Occasional and Frequent Bike – Design Milk suggestion??

I am not so sure but this article on Designmilk seems to think this is one way to get the majority on the road …


Whatever your commute needs are, the C-Class bike from Ariel Rider was designed for you. Blending the features found in a city bike and cargo bike, the bicycle is meant for city commuters and their various needs. In fact, the C in C-Class stands for city.



The bike itself is not as heavy-duty as a cargo bike, but can carry an additional 300lbs excluding the rider. It has plenty of storage solutions, from a front rack that can carry items from pizza to a bag, and it even comes with a little cup holder for your coffee. The items are secured by elastic cords onto the bamboo carrying tray.


The bike is also perfect for seasoned bikers, and those who are a little rusty as well. Its power on demand system (POD) provides an extra boost when needed, which is especially helpful when biking up steep hills.





Winner – Brooks bespoked bike Bristol – the dream cargo bike


From brooks blog

We are sad to report that our John Boultbee Patented Drool-ometer took its final tour of active duty last weekend in the West Country. It sustained irreparable damage, and succumbed to its injuries shortly after Dan Titchmarsh rolled in to Brunel’s Old Station from York on his Titchmarsh Scorpion Cargo Bike.

The Drool-ometer’s fuses quickly blew and its transistors did duly melt, while the needle repeatedly pounded against the housing wall in an apparent attempt to denote a new upper limit for Drool, ultimately snapping completely from its axis.

This is all by way of saying that Dan and his bike were the unsurprising winners in one of several prize categories that Brooks sponsored at this year’s Bespoked Bristol.

Since its first instalment in 2011, Bespoked has quickly become a popular fixture on the European circuit of boutique bicycle shows. With an always thoughtful roster of exhibitors, it allows a handful of the bigger industry names to rub shoulders with a host of markedly less global operations.

Party at the front, business at the back? Or vice versa? Or both?

The emphasis is decidedly on the independent, though, and the show draws crowds who are pathologically keen to talk at length with builders and designers on the finer points of lugging and brazing, geometries and materials, paintjobs and pricing, tax returns… no subject is off limits.

In these respects and others, it bears much resemblance with the North American Handmade Bicycle Show, and as we asserted in a piece for this year’s Brooks Bugle, Bespoked seems well on the way to emulating its Transatlantic counterpart as a Centre of Excellence in all things two-wheeled and human-powered.

We once again took a stand ourselves this time out, and as mentioned, were also involved in the competitive end of things. Brooks was happy to sponsor prizes in several categories at Bespoked this year. The award for Innovation in Product and Design went to the above mentioned Titchmarsh Scorpion.

This is high-end, hand-built haulage, and has understandably been priced as such.

“This was the bike I wanted to build”, the ex-courier tells us of his prototype steel-tubed load hauler. Tipping the scales at a relatively meagre 22kg, and still with ample opportunity to shave off a few pounds before it goes into full production, his Scorpion can be described as the culmination of 12 years of R&D, the final touches having been applied mere hours before the doors opened in Bristol last weekend.

The Scorpion differs from most other two-wheeled cargo bikes in its use of a hub centre steering system, as opposed to the standard solution of a single-sided steering shaft running the entire length of the loading area’s underside. Still with us? For readers who wish to go deeper, Dan explains in some detail on his website the rationale and execution of this move.

One place where he fortunately refused to deviate from tradition, however, is up on top of the seatpost. He took a Titanium Team Pro to finish things off, as will hopefully his drooling line of customers, who are already waiting for him to complete an initial short-run batch of production models.

Here and elsewhere, Brooks has frequently celebrated the Cargo Bike’s resurgence outside of its traditional Scandinavian strongholds, so we hereby extend our warmest congratulations again to Dan on a fine job of work, and on being the recipient of our Brooks Innovation Award at Bespoked 2013.

Danish Cargo Bike Champs ….

from copenhagenize.com

Svajerløb 2012 – Danish Cargo Bike Championships

Svajerløb 2012_2
Last Saturday was this year’s Svajerløb – Danish Cargo Bike Championships here in Copenhagen. The races were run at Carlsberg, like last year and it was fantastic day. Above are all the participants at the end of the day.
Svajerløb 2012 - Hans from Larry vs Harry
Hans, from Larry vs Harry, started the proceedings by welcoming everyone and then yours truly took over the mic as announcer.
Svajerløb 2012 - Italians
One of the best things about this year’s races was that we had so many people from abroad who made the trip to participate. Above is Francesco, who brought two of his Bicicapace bikes and his his family and he took part in the Individual Two-Wheeler race and the Team Relay.

