First Impressions: Zipp 30 Course Wheelset (Part-I)

Over the last twenty-plus years, Zipp Speed Weaponry has racked up an impressive list of firsts. From the first carbon disc wheel, to the first wheel to achieve negative drag in the wind tunnel, these accomplishments have helped Zipp-sponsored athletes become champions in the toughest races in the world. And now, with the introduction of the company’s 30 Course alloy disc-brake wheelset, Indiana’s Zipp brings a new level of performance to road, gravel, and adventure riding. gravel grinder Zipp Speed Weaponry Course 30 wheels clincher tubeless SRAM XD

Image courtesy of Zipp.

When it came time to develop the 30 Course wheelset, Zipp didn’t just slap new graphics on one of their existing designs. The 30 Course is Zipp’s first tubeless-ready wheelset (clincher models come pre-taped and include tubeless valves). To balance aerodynamics and tire support, Zipp spec’d their 30 Course wheelset with an aluminum 25 mm-wide rim (21 mm internal width) that features a 26 mm profile. The new rim boasts design innovations from the company’s 202 Firecrest wheelset–which, according to Zipp–produces low aerodynamic drag, and greater stability and predictability in crosswinds. To insure compatibility with a wide range of tire widths and pressures, the 30 Course’s rims utilizes a hook-bead design that’s suitable for use with conventional and tubeless tires.

Zipp Speed Weaponry 30 Course wheel tubeless SRAM XD gravel grinder

Image courtesy of Zipp.

The 30 Course’s rims aren’t the only component to benefit from trickle-down technology. Both the clincher and tubular 30 Course wheelsets roll on Zipp’s 77/177D hubs–the same ones found on the company’s pricier 202 and 303 Firecrest disc-brake wheels. For maximum versatility, the 77 and 177D hubs are easily converted from quick releases to thru-axles (12 mm and 15 mm) by swapping the hubs’ endcaps (both types are included with the wheels). Gearing-wise, the 30 Course’s rear hubs are compatible with 10- and 11-speed cassettes from Campagnolo, Shimano, and SRAM. For gravel and adventure riders, the big news is that the rear hub is also compatible with SRAM’s XD driver (available separately), enabling the use of the company’s XG 10-42 tooth, 11-speed cassettes. Freehub bodies can be swapped sans tools, and the wheel doesn’t require re-dishing afterwards.

Zipp Speed Weaponry 30 Course tubeless 177D XD QR gravel grinder SRAM XD 10-42

Image courtesy of Zipp.

Recently I had the opportunity to demo the Zipp 30 Course wheels at the company’s new product roll-out in San Luis Obispo, California. Zipp fitted the wheels with tires from Challenge, Panaracer, Specialized (both regular and tubeless), and I rode several 30-Course-equipped bikes on paved and un-paved terrain. With 24 spokes front and rear, I was initially concerned that the 30 Course wheelset would be too flexible for my 195 pounds. Try as I might, though, I wasn’t able to induce any rotor- or tire-rub during the initial testing. The ability to run a 10-42 tooth cassette proved especially handy during one of our mixed-terrain group rides, as the route included no less than three category-3 climbs.

Although it’s too soon to comment on the 30 Course’s durability and long-term performance, I’m looking forward to performing extended testing on Colorado’s roads and trails. The combination of tubeless-readiness, XD driver compatibility, and the wide, aero profile make the 30 Course a natural for gravel and adventure use. While the $1000 price tag isn’t exactly cheap, the ability to run both narrow and wide tires on the same disc-brake wheelset increases the 30 Course’s versatility.

Disclosure: Zipp Speed Weaponry provided airfare and hotel accommodations, but offered no other form of compensation in exchange for editorial coverage.

First Impressions: Mio ALPHA Heart Rate Monitor

Cycling coaches and fitness experts have touted the benefits of using a heart rate monitor (HRM) for decades. And while power meters have become the hot ticket for monitoring one’s performance, wearable HRMs like Mio’s ALPHA ($169.00 MSRP) have generated new interest in heart rate-based training.

Unlike traditional HRMs, the ALPHA doesn’t rely on a chest strap to record your heart rate. Instead, an electro-optical cell senses the volume of blood under the skin, and the device uses algorithms to determine your heart’s true rhythm. The benefit? Increased comfort, and according to Mio, 99% EKG accuracy. gravel grinder Mio Global ALPHA HRM heart rate monitor

Image courtesy of Mio Global.

Thanks to the ALPHA’s simple, two-button interface, the device is easy to configure and operate. When you unbox the ALPHA, you simply set the time, and it’s ready to go. Mio recommends positioning the ALPHA snugly above the wrist bone when using the device as a HRM. During our testing, Mio’s ALPHA detected our heart rates on the first attempt the majority of the time. One criticism of strapless heart rate monitors is that they’re not as accurate as conventional strap-based devices. We compared the Mio with multiple traditional strap-type monitors, and the ALPHA’s readings were within 1-2 BPM.

By itself, the ALPHA’s reporting capabilities are limited to exercise duration, average heart rate, and time spent in the target heart rate zone. For true data nerds, the device is compatible with a wide range of smartphones and popular fitness apps including MapMyRide and Strava. Using Mio’s Bluetooth® Smart (4.0) connectivity, we were able to easily pair Mio’s ALPHA with Apple’s iPhone, the Magellan Cyclo 505 cycle computer, and Polar’s V800 sports watch.

