I ran the TriRig Omega X (I believe it was the X - it was in autumn 2016) under the BB on my P5 for a month or so, but during the first ride in the rain it gunked up within an hour to the point that the brake would not release properly from the brake track. I'm contemplating trying it again (except the gunked up part!), but would like to get an idea of whether it actually is possible to mount it in this position and having it work for fine for more than an hour of riding in the rain. Good cabling will obviously be the first point - avoiding sharp kinks so the inner cable is running as smoothly as possible. Would something like the Jagwire Elite Link help a bit in this regard?

I believe some in here are running the Omega X under the BB. Does it work fine even in wet/gritty conditions? Any sort of cover over the brake or are you running the brake 'naked' (including it's own front cover of course)? How often do you need to clean and lube the rollers? Ron Ruff suggested one could try dunk it in wax as it works so well for chains - anyone tried that?

In the weekend I think I'll check whether the P5 BB cover will fit over the Omega X as that would give some shielding from all the water and grit being thrown up from the front tyre - all the grit being directed directly against the pretty exposed rollers must be a hard life for the brake in that position without any shielding.

I'm obviously especially interested if anyone is running a rear Omega X on a P5. I can see Nick build up a P5 himself using the Omega also on the rear:

https://www.tririg.com/...o_P5_Build&num=5

It's tough to see how exactly he did the cable routing, though - IIRC the kink in the brake cable seems to be way too sharp unless you ditch the cover plate that goes over the large opening underneath the BB (the guide for the rear brake cable in that plate is simply too rearward for the brake cable to enter without a sharp kink).

Any input is appreciated!