Stans ZTR Rapid Wheelset

With the ENVEs replacing the Crests on the Vaya, the Crests were sitting on my shelf without a home…

So I slapped a Surly singlespeed adapter set on the cassette, along with a pile of SS cogs I had laying around…

And threw ‘em on the El Mariachi.

In garage poseur shots, they look great.

That brings up the ZTR Rapids that came stock on the El Mar.  There’s not a lot of info out there on them, so here’s a bit of data.  This is the stock build for these wheels, from Salsa, with SS hubs and lordknowswhat spokes.

Rear wheel, stripped, weighs…

1246 grams.

Front wheel, stripped, weighs 918 grams.

Make appropriate adjustments for your hubs and spokes…they aren’t light.  They are reasonably stiff, and set up tubeless well.  They do have the spoke eyelets that reduce manufacturing cost (making these more friendly for OEM specifications), but they’re not light.  (Note that all of the weights in this post are comparing the wheelsets set up for tubeless, with Stan’s rim strips and such).

By comparison, the DT240/CX-Ray/Stan’s Crest wheelset that replaced them on the El Mar is just under 200 grams lighter up front, and 420 grams lighter in the rear.  That’s about 1.4 pounds of rolling weight.

The Crests are 24.4mm wide with an ID of 21; the Rapid Rims are 25mm wide with an ID of 21.  Both share a common depth of 15.8mm.  According to Stans, the 29er Rapid Rims weigh 455 grams, versus 380 for the Crests.  Frankly, I have a hard time believing that…I’m guessing the ZTR Rapids are closer to 500 grams than 450.

That means that the DT240/CX-Rays save 130 grams over the stock build up front, and 350 grams over the stock build in the rear.  Re-donk-ulous.

Again, the El Mar isn’t a light bike, and I have not set out to make it a weight weenie.  Even with the Crests, it almost certainly weighs more than the full-suspension Superfish.  But I had the Crests, and they needed a good home.  Annnnnnd….if you’re going to do an upgrade, wheels are the place to start.

I had a chance to put about 15 miles on the Crests Saturday morning, predominantly doubletrack, doing a lot of climbing and a little gravel.  They spin up fast.  Appreciably lighter than the Rapids.  In theory, the Crests should be less rigid than the Rapids, because of the use of a SS hub on the Rapids (wider spread of the spokes) and the use of a cassette-friendly hub on the Crests (because they were moved over from the Vaya, and I didn’t see a point in relacing to a SS hub).  Perhaps because I’m a lighter rider, theory didn’t play out–I couldn’t notice any reduction in stiffness.  If anything, the Crests seemed to have more pop and more responsiveness.

I was playing around with tire pressures running the Continental 2.2″ Trail Kings (tubeless), and got down to 15 before things got too squirrely.  I think I might run 18 rear, 20 front, and see how that goes (just because I’m a bit nervous about peeling a bead on the front).

Anyone need some gold SS hub’d Rapid Rims?  They’re tubeless!

3 thoughts on “Stans ZTR Rapid Wheelset

  1. Pingback: SSStan’s Crests. | ridingagainstthegrain

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