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

Rack Dimensions

Search
Notices
Touring Have a dream to ride a bike across your state, across the country, or around the world? Self-contained or fully supported? Trade ideas, adventures, and more in our bicycle touring forum.

Rack Dimensions

Thread Tools
 
Search this Thread
 
Old 12-24-19, 08:47 PM
  #1  
Uber Goober
Thread Starter
 
StephenH's Avatar
 
Join Date: Sep 2007
Location: Dallas area, Texas
Posts: 11,758
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked 41 Times in 32 Posts
Rack Dimensions

I've got a Planet Bike Eco rack laying around, and went to fit it on my Lynskey GR250 gravel bike. Fits okay, but when it's mounted, the trunk bag is right up under the saddle. So a rack with the attachment point farther forward (to shift the rack back) would be advantageous. But, I don't recall ever seeing this as a published dimension. Are all racks the same in this dimension, or is there some rack that would work better here?
I assume the same question would come up in checking heel strike on larger panniers, but I haven't got that far yet.
__________________
"be careful this rando stuff is addictive and dan's the 'pusher'."
StephenH is offline  
Old 12-25-19, 05:13 AM
  #2  
Senior Member
 
indyfabz's Avatar
 
Join Date: Jan 2010
Posts: 39,238
Mentioned: 211 Post(s)
Tagged: 1 Thread(s)
Quoted: 18415 Post(s)
Liked 15,540 Times in 7,329 Posts
Racks come in many shapes a sizes. Preventing heel strike is usually accomplished my positioning the panniers farther back on the rack.
indyfabz is offline  
Old 12-25-19, 05:58 AM
  #3  
Senior Member
 
Join Date: Aug 2010
Location: Madison, WI
Posts: 11,204

Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 3459 Post(s)
Liked 1,465 Times in 1,143 Posts
Some Tubus and Racktime racks have technical drawings available.

For example I have a Racktime Addit rack that I have used on my Lynskey Backroad.
https://www.racktime.com/fileadmin/u.../Addit_1.0.pdf

And I have a Tubus Logo that I have used on my other touring bikes.
https://www.tubus.com/fileadmin/user...hinterradtraeg

There are LOTs of rack companies out there, not sure which others have good dimensional data available.

I am not familiar with the specific Lynskey you have, my Backroad has the rack mounting points quite high up above the axle, up higher than most other touring bikes which puts the rack quite high up. Unfortunately, that is the way Lynskey designed it, I would have prefered to have the rack down lower.

As Indyfabz noted, most of the better quality panniers have rack attachments that can be shifted fore and aft to be able to move the panniers to get them as far forward as practical without heel strike.

Without a photo of your situation, hard to say much else.
Tourist in MSN is offline  
Likes For Tourist in MSN:
Old 12-25-19, 09:40 AM
  #4  
Senior Member
 
indyfabz's Avatar
 
Join Date: Jan 2010
Posts: 39,238
Mentioned: 211 Post(s)
Tagged: 1 Thread(s)
Quoted: 18415 Post(s)
Liked 15,540 Times in 7,329 Posts
Yeah. Photo would help immensely.
indyfabz is offline  
Old 12-26-19, 05:37 PM
  #5  
Senior Member
 
Join Date: Oct 2006
Location: Orange County, CA
Posts: 4,770
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 630 Post(s)
Likes: 0
Liked 369 Times in 206 Posts
How about putting it on a front rack?
Elvo is offline  
Old 12-28-19, 08:56 AM
  #6  
Full Member
 
Join Date: Oct 2010
Posts: 294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 44 Post(s)
Liked 63 Times in 28 Posts


Axiom makes racks that offset rearward
tombc is offline  
Old 12-28-19, 09:11 AM
  #7  
Senior Member
 
Join Date: Jun 2008
Location: Shawnee, KS
Posts: 273

Bikes: Bike Friday NWT, Rans Stratus, Cannondale R500, trek 720 multitrack, Rockhopper

