Originally Posted by
racefacelefty
I have fitted SRAM Red Hydro to my tandem which is why I was looking for a coupler.
The SRAM road banjo is unique to the SRAM hydro range, Red, Force and Rival. They only sell attached to a 2000mm hose.
I tried to separate the banjo from the hose and use an aftermarket clamp to seal the hose on the banjo. The problem is that the SRAM version is pretty petite and so I had to machine it down to size to fit into the lever assembly. Like an idiot I did this with Jagwire which I hoped would be satisfactory but it was not, the rear was way too spongy.
I then bought another 2000mm hose and I had an engineering shop machine a double barrel joiner for me that replicates the actual thread into the calliper. Using 2 sets of olives, inserts and nuts I joined two SRAM hoses around the rear BB. I then fitted the brakes, bled them and hoped for the best.
The rear is not as sharp as my single bike rear but is way better than the Avids with 2500mm of cable.
So I now have SRAM Red22 Doubletap with Hydro on my tandem. eTap Hydro not available yet.
The newer SRAM Hydro uses a connectamajig in the lever assembly to thread the hose internally. The length of the replacement hose is still only 2000mm and there is no way to join the open end of the connectamajig hose to another hose without going the route I did. The actual part is not available separately in Hydro brake form but is on the Reverb dropper post although there is also no way to join that to a hose.
The "connectamajig", Formula, etc, are suppose to keep the system closed so no bleeding needed when connecting/disconnecting. IRL, I suspect it is highly likely some minute bit of air would be present at the coupler upon rejoin... and that of course would require extraction to keep the brake performance adequate.