There was also a wider selection of bike brands participating. Batak was there again this year and there were OmniumsLongjohns, Shortjohns, you name it.

Svajerløb 2012 - Specator Svajerløb 2012 -Spectator
Our kids were the best spectators, of course. Don’t let these quiet moments fool you.

Svajerløb 2012 - Team Relay Medallists
Here are the medallists of the Team Relay. Team Bullitt confidently defended their gold medal from 2011.
Svajerløb 2012 - Two Wheeler Champions
There was drama in the Individual Two-Wheeled discipline this year. The race went right to the wire. Jumbo from By-Expressen – a Copenhagen messenger company – took the honours on the top podium this year, dethroning the otherwise untouchable Claus Bullit (behind the beer bottle at left)
Svajerløb 2012 -The Two-Wheeler Final
Here is the line-up for the final. 12 bikes. Bullitts but also a short-john and an Omnium.
Svajerløb 2012 - Claus Bullitt
Claus Bullitt was first into the loading zone after the first lap.
Svajerløb 2012 -The Champion
It was Jumbo, however, who squeezed past him on the last stretch on his Omnium cargo bike.

Svajerløb 2012 - Ladies Champion
In the Ladies Individual Two-Wheeler final, Charlotte bettered her second-place from last year and took gold. Fanny from Klara Geist in Berlin took second and Hans’ wife, Signe, took third, but wasn’t present for the ceremony.
Svajerløb 2012 - Vintage Cargo Bike Champions
Here are the winners of the Vintage bike discipline – only old school cargo bikes allowed. The silver medallist, Trevor at left, is from Australia. Which makes him the Australian Champion, of course. Good onya.

Svajerløb 2012 - Fanny Svajerløb 2012 - Music
Fanny and Willi, from Berlin, provided the music and speaker system on their Bullitt, with one of their great Klara Geist speaker systems.
Svajerløb 2012 - 3Wheeler Medal Ceremony
Medal ceremony for the Three-Wheeler discipline. Leif dominated the field and walked away as Danish champion for the fourth year in a row on his Kangaroo. Somebody, please… give him some competition! Second and third place went to two Berliners on Christiania Bikes.

Svajerløb 2012 - Hans und Arne Svajerløb 2012 - 3Wheeler Medal Ceremony_1
Here they are at left – Hans and Arne – going for a practice spin. And here are the winners (at right). Leif got a medal, but we’re sure he’ll remember the Cyclelogistics cargo bike pencil holder even more.

Svajerløb 2012 - Lasse and Steve Svajerløb 2012 - Brandon
Steven from Grid Chicago – going for a ride with Lasse from Bicycle Innovation Lab – was in town for the event, together with Brandon, at right, dressed in true Svajere style for the day.
Svajerløb 2012 -Birte Svajerløb 2012 - Bride to Be
The audience darling, however, was Birthe. She was on a bachelorette outing with a group of girlfriends, being ridden around in a Christiania bike. They came past and entered the Team Relay with a team called Team Love. That’s the spirit! We enlisted the services of the bride-to-be during the medal ceremony, handing out the medals and cheek kisses to the winners.

Svajerløb 2012 - Bullitt Wheelie
This guy popped wheelies on his Bullitt like it was nothing. Riding back and forth on the back wheel. Only a handful of people on the planet can pull this off. God knows I’ve tried. Impressive.

See you all next year!

Easter Monday potter on the bikes

A lovely morning so loaded up the small Islabike and headed west to the parks and the canal.

heading west

Bella was on the back of the Yuba Mundo with her little bike strapped to the side – a few roads to go on and not yet safe enough for an unskilled 4 year old

over the shoulder shot

then to the west where we stopped for a bite to eat … before heading to Kelvingrove park where the girls cycled and tired themselves out.

crazy lunchtime

So on the way back it was a bit of this

bodged up bike carrier

followed by this

the ride home

Madsen Cargo Bike VIDEO

Madsen Bucket bicycles are arguably the first urban bicycles designed to transport groceries, laundry, surfboards and kids (though not all at the same time). “After hauling six neighbor kids around in a wheel barrow bucket bolted to the front of our first prototype, we started to realize what a bicycle can really do,” say the folks behind the development of the Madsen kg271/BUCKET bike. Their end product is a stylish mode of utility cycling, perfect for green minded parents looking to combine urban errand running with fun kid hauling!

Company Website HERE

Ditch your car and hop on a MADSEN. Ride the city with the commuters, the hipsters, the messengers, and the moms. Rediscover your community. Embrace your freedom.
And rejoice in the power of your own two legs.

