Gear Watch: It's a Seat Post. It's a Bike Pump. It's Both.

BioLogic makes some interesting, innovative accessories for cyclists, including a folding bike helmet, a handlebar-mounted air horn, and an electricity-producing wheel hub that can power or recharge electronic devices while you ride.

But of all their products, the one that jumps out to me is the PostPump 2.0 Seatpost ($50). In many ways, it takes a fundamental principle of ultralight backpacking—utilize gear that can serve multiple purposes—and applies it to the bicycling world.

The PostPump 2.0 integrates a traditional floor pump design into the bicycle seat post. To use it, simply remove the seat post and unscrew a small cap on the bottom. Out slides the pump component, which features a small flip-down foot stand and a length of hose, which you can pull out to attach to the bike tire. A reversible aluminum Presta/Schrader adapter accommodates both types of valves. Inflate the tire using the bike seat as the pump handle.

In addition to its integrated convenience, the PostPump 2.0 also provides significantly more pumping power than the smaller hand-held pumps, allowing you to inflate the tire faster and with less hand and wrist fatigue. According to the site, it takes only 40 strokes to reach 50 psi in a 20" x 1.5" tire. (Though the lack of an integrated pressure gauge, common on most traditional floor pumps, makes this impossible to measure while you're actively inflating the tire.)

There's one problem with the PostPump 2.0, however. At the moment, it's more a demonstration of innovative design in action than a solution available to most bike owners. Why? It was created specifically for the design specs of Tern Bicycles, which feature a larger-than-usual 33.9 mm seat tube diameter in the frame. (27.2 mm is the most common diameter for road and mountain bikes.)

But given the affordable price and potential usefulness of this design, I'm optimistic that we'll see it appear in a wider array of dimensions in the near future. In the meanwhile, you can see it in action in this video:

For more on bikes and cycling accessories, check out the following:

What's the Best Bike Lock? There Isn't One. (2012)
The Best Deals on High-Visibility Shirts and Jackets for Cycling (2012)
Spare Your Pieces: Noseless Bike Saddles (2011)
Get on the Bike: Which style is right for you? (2011)
An Airbag for Cyclists (2010) 
Bicycle Helmets: More Reasons to Wear One (2010)
High-Visibility Backpack Covers for Cycling (2012)
Now You See Me: Bike lights, reflectors, and high-visibility clothing (2010)

Winter Cycling
Ride On! How to Bike Through Winter (2009)
Winter Cycling: How to Keep Your Head and Ears Warm (2012)
Studded Bike Tires for Winter, Part 1 (2011)
Studded Bike Tires for Winter, Part II (2011)
Winter Cycling: My Clothing System (2010)
Winter Biking: Keeping Your Hands Warm—Are Bike Pogies the Answer? (2009)  

Equipped” is an AMC Outdoors blog, written by Matt Heid.

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