I thought I’d share my custom dual ‘side-by-side’ BTS bottle setup mimicking Ditlev’s setup earlier this year (but cleaner IMO).
Started from a 4mm carbon fiber sheet, cut to the required shape w a jig saw.
Below, the final version w titanium screws.
Earlier versions before finalizing the details:
The mounting screws are tightening the assembly in a small piece of aluminum bar stock with threaded holes (with a angle to match the angle of the plate)
One of the issues of having bottler over the saddle, is the transition racks - often they are too low to slide under without tilting the bike, and in big races they is just no space to tilt the bike.
So I designed a simple transition rack hook that surrounds the piece of aluminum I thread into.
3D printed at home. After several prototypes…
Then it is super easy to put/pull the bike from the rack from the top.
The whole system is rather simple, and only weights 107g before adding the 2 carbon cages!
So Wove Saddle (very light) + the side-by-side BTS (before bottles) is still lighter than most stand alone Tri saddles!
Also, the setup is quite rigid, not much bouncing at all (much less than videos I’ve seen of the EZgains setup). I’ve ridden over 1000 km with this setup, no issues.
As for whether it is faster than the dual-bottle setup in vertical stack up I was using before, I did not get to test yet. Also not sure my aero-sensor & protocol are fine enough in resolution to determine that with any confidence. I do feel it is easier to get bottles in/out than with the cage under the saddle.
Anyway, pretty happy with how this turned out on may aspects (look, functionality, weight).