Don’t get me wrong… as an owner of one of the very few “extra low†Aduro mounts, my front end was already pretty clean. The extra low mount was a godsend, giving me the extra reach, waaay more than the low mount, that I need for a good outlier long:low MVA aero position. We’re not limited by UCI rules, why should be mimic or copy World Tour TT riders?
.22 in the A2 wind tunnel is good evidence that my front e d was already pretty good.
The impetus for this project was primarily the advent of super extensions, which may or may not be more aero, and secondarily the monopost concept. My P5-6 currently has three aero pedestals… two for the pads and one for the BTA mount. This sounds good in theory but the extra low mount where is connects to the base at and to where the extensions mount is pretty bulky.
The obvious solution for this is the TriRig Alpha one, which has a similar aero spacer below the “stem†concept that would mate to the native P5-6 nose cone. This system was an amazing match for my project “vintage†Cervelo P4 w/ HED triapoke. The bulky mating between the extra low Aduro mount and the basebar would be replaced by a very clean monopost. That’s the good. On the bad side the Alpha One would take away reach compared to the Aduro extra low and the bulky base bar interface would be replaced by a bulky “dragonfly†interface of the Alpha One.
Enter a clever adapter by AeroCoach.UK. This airfoil shaped mount bolts to the monopost and splits out left and right on airfoil shaped arms to make two platforms for a left and right super extension to mount AND it adds 40mm of reach. They’re not designed for this necessarily, they’re supposed to be used with proprietary super extension, but I wanted to reserve the freedom of choice for the most aero and ergonomic to my forearm super extension. The mount adapter is not threaded, so the way to do this is procure M5 nylon locking bolts for $5 on Amazon.
Tilting the adapter defeats the purpose of an airfoil shape properly orientated to the wind, so the way to get the standard 25 degrees of tilt is not using the capability of the Alpha One monopost but leaving the adapter level and using aero spacers under the super extensions or just get custom super extensions with the 25 degrees of tilt built in.
I’ll update after the bike shop mounts the bars and runs the hydraulic brakes. I’m not close to choosing a super extension but I’ve been looking at the FastTT.
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