No Comment Needed


1 car = 42 bromptons



Bikes are the future – if you live in a city you owe it not to yourself but everyone to get on your bike and use less car transport. A bike city is a friendly city. And if petrified about theft then get a Brompton and take your bike into places with you.

The Bling Dummy (via NCC Velograph BLOG)

Wow – always had a soft spot for the big dummy but look at this …

The Eddington Big Dummy Project deserves a post of its own. We can take very little credit for the spec on this bike, as it was mostly chosen before it was presented to us. Janice has excellent taste in components. The red Rohloff came straight from Germany for this project. We matched the anodized red with a King front hub, King Headset, Crank Bros 50/50 Pedals, Salsa Skewers and Seat Clamp. The … Read More

via NCC Velograph BLOG


Anyone out there with an interest in ‘rambling’ (in the sense of kite,bike,tour,camera, surf) and who want to contribute then get in touch. I only started this blog as a ramble into the ether and now it turns out that people read it so – if you fancy writing about your tour on a surly big dummy, fell-running, bike maintenance or even reviews of things or places then I want to hear from you.

girls gone punctured

Bottom line – Ordered Schwalbe Marathon Plus Tour and some slime inner tubes after jolene got marooned with the girls on the way back from school. The front tyre punctured and when she tried to push the inner tube rolled out of the Fat Franks ….. she had to call her brother for rescue as i was away.

stranded when it's time for dinner

The Yuba is heavy and then with 2 extra kid seats and an electric motor it is garanteed to be a plus 60lbs beast.

Yuba mundo electric wheel

Shot with my Hipstamatic for iPhone

Electric front wheel on the Yuba Mundo – sparticle 250w – still installing

Product Information

With the all new Bafang Permanent Magnet Brushless Motor for higher efficiency and more power throughput.

The 2010 Sparticle Kit comes with many improvements (after listening to our customer feedback) including:

  • crusie control
  • handlebar mounted ON/OFF switch and a quality throttle with battery gauge.
  • An extremely easy to fit extendable modular wireharness system (E.W.S) with stylish sensible connectors so if you havea cargo bike, a trike, or a recumbent you can use inline extensions to ensure the cables are just the right length.
  • Battery locks on with a 1/2 inch key operated bolt
  • Upgraded charger circuitry to balance the battery cells for a longer life and better performance.
  • Quality rims with stainless steel spokes so your pride and joy won’t rust overnight.
  • A variety of specially made washers are available to ensure the perfect motor wheel fit in your bicycle forks.
  • Disc brake front motorwheel available in 26″ wheel.

This is a well designed, lightweight, easy to fit, reliable (tried and tested) kit using a 24v 10Ah (240 Watt hour)  lightweight bubblepack battery that delivers great performance.
Please note it is FRONT WHEEL fitting and rim brake & disc brake compatible.

Max Range   20 to 35  miles (atob acheived over 40 miles)
Max Power    600 watts
Nominal Power    250watts
Hill Climbing    15.00%
Max Motor Speed    13-15 mph
Peak current    25Amps
Ave’ Charge times     2 to 4 hours

Motor    Permanent Magnet Brushless 250Watt continuous
Battery    24Volt 10AmpHour Lithium = 240 Watt Hours
Suspension    n/a
Brakes    n/a
Gears    n/a
Assist Modes thumb throttle or twist grip both with cruise control (pedelec optional extra) Handlebar mounted On/Off switch
Weight    approx 5.5Kg
Warranty    1 year on all parts, Yes even the battery!

One of the lightest kits on the market from the market leading ebike retailer.

Note: Front fork clearance for the motor needs to be 100mm.

What your frame is made of Part 2 – STEEL (is real baby)

custom frame by Robin Mather

Steel is Real

Bicycle framebuilders have known about the secret of steel for a long time. In fact, steel has been used to build more bicycle frames than any other material. It has also been used about 50 years longer than any other material currently in use.

Steel or Fe, from the Latin ferrum – and that’s where the term ferrous comes from when we refer to ferrous and non-ferrous materials. As you may have guessed, steel is a ferrous material, and aluminum and titanium are non-ferrous.

Iron is the fourth most abundant element in the earth’s crust, so in the near future we probably won’t be running out of the material that’s used to build steel bikes (chromium and molybdenum are different stories, however). Iron rarely occurs as a chemically pure metal, except in meteorites.

How do we get from iron to steel? We add and subtract a couple of ingredients while its molten, and voilà, steel – OK the truth is more complicated but yes it does happen.

