I’m planning to make some upgrades to my 2012 P3 Classic:
TriRig Alpha X
TriRig Omega X front and back
Sram Etap
I’m wanting to know what these upgrades potentially translate into watts and ultimately into time over 40km and IM, so, I’ve attempted to do that. However, I could be seriously overlooking some things.
The P5 white paper chart shows that the P5 has 57 to 110 grams less average drag than the so-called “superbikesâ€. This translates into 6-11 Watts or 24 to 44 seconds over a 40km TT. That’s 108 -198 seconds over a 180km IM (1minute 48sec – 3minutes 18 sec). In an old post, Damon Rinard said the P3C was in the “superbike” category (at the time of the white paper).
I also looked at the TriRig AlphaX and OmegaX white papers and If I’m interpreting this the right way, the Tririg Alpha X beats the P5’s Aduro bars by 33-63 grams. This translates into 3-6 watts or 12 to 24 seconds over 40km and 54 seconds to 1 minute 48 seconds over an IM.
Adding the Omega X front brake yields an additional 2 watts or 6 seconds over 40km and 27 seconds over an IM.
I realize that I’m assuming a few things here, but would it be fair to say that by changing my 3T Aura bars and side pull brakes to Tririg Alpha X and Omega X on my P3C I could gain 5-8 watts (all rlse equal) This translates into 20-32 seconds over 40km and 90 – 144 seconds over and IM?
Time savings typically don’t simply add like you’ve done, unfortunately. The bike will certainly be faster, but likely some percentage of the summation you’ve presented.
You should build it, sounds like an awesome bike. The P3c’s lines are so classic and to make it even faster than it started is just gravy.
Remember that your classic p3 is longer and lower so you may be in a better position, Adelaide than if you were on a p5.
I tell myself that about my p4.
Don’t know about the numbers, but if you are going full Tririg on your P3C you are going to have to get the drill out. Has to be done.
Great bike with proper race geometry. They will have to prise mine out of my cold, dead hands before they get me on one of the new sit-up-and-beg superbikes. What’s the point of a clean front end if you have to sit up like a squirrel to ride the bloody thing. Good choice.
Time savings typically don’t simply add like you’ve done, unfortunately. The bike will certainly be faster, but likely some percentage of the summation you’ve presented.
You should build it, sounds like an awesome bike. The P3c’s lines are so classic and to make it even faster than it started is just gravy.
I figured it wasn’t that simple. However, I got to looking at the Alpha C white paper, and although the 3T Aura Pro bars weren’t tested, I would assume they would be at least as slow, maybe even much slower (due to the upturned brakes) than the Zipp Vuka Alumina, which was 30 seconds per 40km or 135 seconds slower over an IM than the Alpha C. That sure seems to make up much of the time the P5 gained.
Seems to me that the bulk of the drag savings obtained from the P5 over other “superbikes” was primarily from the aerobars and not necessarily the frame itself? Of course the only way to really know would be to test.
Don’t know about the numbers, but if you are going full Tririg on your P3C you are going to have to get the drill out. Has to be done.
Great bike with proper race geometry. They will have to prise mine out of my cold, dead hands before they get me on one of the new sit-up-and-beg superbikes. What’s the point of a clean front end if you have to sit up like a squirrel to ride the bloody thing. Good choice.
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Nice build! Luckily I won’t have to drill anything with Etap.
Nice build! Luckily I won’t have to drill anything with Etap.
Ahhh… err… I’ll get my coat.