Modular Cogs Bring Belt-Drives to Any Bike

I’m not writing this post only because the company involved has the awesome name of Schlumpf, but it certainly played a big part. The gadget in question is a new kind of belt-drive for bikes, the Advanced Belt Drive System, or ABDS.

The innovation here isn’t in the belts: the drive uses standard 14mm-pitch belts. It’s in the modular setup that uses a few standardized parts which can be changed around to work with pretty much any bike or belt you like.

Belt drives have a few advantages over chains, the most obvious being cleanliness. The belts require no lubricant, so there’s no dirt-collecting oil to soil your pants. They’re also lighter than chains. But there are disadvantages, too. For regular gearing, the “wrap-angle” around the rear sprocket is not big enough to prevent slippage. The answer has been to tense the belt, making it very tight. This increases wear and also reduces efficiency.

With Schlumpf’s ABDS, the bottom bracket has a gearing system, which means the rear sprocket can be bigger and pre-tensioning isn’t needed. Because of this, a bigger pitch (gap between teeth) can be used. 14mm is the industry-standard, but this is often reduced to 11mm for pre-tensioned systems just to get enough teeth engaged around the small sprocket.

The parts slot together like Meccano, and by combining several thin sprocket “plates”, you can make a kind of laminated sprocket of any width. The “chainline” can also be adjusted by moving around these plates relative to the adapters that hold them in place. And yes, you could even put one on a fixed-gear bike: Schlumpf makes an adapter for track hubs.

Whether belts will ever replace chains is questionable, but they’re getting more and more popular. Hell, even I want to try one out now.

ABDS Advanced Belt Drive System [Schlumpf via Eco Velo]

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Mobile Devices Need Custom Maps

Interactive Map of Afghanistan for iPad. Image By/Used Courtesy Of Development Seed

GPS maps for smartphones generally require a fairly high-speed wireless internet connection, consume significant processor resources, and are optimized for driving. But what if your 3G connection is unreliable or unavailable, and you still need to get from point A to point B — perhaps on foot?

Last week, I spoke with Eric Gunderson and Ian Cairns at Development Seed, one of the companies developing tools to create custom maps that work in a wider variety of situations, like this one. It’s not that farfetched: In a natural disaster and in the developing world, mobile phones may be useful navigational aids, but only if they can work without a reliable data connection and are optimized for different kinds of transportation than just zooming down the highway to the nearest Starbucks.

Development Seed caught our attention with a post that Cairns wrote for PBS’s MediaShift Idea Lab on custom maps for cyclists and drunken, late-night pedestrians. For StumbleSafely, DC Bikes, and DC Nightvision, a typical street map was overlaid with crime data, bike lanes, bar and bike shop locations, and municipal infrastructure: “Not just buildings and roads, but even crosswalks, medians, and topography lines.” In short, all of the data that actually helps you get where you’re going when you’re not in a car.

These maps were built with TileMill, an open-source program the company created to help governments, NGOs, news organizations, and others easily create custom maps. The idea is to make map image tiles and Geographic Information System (GIS) data as easy to work with as RSS feeds or CSV databases are today.

“We want to put these tools in the hands of the subject-matter experts and see what they can do,” Gunderson told Wired.com. Development Seed won a Knight News Challenge award for the project.

Knight News Challenge: Tilemapping from Knight Foundation on Vimeo.

One of the most-needed and currently most-poorly-served markets for mapping and data visualization support is in international development. As Gadget Lab reported this week, mobile devices are thriving in Afghanistan and elsewhere in the developing world, but data bandwidth and easy-to-find electricity aren’t.

“You can’t get an application like Google Earth working in Afghanistan,” Gunderson said. Maps On A Stick offers full-fledged, data-and-image-rich maps on a USB drive for no-bandwidth or poor-bandwidth use. The company and clients have plenty of experience with those scenarios, mapping uncharted road data in Africa, or helping relief workers provide housing assistance after Hurricane Katrina.

I think about those disaster scenarios often, just as I think about the people I love walking home alone in the city late at night.

When Apple launched the iPhone, it made a big deal about how its software team had written its own Maps client, using Google’s data only for the backend. It had to work for the touch interface, but it also had to make sense for how people would be likely to use Maps on a mobile device.

Now that easy mobile maps have become a natural part of our smartphone-carrying, 3G-surfing lives, it may be time for us to broaden our assumptions about the kinds of maps we’ll need and the conditions we’ll have when we need them.

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Gorgeous Retro Bike-Computer Counts with Class

If you want to know just how fast you can go on your vintage fixed-gear conversion, but can’t bear to put an ugly plastic computer onto your beautifully curated bike, this concept bicycle speedometer could be right up your bike-lane. It comes from Estonian designers Redfish Creative and, despite some flaws, looks pretty gorgeous.

