Rack Dimensions
#1
Uber Goober
Thread Starter
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.
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'."
"be careful this rando stuff is addictive and dan's the 'pusher'."
#2
Senior Member
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.
#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.
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.
Likes For Tourist in MSN:
#4
Senior Member
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.
#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.
Likes For Baboo:
#8
Junior Member
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.
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.
#9
Senior Member
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.
#10
Senior Member
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.
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.
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....
..or something like that....
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.
#11
Junior Member
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.
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.
Last edited by dualresponse; 12-29-19 at 07:55 AM.
#12
Senior Member
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.
#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.
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.
#14
Uber Goober
Thread Starter
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.
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'."
"be careful this rando stuff is addictive and dan's the 'pusher'."