I’m going to step out on a limb here and defend the PT. All the problems with moisture, water etc have been fixed since the new SL hubs were introduced. I’m not talking about the old-school bright-ass yellow hubs, but the black/carbon hub. I’d still stay away from the wireless 2.4 edition. CatEye can’t even get their wireless speed/cadence unit to work so I wouldn’t bank on it. (Say what you may, but I see those Cateye units returned ALL the time for the wired brother.)

When it comes down to it, power is power, regardless of the system, where it’s read (crank or hub). Remember, each system is going to be a few watts (give or take) different than the other system and you’ll have to adjust to the readings (if you have separate devices). Who cares though. Dave L has proven this - the SRM and PT are off by a few watts, bid deal. More importantly, it’s not the ‘actual’ wattage you should be worried about, but the [B]consistency [/B]of that reading. What you don’t want to do is have 2 different devices, and incorrectly assume 300 watts is the same on each of the devices. It just ain’t gonna happen and you’ll find yourself in trouble during a TT with such a strategy.

Additionally, CyclingPeaks, which we all use, doesn’t care what system you’re using. You’ll still get TSS, IF and all those readings.

Now, from a logical (i.e. financial) point of view, the SRM makes little sense. Even if it requires the purchase of two (2) PT hubs. Let me explain:

First make a few assumptions:
1. $3240 price tag on the SRM (with discount)
2. You’ll need a set of race wheels
3. If you went the PT-route, you’ll need two (2) sets of wheels (training/racing).

Competitive is showing a price of $1100 for a PT on a Mavic Open pro, a proven all-rounder which can take a beating. You can get a matching front for like $200 easy. So we’ve got 1300$ and power, on a training wheel.

$1600 for a PT in a 404 rear tubular + $900 for a matching front = $2500.

Together you have $3600 - 10% = [B]$3240[/B]. Now you’re training and racing with power. Fair enough.

But wait Mr. Dávila, you’ve already spent more than the cost of the SRM? al contraire monsieur….remember you still need a set of Zipp wheels to race on if you went the SRM route. Add another $2k = [B]$5200[/B] total.

So you’re looking at $3200 vs $5200 to have an ‘identical’ setup for both racing and training situations.

Now what about tt’ing? Pay a few $$ and get a disc cover setup for the rear 404. Per the MIT study/wind tests, apparently the first 1/3 of the bike is the most important. Other than the Crr on the rear, not sure the disc/404 would make THAT much of a difference. Either way, that’s another cost for the disc either way.
But hey what do I know. I’ve owned both the PT and the SRM and not sure how it happened, I have multiple SRM cranks. :D

e