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked 36 Times in 22 Posts
I’m probably totally off base on this but a picture I found of your bike shows the rack mounts about 2 inches above the axle on the seat stay, this puts them in front of the axle quite a ways. Maybe there is a proprietary rack for it from Lynskey, but I doubt many racks would work on this arrangement. It puts the rack forward and high. As another poster recommended an axle mount rack might work.
Baboo is offline  
Likes For Baboo:
Old 12-29-19, 06:27 AM
  #8  
Junior Member
 
Join Date: Aug 2019
Posts: 146
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 72 Post(s)
Liked 92 Times in 45 Posts
A quick google search really shows the extent of the lynskey rack mounting problem (at least on some of the earlier frames).



Another quick google search showed there are some rearward mounted racks out there.

https://www.blackburndesign.com/p/gr...wE#pid=7096667

If you click on this link, a rack shows up. If you scroll to the left, it has some dimensions.

When I clicked on a lynskey frame, it looked like it had two rack mounts holes on each side (4 total on the bottom). My initial thought was to jury rig a surly front adaptor off the 4 lynskey rack holes to create a rearward adaptor point to mount off of. I would mount the slotted portion of the surly adaptors over the lynskey 4 frame mounts, angling the brackets as downward and rearward as possible, and then mount the rack off the lower bolt holes in the surly bracket.
..or something like that....
https://www.treefortbikes.com/Surly-...RoCQMsQAvD_BwE

Fortunately, both options seem relatively cheap to experiment with. Good luck.

Last edited by dualresponse; 12-29-19 at 06:58 AM.
dualresponse is offline  
Old 12-29-19, 06:59 AM
  #9  
Senior Member
 
indyfabz's Avatar
 
Join Date: Jan 2010
Posts: 39,238
Mentioned: 211 Post(s)
Tagged: 1 Thread(s)
Quoted: 18415 Post(s)
Liked 15,540 Times in 7,329 Posts
My Nitto Big rack on my LHT. Not for those on a tight budget.


indyfabz is offline  
Old 12-29-19, 07:41 AM
  #10  
Senior Member
 
hokiefyd's Avatar
 
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,141

Bikes: More bikes than riders

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1446 Post(s)
Liked 762 Times in 570 Posts
This topic interests me, because I have a similar issue on my daughter's GT mountain bike. It has only a single pair of lower rack mount points, and they're on the seat stay above the welded dropout -- so about 3" above and forward of the axle...putting the rack fairly close to the saddle. I like Axiom's solution, but I like the Topeak MTX series racks because I have a few of their MTX bags, so I'm trying to get the Topeak rack to work.

Originally Posted by dualresponse
My initial thought was to jury rig a surly front adaptor off the 4 lynskey rack holes to create a rearward adaptor point to mount off of. I would mount the slotted portion of the surly adaptors over the lynskey 4 frame mounts, angling the brackets as downward and rearward as possible, and then mount the rack off the lower bolt holes in the surly bracket.
..or something like that....
I, too, have tried to come up with a solution using similar hardware. I think the challenge with most racks (and the Lynskey looks similar) is their single lower mounting bolt hole. Without a two hole system like Axiom is using, the stand-off struts or risers will want to rotate down under the weight. If the front mounting struts are not done carefully, I imagine the two sets of struts could form a parallelogram, allowing the rack to move rearward and down under weight.