The computer works just like any other wireless bike-computer, with a fork-mounted sensor that detects a spoke-mounted magnet as it thrum-thrums past and beams the info up to the head-unit on the bars. The difference is in the interface which looks more Gran Turismo* than Tour de France, all analog dials and twisting knobs.

The speed is shown with a needle on a dial and the mileage (or, in this case, kilometer-age) reads out on a retro-style odometer that can be switched from trip-distance to total distance at the slide of a switch. The wheel-size, which needs to be input for this kind of rotation-counting setup, is dialed in via a knob on the magnet-sensor unit.

And now the flaw, although not really a big one. The Bicycle Speedometer has a built-in electronic “bell”, triggered by pulling back on that side lever. The sound would be both a drain on batteries and less loud than a proper metal ding-a-ling model, and the holes to let out the sound would also let in the water.

Ditch the bell and I’m sold. The device is mounted with a leather-covered clip. Classy.

Bicycle Speedometer [Redfish via Core77]

*not the video-game.

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New Biomega ‘LDN’ Bike is an ‘Urban Tool’

Today we point and laugh at yet another ill-conceived bike design, only this one will actually make it into stores and is the spawn of big-name Brit designer Ross Lovegrove, not just some dude with a CAD app.

The first thing I though when I saw the LDN (for “London”) was “How the hell do I lock it?” You could run your D-Lock through that hole in the frame (there to lighten the bike and let you hang it on the wall) but then you’re left with two unsecured wheels. And because the carbon-fiber frame lacks a down-tube, the front-wheel can’t be locked to it. The only answer is three D-Locks, inferior cables or heavy chains, hardly practical on a “London” bike. And that’s before we even get to securing the saddle.

Lovegrove designed the LDN for Biomega, and it is clearly billed for city use. It has a couple of saving features: hub-gears and a shaft-drive keep things clean (both in looks and non-dirtiness) and, well, that’s it. The Lady thinks that it would be hard to ride in a skirt, and I wonder why the rear-wheel mounts on track-ends, especially as the shaft-drive means no chain pulling on the wheel, and no real need to move the wheel back and forth for perfect tension.

One more thing: The press release somewhat naively states that “LDN [is] a true urban tool.” Indeed.

Cüratorial Biomega: LDN & NYC (Press release) [Cyclelicious via Bicycle Design]

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Wallpaper Magazine Hawks Gorgeous Fixed-Gear for $4,700

Trust Wallpaper magazine to make a folding bike not just useful but desirable. And expensive. The brakeless fixed gear (natch) bike combines a steel frame by Kinfolk (a Japanese frame-builder) and Coat (a paint-shop in Portland) and comes with S and S couplings which allow the frame to be broken in two but add almost nothing to the weight, while keep the ride good and stiff.

You’ll probably guess the rest. The saddle is a specially made racing seat from Brooks, and the bike, when broken down for travel, can fit into a bag handmade by one Nivaldo de Lima. Wallpaper is actually selling the thing, in a limited edition of just two (and they have different paint-jobs). How much? £2,450 ($3,800) for the 54cm and £3,000 ($4,670) for the 58cm. The bag will be another £2,500 ($3,890). And remember, people: this is a fixed-gear bike, with no brakes.

Wallpaper* limited edition bikes for sale [Wallpaper]

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Loopy Art-Trike Bends the Mind

This trike would fit right into a remake of The Shining, only instead of being ridden by the bowl-haired Danny Torrance, it would be piloted by a stretched, nightmarish cross between a creepy child and a psychedelic, broken-backed dachshund. The movie would, of course, be directed by Terry Gilliam.

The tricycle is in fact a sculpture by Dallas, Texas-based artist Sergio Garcia, and would likely be no less useful than a normal bike in that big, car-friendly state. The 50-inch-high piece is titled “Its not always easy to tell whats real and whats fabricated” and could probably be ridden if you sat backwards and didn’t mind people staring, pointing and murmuring “Red rum, red rum” over and over.

I wonder if Garcia would be interested in a commission. I snapped the frame of my bike at last weekend’s Bike Bolo World Championship in Berlin. I imagine fixing it up with a vertical version of Garcia’s looping tube, arranged around me like a big, skinny steel forcefield stopping any other player for getting near the ball.

Trike Sculpture [Sergio Garcia via the Giz]


Social Bikes: GPS-Tracked, Phone-Controlled Rides in NYC

The Social Bicycle System (SoBi) turns bike-sharing on its head, and is set to test in New York City this fall. Instead of big, central base-stations from which the bikes must be taken and returned, the SoBi puts all the tech on the bike itself. Here’s how it works:

The service consists of three parts. First, the SoBi unit which clamps to the bike and contains a GPS unit, a cellular device and a honking-great lock. Second is the SoBi server, and third is you or, more specifically, your cellphone.

Once registered, you can use your phone to track down a bike on a map. This may be locked to a regular bike-rack or at a designated base-station (yup, there are base-stations, but you don’t have to use them). Once you find a bike, you unlock it with your phone and ride away. If you don’t have a smart enough phone, you can just punch an unlock code into the unit or unlock it via SMS.

