with a seatpost clamp with build-in rack mounts. Salsa makes a nice line, as well as others like here:

https://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1541

I have used the seat post clamps you mention, and like them, but the OP has a '70s vintage bike which likely has "ears" on the seat tube and would not be compatible with them.
dsbrantjr is offline  
Old 06-25-12, 11:29 AM
  #6  
redcon1
Senior Member
 
redcon1's Avatar
 
Join Date: Aug 2008
Location: South Central PA
Posts: 518

Bikes: Gary Fisher X-Caliber, Focus Arriba, Specialized Roubaix Expert

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 72 Times in 47 Posts
Originally Posted by dsbrantjr View Post
I have used the seat post clamps you mention, and like them, but the OP has a '70s vintage bike which likely has "ears" on the seat tube and would not be compatible with them.

Gotcha.. missed that 70's frame reference. Weren't the seatpost clamp eyelets brazed right into the frame, thus allowing rack mounting with just a longer bolt? It's been too many years to remember!
redcon1 is offline  
Old 06-25-12, 11:50 AM
  #7  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,228

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1407 Post(s)
Liked 976 Times in 666 Posts
It might be possible to use the ears on the frame; the fit might be kind of tight to get the rack brackets tight against the ears without it hitting the tube first.
dsbrantjr is offline  
Old 06-25-12, 12:49 PM
  #8  
TurbineBlade
Kid A
 
TurbineBlade's Avatar
 
Join Date: Aug 2009
Location: Alexandria, VA
Posts: 1,778
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 3 Times in 3 Posts
p-clamps work fine. Honestly, I much prefer a bike that already has braze-ons for this, but you can work around it.

Those seat collars with the braze-ons attached look pretty neat! I've never seen those before, and it's a pretty good idea.
TurbineBlade is offline  
Old 06-25-12, 01:05 PM
  #9  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,330 Times in 838 Posts
The seat stay cross brace typically has a hole in it..
a bolt thru that may also hold the brake on.
the rack mount can share that bolt. too..
fietsbob is offline  
Old 06-25-12, 02:20 PM
  #10  
DCB0
Banned.
 
Join Date: Apr 2011
Posts: 937

Bikes: CCM Torino 76

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by fietsbob View Post
The seat stay cross brace typically has a hole in it..
a bolt thru that may also hold the brake on.
the rack mount can share that bolt. too..
This is how I have the rack mounted on my old road bike. However, not all racks haev holes int he centre of the deck to make this possible. If you have a rack with three sets of holes (one on each side and one in the centre) then it will work. If you have one of the racks that is entirely constructed of tubes with no 'deck' on top then it likely will not work. P-clamps are the answer then.
DCB0 is offline  
Old 06-25-12, 07:30 PM
  #11  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,250

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 1816 Post(s)
Likes: 0
Liked 755 Times in 548 Posts
Originally Posted by DCB0 View Post
This is how I have the rack mounted on my old road bike. However, not all racks haev holes int he centre of the deck to make this possible. If you have a rack with three sets of holes (one on each side and one in the centre) then it will work. If you have one of the racks that is entirely constructed of tubes with no 'deck' on top then it likely will not work. P-clamps are the answer then.
+1 Older Blackburn and Rhode Gear racks had either a center bracket only or the three sets of mounting holes you mention and used a single bracket that shared the rear brake mounting hole in the brake bridge
HillRider is offline  
Old 06-25-12, 11:21 PM
  #12  
Doug64
Senior Member
 
Doug64's Avatar
 
Join Date: Mar 2009
Location: Oregon
Posts: 6,304
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1087 Post(s)
Liked 634 Times in 338 Posts
Doug64 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
timk225
General Cycling Discussion
2
06-12-19 05:30 PM
Zomar
Bicycle Mechanics
26
05-16-19 04:39 PM
felsby
Touring
13
12-20-15 11:41 AM
pierce
Hybrid Bicycles
12
12-12-12 11:10 AM

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.