For multi-sport use, the ALPHA is an excellent choice. The comfortable, strap-free design offers a viable alternative to traditional heart rate monitors without sacrificing accuracy. With its long battery life (8-10 hours in recording mode) and numerous connectivity options, it offers seamless integration. For dedicated cycling use where we don’t need the watch’s chronograph functionality, we would probably opt for one of Mio’s smaller units such as the FUSE or VELO.

During several months of testing, our sample ALPHA has withstood its share of abuse. From well below freezing to the mid-70s, it never failed to detect and display our testers’ heart rates. And despite an unexpected trip through the washing machine, the mineral glass LCD display remains clear and crisp. If we could make one change, we would like to see Mio develop a charger with a more mechanical connection. The current USB charger utilizes a magnetic interface, and can sometimes become disconnected from the watch (especially when connected to a desktop computer’s USB port).

Disclosure: Mio Global provided review samples for this article, but offered no other form of compensation in exchange for editorial coverage.

First Impressions: Compass Barlow Pass & Stampede Pass Tires

Riders who prefer skinny tires have plenty of options when it comes to high-performance rubber. But you’re looking for a wide, supple tire, the pickings can be mighty slim. Thanks to Seattle’s Compass Bicycles, fans of wide tires don’t have to sacrifice width for performance.

Compass offers tires for 26″, 650B, and 700C rims. All Compass tires feature folding beads, and most models are available in standard and extralight versions. For long life (and improved puncture resistance), both versions–which are handmade in Japan by Panaracer–feature 3 mm tread thickness. Extralight tires are available with tan or black sidewalls, while standard models are only offered with tan sidewalls.

Model Weight (g) Width (mm)
Stampede Pass
281 31.5
Stampede Pass
(extra light)
251 31.8
Barlow Pass
(extra light)
370 37.8
Tires measured on Rolf Prima VCX rims with 22.6 mm outer and 18.4 mm inner widths.

We tested Compass’ 700×32 Stampede Pass in the standard ($57 MSRP) and extralight versions ($76 MSRP), and the extralight 700×38 Barlow Pass model ($78 MSRP). Our testing took place on paved and unpaved roads, and included both utility and recreational riding. Tires were installed (with tubes) on a variety of rims, including models from ENVEHED, Mavic, Rolf Prima, and Specialized. All three sets of tires mounted easily on our test wheels, and seated without any hops or wobbles. gravel grinder Compass Stampede Pass Black Mountain Cycles TRP RG957 HED Ardennes Plus LT Cane Creek

From ten feet away, one might mistake the Stampede Pass for a basic commuting or touring tire. The tan sidewalls give off a retro vibe that belies the tires’ modern construction and materials. For those that prefer a more modern aesthetic, the extralight version is also available with black sidewalls. On the road and trail, the Stampede Pass tires delivered a smooth, nimble ride. The minimal tread proved effective on hardpack dirt roads, and behaved predictably on wet and snow-covered pavement. While the Stampede Pass tires have a maximum pressure of 90 psi, we never ran more than 80 psi on paved roads.

As good as the standard Stampede Pass versions are, the extralights are in a completely different league. Plush doesn’t even begin to describe the extralights’ ride. The extralight Compass tires practically floated over chipseal roads and broken pavement. In theory, the lighter casings are more susceptible to damage, but we didn’t encounter any issues with the extralight models. Interestingly enough, the only puncture that we experienced during our testing occurred with the standard Stampede Pass tires on an early morning commute. Based on the size of the flint-like shard that caused the flat, we suspect that a heavier, less-supple tire would have met the same fate. gravel grinder Compass Barlow Pass Rolf Prima VCX Disc Salsa Vaya

While not every bicycle can accommodate 38 mm wide tires, the ones that can will definitely benefit from the Barlow Pass’ smooth, fast ride. The tires’ plump profile proved ideal for mixed-terrain commuting and recreational rides. Some riders may balk at the idea of using $78 tires for commuting, but the Barlow Pass’ superior performance inspired us to seek out longer routes to and from our destinations. We didn’t test the tires in any competitive events, but Compass Bicycles’ Jan Heine reports that many of his customers choose the company’s tires for gravel racing (Heine completed the 360-mile Oregon Outback event on Compass extralight tires with no flats or tire damage).

Are the Barlow Pass tires effective on dirt and gravel? Most definitely–if you understand the limitations of their minimal tread. Performance on hardpack dirt is excellent. Shallow gravel was no problem, but you’ll probably want a wider tire for deeper gravel. In mud or loamy soil, we certainly noticed the lack of knobs. Compass’ Barlow Pass tires really shine on washboard dirt roads; we could comfortably cruise along at a good clip thanks to the tires’ passive suspension properties. And although they are rated to 75 psi, dropping the Barlows’ pressure down to 35 psi (front) and 45 psi (rear) will make them behave like a much wider tire on dirt and gravel.

If you need the reliability of heavily armored tires, the extralight Compass models may not be the right choice for your application. For average riding conditions–including mixed terrain use–we have no qualms recommending the standard Stampede Pass and Barlow Pass tires. Riders who are looking for the next level of performance and comfort owe it to themselves to check out Compass’ extralight tires.

Disclosure: Compass Bicycles provided review samples for this article, but offered no other form of compensation in exchange for editorial coverage.