Because of the GPS and cellular connectivity, the server can authorize you and also always know where the bikes are. It will also allow you to track yourself, totting up the calories you burn as you avoid the legendary NYC pot-holes.

The bikes have some extras. If your bike is broken, hit the “repair” button and the bike will be flagged for pick-up. And what if you pop into the liquor store and come out to find another SoBi user has already taken off on “your” bike? There’s a “hold” button. which gives you ten minutes after locking the bike before it goes live again.

SoBi founder Ryan Rzepecki says that the startup costs are a fraction of those using traditional infrastructure-based systems, like the Velib in Paris of Bicing in Barcelona. Rzepecki says that these cost around $3,000 to $4,000 per bike to set up. SoBi costs less than $1,000 per bike.

The testing of the lock is the next part of the scheme. And we probably don’t have to point out that, being in New York, the lock is probably the most important part of the whole bike.

SoBi [Social Bicycles via Crunch Gear]

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Social Bicycles bike sharing system powered by iPhone app to hit NYC this fall

Social Bicycles is a bike sharing system with a twist. Using an iPhone app, the system allows users to drop off, locate, and borrow a bike nearly anywhere. The bikes are equipped with a GPS device which is locked to one of the wheels, and when the bike is locked, it’s locatable using the app, so that someone can borrow it; when it’s in use and unlocked, it doesn’t appear in the app. The real upside to Social Bicycles is that the regular infrastructure required for bike lending systems — such as docking stations in a lot of convenient locations — are unnecessary with this system, which can get by with regular old bike racks, making it a much cheaper, fly-by-night option. It’s coming to New York City in very limited beta this fall, and we expect it to outperform Segs in the City in no time. Video is below.

Continue reading Social Bicycles bike sharing system powered by iPhone app to hit NYC this fall

Social Bicycles bike sharing system powered by iPhone app to hit NYC this fall originally appeared on Engadget on Wed, 11 Aug 2010 21:41:00 EDT. Please see our terms for use of feeds.

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Disposable Cardboard Trolley Lets You Walk Home from Ikea

Man, these great cardboard stick-on wheels should be sold in every Ikea. The kit is called Move-It, and consists of a set of self-adhesive components that stick onto a big-box purchase and let you wheel it home yourself.

Move-It is up for the James Dyson Award over in the UK, and is completely made from cardboard, from the handle up top to the axles and wheels which are designed to let you trundle across the whole city as you take your new gear home. And because it is all card, you can just toss it into the recycling bin when you’re done.

Two wheels assemblies stick onto two bottom corners, and a longer handle-piece goes wherever it is most convenient to hold and drag. As you can see in the video, it works for boxes of any size and shape, and will move loads of up to 20-kilos, or 44-pounds, letting you roll them home like a wheeled-suitcase.

The trolley will even deal with cobbled streets and even wet ground, and as you see in the video above, event the prototype, made from old boxes, managed to carry a microwave for ten miles.

It’s truly ingenious, and would make trips back from places like Ikea something to be done on public transport. You probably saw this coming, but I’d bet that this could even be towed behind a bike as long as you kept things nice and slow.

Move-It [James Dyson Awards via Pimping the Granny Trolley

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    Trek’s Broadside: Made for Mad Max

    This bad-ass, nut-busting ride comes from the fevered imaginations of the designers at Trek bikes. Called The Broadsider, the bike was made to a fictional brief featuring a post-apocalyptic story “of the legendary cliff racer Max Malco who lost his life saving a young boy from his racing rivals.”

    Sound familiar? That’s because it rips-off the story of Mad Max, right down to the first name of its main character. And if you’re going to steal ideas from a movie to make a bike, it probably should be the still-awesome Mad Max.

    The Broadsider is a concept project, but a look at the pictures gives an idea of the specs. The first “spec” on the list should be weight. This thing surely comes in at well over 60-pounds. Next are disk-brakes, likely needed to stop something this big if you ever manage to pedal it to the top of a hill and haul it over the crest.

    Low gears are assumedly a given, but its the styling that is the point here, from the bar-grips that look like (and might just be) old inner-tubes, through the saddle which could have been stitched together by Frankenstein, to that top-tube, which I pessimistically described as nut-busting up there in the first paragraph.

    This bike will probably never make it out of the near-future back to the boring present day, but if you are visiting the Trek World show this week, you may be lucky enough to see it.

    UPDATE: Trek’s Senior Industrial Designer, Michael Hammond, mailed to say that the Broadside actually weighs “around 45lbs…nonetheless it’s still a bugger to pedal up hill.” He also points out, in case anyone actually needed convincing, that “Max is just a bad-ass post-apocalyptic name!” We totally agree.

    Trek’s New Broadsider, What Mad Max Will Ride When he Runs Outta Gas [Bike Rumor]

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