I think those Surly plates to which you've linked could work if an additional bolt hole could be drilled in the rack's vertical tube. One could then mount those plates so the two bolt holes are aligned vertically and the length of the plate extends forward (forming an "L" at the bottom of the rack's vertical tube). It still probably wouldn't be ideal, but it might work. I imagine drilling an additional mounting point in the vertical tube will weaken it to some degree.
hokiefyd is offline  
Old 12-29-19, 07:50 AM
  #11  
Junior Member
 
Join Date: Aug 2019
Posts: 146
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 72 Post(s)
Liked 92 Times in 45 Posts
Originally Posted by hokiefyd
This topic interests me, because I have a similar issue on my daughter's GT mountain bike. It has only a single pair of lower rack mount points, and they're on the seat stay above the welded dropout -- so about 3" above and forward of the axle...putting the rack fairly close to the saddle. I like Axiom's solution, but I like the Topeak MTX series racks because I have a few of their MTX bags, so I'm trying to get the Topeak rack to work.



I, too, have tried to come up with a solution using similar hardware. I think the challenge with most racks (and the Lynskey looks similar) is their single lower mounting bolt hole. Without a two hole system like Axiom is using, the stand-off struts or risers will want to rotate down under the weight. If the front mounting struts are not done carefully, I imagine the two sets of struts could form a parallelogram, allowing the rack to move rearward and down under weight.

I think those Surly plates to which you've linked could work if an additional bolt hole could be drilled in the rack's vertical tube. One could then mount those plates so the two bolt holes are aligned vertically and the length of the plate extends forward (forming an "L" at the bottom of the rack's vertical tube). It still probably wouldn't be ideal, but it might work. I imagine drilling an additional mounting point in the vertical tube will weaken it to some degree.
The rack mounts I linked to would only work if the lynsky frame still has the two lower mounting holes on each side of the frame. That would make the adaptor stable. I get the idea the points might "slide" in the slots, and that might need to be addressed. The rear rack would then attach onto the surly adapter in the same way it would attach to a regular frame. The other option for frames with only two lower mounts (one on each side) would require more jury rigging depending on the specific rack design to prevent the parallelogram effect you mention.

Last edited by dualresponse; 12-29-19 at 07:55 AM.
dualresponse is offline  
Old 12-29-19, 07:53 AM
  #12  
Senior Member
 
hokiefyd's Avatar
 
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,141

Bikes: More bikes than riders

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1446 Post(s)
Liked 762 Times in 570 Posts
I see what you're saying. Yes, I agree. For the OP, that Blackburn Grid 1 looks like a good solution. I'm thinking about that too, though it'd require me to move away from the Topeak MTX ecosystem to more universal pannier bags.
hokiefyd is offline  
Old 12-29-19, 08:56 AM
  #13  
Senior Member
 
Join Date: Aug 2010
Location: Madison, WI
Posts: 11,204

Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 3459 Post(s)
Liked 1,465 Times in 1,143 Posts
It becomes a question of how much weight do you want to put on your rear rack. This being the touring forum, likely a lot of weight.

There are racks out there that may fit, but a lot of the racks designed more for commuting might not be good for a touring kind of load.

For example, I got lucky and picked up a used Nitto R14 rack at a swap meet for pennies on the dollar. I never would have bought it at the new price, but it fits nicely on my Lynskey Backroad. I initially bought it for a different bike, but the stays were too short for that bike, maybe the stays were designed for a 26 inch bike? But, I decided to put it on my Backroad instead. With a weight rating of something near 6 kg, I do not use it for touring, it is not even close to having the capacity needed for that. Instead use a Racktime Addit (as I mentioned in a post above) for my panniers for touring. But the Nitto, although heavier than it looks is a great small rack for use around home.



My gym bag pannier fits nicely on it too.

Tourist in MSN is offline  
Old 12-31-19, 03:19 PM
  #14  
Uber Goober
Thread Starter
 
StephenH's Avatar
 
Join Date: Sep 2007
Location: Dallas area, Texas
Posts: 11,758
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked 41 Times in 32 Posts
Thanks for the comments. I just now got back in town and will take me a while to go through them.
I rode from the beach to my house in the Dallas area riding motel-to- motel. Made do with a big Carradice bag and smaller front bag.
More info later.
__________________
"be careful this rando stuff is addictive and dan's the 'pusher'."
StephenH 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.