Enter your search text in the box above

Select a result to preview

TT Bike BTA Mount

#triathlon #3dprinting #bikes #DIY

TT Bike BTA Mount - Write-up

After months of having this project on the back burner, I finally had some time to sit down and plan out the BTA mount for my TT bike.

IMG_0459.jpg

I purchased a universal BTA adapter plate and multi-bottle BTA rail from TriRig, but I guess my bike falls out of the "universal" standard because the adapter plate would not fit onto the aerobars.

Instead, I created a "baseplate" that sits on top of the headset crossbar, which threads into the bolts below holding the aerobar risers in place. On top of this baseplate is a custom "BTA tower" for the integrated BTA rail to be bolted directly into the plate. I installed some heat-set inserts into the top of the BTA tower and connected the multi-bottle BTA rail into the top of that. From there, I simply screwed in some extra bottle cages I had lying around.

IMG_0463.jpg

IMG_0460.jpg

The headset connection plate and integrated riser It is printed in PETG. The riser currently sits at 70 cm, but could be adjusted and reprinted in the future if I change the angle of the cockpit further (which is a likely scenario given my inability to leave things alone for more than a week).

I took the TT bike for a test ride out along the river and stopped at a local cafe. I was pleasantly surprised with how well the setup worked - the bottles were sturdy and unmoving even when completely filled. I lost a bottle once during riding, but that was due to going too quickly over a speed bump. I have seen some pros use rubber bands tied around the nozzle of the bottle and bottle cage for this exact reason, so I might have to do the same just in case.

The next iteration of this project will involve a way to mount my Garmin computer out front and above my bottles. I initially screwed a small computer mount meant for normal handlebars into the end of the multi-bottle BTA rail, but I couldn't get the mount tight enough to stop moving during the ride. I think the best solution is to either find a shorter computer mount that only requires one bolt, or integrate the mount into the riser itself.