Author Topic: Lightweight cargo rack  (Read 3110 times)

lidation

Lightweight cargo rack
« on: October 06, 2025, 06:33:58 PM »
I saw that Tailfin design is basically a modified Through Axle that is protruding out on either side as a support to their carbon rack. Their pannier costs $235.
I'm wondering why hasn't any Chinese doing this yet.

SP Cycle, Light Carbon, XMCS, all you guys can develop this thing probably in a few days right?  :D
« Last Edit: October 06, 2025, 06:57:47 PM by lidation »

hubba

Re: Lightweight cargo rack
« Reply #1 on: October 07, 2025, 12:22:17 PM »
Yeah I've been searching for Tailfin / Ortlieb alternatives but haven't found any. Maybe the market for them is too small.

Tijoe

Re: Lightweight cargo rack
« Reply #2 on: October 07, 2025, 07:02:13 PM »
I gave up looking for Chinese ultralight bike racks.   For several years, I purchased some of the $20 standard racks and then machined them lighter on my mill and made my own side supports that route down to an Old Man Mountain through axle.
The problem I have is that my welding of aluminum is mediocre at best, and on long multi day rides, some of my welds would fail.  (Thank goodness for tie-wraps.)
I originally ran panniers on my bike camping trips. But for bikepacking organized long distance rides, I found the racks and panniers to just be too heavy, and shifted to lightweight dry-bags.
For running dry-bags on the lower sides, you need to be able to stably mount side cradles, (Like Topeak, or Aliexpress equivalent.) or have parallel side rails that let a dry-bag sit into the opening between the side rails.  (When the custom rack builders start fitting their version of dry-bags they fit only their racks, this adds weight and cost.)

This spring, I ended up fabricating my own carbon fiber rack system.  I was able to knock of almost 9 oz from my last customize rack, and this new rack is actually very rigid and has held up fantastic on my last 2 multi-day back country rides with lots of gnarly singletrack.  - Carbon Materials cost me about $50 from Aliexpress, including the tRump tariffs, plus some milled aluminum parts using material I already had.)
- I put in close to 30 hours in research/design, and probably 10 to 12 hours machining parts and epoxying it together. 
- I sewed up a nice waterproof flat bag that fits all my tool and electronics support items, and this mounts onto the base of the rack. (About 2 pounds weight.)
- I run 2 side 12L 3-oz dry-bags on the side with 8 to 10 pounds in each bag
- I mount my sleeping bag in its 10L dry-bag along with my sleep kit on top of the rack/tool-bag.  This weighs about 4 to 5 pounds.
- Big Agnes Tent is mounted on a cradle in front below the handlebars
(I don't want to post pictures, because my approach is a new blend of existing concepts and construction that I don't want the public to see on the internet.) For now.

Note: Bikepacking.com has a 2025 review of the latest bikepacking racks.

If you have slogged through what I wrote above....

I believe that manufactures in China do not believe this to be a lucrative market.  All of my research has indicated that Bikepacking events, bike camping on back roads and gravel/singletrack is a very small market with lots of customization.   Looking at what has been for sale on via Aliexpress are racks that will sell in higher volumes to urban riders, and traditional asphalt based tours with traditional panniers.
I am willing to bet that in China there are custom small volume rack manufactures that are selling racks similar to Tailfin / Ortlieb, they are just to small to try to sell internationally.


« Last Edit: October 07, 2025, 07:09:52 PM by Tijoe »

Tijoe

Re: Lightweight cargo rack
« Reply #3 on: October 07, 2025, 10:25:57 PM »
Here is one rack that is more modern but it is HEAVY at 1.2Kg.  (My MYOG carbon rack weights about 620 grams with a LED tail light.)

https://www.aliexpress.us/item/3256805995710098.html

hubba

Re: Lightweight cargo rack
« Reply #4 on: October 07, 2025, 11:31:48 PM »
This spring, I ended up fabricating my own carbon fiber rack system.  I was able to knock of almost 9 oz from my last customize rack, and this new rack is actually very rigid and has held up fantastic on my last 2 multi-day back country rides with lots of gnarly singletrack.

Can you share some pictures of it?

Tijoe

Re: Lightweight cargo rack
« Reply #5 on: October 08, 2025, 12:00:09 AM »
Can you share some pictures of it?
No.  Not now.  Looking into possible patent.

plocnik

Re: Lightweight cargo rack
« Reply #6 on: October 08, 2025, 02:44:29 AM »
I saw a youtube video of a really lightweight DIY rack a while ago, maybe try something like it? Most materials are from Ali.

« Last Edit: October 09, 2025, 01:47:33 AM by plocnik »

Tijoe

Re: Lightweight cargo rack
« Reply #7 on: October 08, 2025, 10:32:03 AM »
Yes, I saw this video a while back.  Very well optimized for his application.   If you want/need a rack that runs only a smaller top bag, it is fantastic.  If you require side bags, or to put water bottles on the side tube, it is not so versatile.  (It is a big world out there for MYOG applications.)

When I got the bike camping and bikepacking bug about 5 years ago, I started with the traditional bikepacking configuration.  Seat bag, center bag, Bento box, and a lot of gear strapped below the handle bars on my gravel bike.  After a few trips, I discovered that the gravel bike loaded that way beat the heck out of me.  I wanted to ride multiple Tour Divide sections, so I had a Walte TI frame made as by bikepacker.  For these 2-week multi-section trips on the Divide Trail this bike is very comfortable and fantastic, but fully loaded it weighs in the 55 to 60 pound range.  (It is perfect for back country bike camping.)   Then I started riding Bikepacking timed events and did one ride on this bike, and it was terrible.  I decided to use my Spcycle SP-M05 Carbon 29er hardtail frame and it has worked out very well. The SP-M05 has no rack mounting provisions, so I went with an axle mount, and purchased a carbon fork with mounts on the blades.  Then the process of shedding weight began a couple years ago.   

2 years ago, I put together a few spread sheets regarding types of bike that use racks and some usage cases.   From my experiences and perspective, there are so many variations of riding conditions and bike types, that if you get the bike camping or bikepacking bug, you will find that one bike and loaded configuration just doesn't cut it

Attached are 2 pics that helped focus me on what I need for the rides I plan or get talked into riding.

« Last Edit: October 08, 2025, 10:39:02 AM by Tijoe »