4130 steel – an alloy steel – which is commonly known in the bike industry as chrome-moly, contains the following alloying agents: 0.28- to 0.33-percent carbon, 0.4- to 0.6-percent manganese, 0.8- to 1.1-percent cromium, 0.15- to 0.25-percent molybdenum, 0.04-percent phosphorous, 0.04-percent sulfur, and 0.2- to 0.35-percent silicon. The other 95-plus percent is made up of good old-fashioned iron. Now, there are hundreds of kinds of steel, but 4130 finds its way into bike frames because, among other attributes, of its weldability, formability, strength, ductility and toughness. (Some cheap bikes are made with 1020 steel, which is called plain carbon steel, and has significantly lower strength than the chromium-molybdenum steels.)

The numbers that I’m throwing out are designated by the Society of Automotive Engineers and American Iron and Steel Institute: 41XX designates a chromium-molybdenum steel (CrMo), while 10XX designates a plain carbon steel – which, if compared to 41XX steels, has fewer alloying agents, lower strength and lower cost. The first number specifies the type of steel: 1 = plain carbon, 2 = nickel, 3 = nickel chromium, 4 = nickel, chromium and molybdenum, 5 = chromium, etcetera, ad nauseam…. The second number relates to different things with different alloys. In the case of 4130, it defines the percentage of chromium and molybdenum in the alloy. The last two numbers tell you the amount of carbon, expressed as hundredths of a percent. 4130 therefore has 0.3 percent carbon.

From now on, in the bicycle lexicon of this series, I’ll be using 4130 and CrMo interchangeably, even though not all CrMo’s are 4130. CrMo is by far the most common of all the steels used to build high- quality bicycle frames. And I’m making an assumption that the readers who ride steel frames aren’t riding crap.

look at my lovely lug

Choosing Steel as a Frame Material
The bicycle-frame designer must take many different factors into account when deciding what material to use for fabrication. Even after looking at all the characteristics, there is no clear choice.

But even so, there are many good reasons to use steel as your material of choice in a bicycle frame. Let’s go over the physical characteristics that were defined last time, and see where steel fits into the scheme of things, as compared to titanium and aluminum.

(Disclaimer: For the sake of simplicity, I will refrain from making comparisons to carbon fiber, metal matrix composites and other materials now. When those materials are covered, comparisons will be drawn to Ti, Al and steel.

We started with density in the opening article because it is perhaps the easiest property to understand. Unfortunately for steel, it is “density challenged,” to use 1990s vernacular. Weighing in at 0.283 pounds per cubic inch, it’s almost twice as dense as titanium (at 0.160) and pretty near three times the density of aluminum (at 0.098). Clearly, density is a very important property, because light weight is where it’s at with bicycle frames these days, and high density makes it tough to push that weight envelope.Fortunately for steel, there are other important properties to examine.

This is where steel shines, as compared to Ti and Al. Young’s Modulus for steel is approximately 30 million pounds per square inch. The titanium alloy Ti3Al-2V is 15.5 million psi, and 6061 aluminum is approximately 10 million psi. Those ratios (three to two to one) are almost identical to the density ratios between these three materials. That means that the stiffness-to-weight ratios for the three materials are about the same (provided you’re looking at stiffness in tension or compression).

If you really want to know, Young’s Modulus is the ratio of stress-to-strain in the region below the proportional limit on the stress-strain curve. This was briefly described last issue. All you need to know is: the bigger the number, the stiffer the material. Wait a minute, though. How come, if steel is so stiff and Al is not so stiff, that those big-tubed aluminum bikes are so incredibly stiff? Young’s modulus measures the stiffness for all of these materials with the same-size specimen, or section. We can call the measurement section modulus. One of the pieces of the puzzle the bike designer gets to throw in is the size and wall thickness of the tubing used. Then we get to figure the polar-section modulus of the material by the formula: 0.196 (D4-d4)/D). All this formula says is that as a tube’s diameter increases (D), the stiffness increases to the third power of that number (d is the inside diameter). Comparing a one-inch tube and a two-inch tube of equal wall thickness., the fatty is going to be eight times as stiff as the little weenie tube. And the weight will only double. Now does the ride of those Kleins and Cannondales start to make sense? (and also the reason after riding my Klein I sometimes feel like I have been punched in the kidneys.       FAST = Unforgiving)

Another simple illustration of how this works is to compare two tubes of the same weight, and look at the increase in stiffness as you increase the diameter. Take a one-inch steel tube with a wall thickness of 0.049 inches. Compare that to a 1.5-inch tube with a wall thickness of 0.032 inches. They weigh the same, but the 1.5-inch tube is 1.6 times as stiff.

Your next question should be: “Why not increase the diameter of steel tubes like you do with aluminum, so that we get an even lighter bike?” This is where the “beer-can effect” comes into play. As a tube’s diameter-to -wall thickness ratio gets above 60- or 70-to-one, the tube is more likely to suffer failure due to buckling, or “beer canning.” Al and Ti, being lower density materials, allow you to have thicker, buckling-resistant walls.

Once again, this property is an indicator of ductility. Simply, it measures how far a material will stretch before it breaks.While the previous properties – density and stiffness – don’t change significantly with alloy and heat treatment in any given material, elongation is another story. Like strength, elongation is all over the map depending on heat treatment and the nature of the alloy. Elongation is expressed as a percentage.

When tensile testing a material, it’s pulled apart and stretched until it breaks. Marks are made on the specimen, and the distance between them is measured before and after the specimen breaks. The difference is expressed as the percentage elongation. Steels used in bike tubing typically measure elongations of 9 to 15 percent. If the elongation number dips below 10 percent, I consider it a flag to take a closer look at the overall properties of the material.

Risk of brittle frame failure increases as this number decreases. In particular, you need to look into the strengths of the material – toughness and the endurance limit.

Tensile Strength: Ultimate and Yield
There is a huge variation in the measured tensile strength of different steel alloys and different brands. Generic CrMo might have a yield strength of 90 KSI, whereas True Temper OX3 measures out at almost twice as much: 169 KSI. It’s possible for a bike that’s made out of either of these materials to break. We know for a fact that straight gauge American airframe tubing is a very reliable material to build a bike with. But it has a strength of only 90 KSI. Again, maybe we’ll find that the toughness and elongation of this material is fantastic, so we can get by with a lower strength.

If the True Temper OX3 tubing is twice as strong, does that mean you can build a frame with half the wall thickness? Yes. Will it be as strong? No. Will it be as stiff? Heck no. Will is last as long? Doubt it.

The Big Picture
The point here is that there is a lot to consider. If you merely look at a couple of the numbers, you’re not necessarily getting the whole picture. It’s easy for a metallurgist to convince an ad guy about the superiority of one material over another. Look at the two materials mentioned above. Very different strength numbers, identical density, yet you can build a good bike out of either material.

Steel is a wonderfully reliable material for building bikes. It’s safe to say that there’s no more successful material ever used. It’s easy to work with, can be easily welded or brazed, requires simple tools for fabrication, fails in a predictable manner (as opposed to sudden or catastrophic), and is cheap!There have been few challengers to steel’s throne of best material in the last 100 years. For a 4 decades, we have seen aluminum increasingly being used in bikes, and titanium has been used successfully for about 30 years. But steel is being seriously challenged by an increasing array of relatively (in bike building) newer materials. To learn more about these, stay tuned….The next installment of this “Heady metal” series will cover aluminum.

Guys at Lighten up bikes helping George. « The Beltline Bike shop


Guys at Lighten up bikes helping George.

This is George. George lives in SW Atlanta

George is 62 years old.

George is a Vietnam Vet

George lives in his Grandmothers house. She is in a nursing home.

George collects cans to supplement his social security income.

He collects cans by the roadside and hauls his load on this bicycle. Last night, I received an email from my friend Ken that simply said “we gotta get George a Mundo”. To which I replied, “Who the hell is George?”. To which Ken replied, “dude george the guy who hauls all the cans on his bike up and down murphy”. One dollar for George was born.

The idea is this, if enough people donate one dollar for George we can set him up with a Yuba Mundo cargo hauling bike that’s tricked out just for hauling cans. We are NOT a non-profit corporation. The filing costs would put us well on the way to a Mundo so we’re doing this on the honor system. We will be incurring Paypal fees and perhaps a few unforseen expenses but, beyond that, every penny will go towards a badass Mundo for George and if anything is left it will go to some charitable use.

Please give to onedollarforgeorge.org


via Guys at Lighten up bikes helping George. « The Beltline Bike shop.

NOTE: IF link is not working login to your paypal and send money to scott@onedollarforgeorge.org

yuba ride in the park

Just found some photos from last year – before I had the other child seat on. Just with the homemade stoker seat

…. had strapped ruby’s bike on the side for the ride down to the park where she could practice.

In the park it is quite a care free jolly around – the Yuba makes a great platform to shoot from – would be happy sitting backwards  (with another driver)  whilst shooting on my HD rig – and with these big tyres probably smoother than most tracks and dollies.

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