Monday, 18 February 2013

Yuba Mundo Cargo Bike Build Part Two


Since posting the first installment of the Yuba Mundo build in December, its taken two months to complete the build. The Yuba Mundo is ready for the road.

Ready for the road
In December it was fitted with a 122 mm bottom bracket but this turned out to be incompatible with the Suntour Duro T324-P8 cranks and chainwheels. It was replaced with a 113 mm bracket, stripped from another bike. The Shimano FD-C050 front derailleur was also incompatible with the Suntour Duro, and was replaced with a Shimano FD-C051 derailleur.

The Yuba Mundo stand from Yubastore Europe in Germany cost almost 100 euros. It's a solid, wide stand and essential when the bike is heavily loaded.

The back wheel was fitted with Clarks CMD-8 mechanical disc brakes. After a little fiddling they were easily installed and adjusted and are working well.

Clarkes Disc Brake
The biggest problem of the build was the SKS Blumels MTB mudguards (fenders), from Chain Reaction Cycles. I could find no provision on the Mundo frame to attach the back mudguard stays. In the end the stays were removed and the rear mudguard held in place with wire. Not very elegant looking but quite effective.

On the front wheel the bracket for the front disc brake obstructed the mudguard stays. The stays had to be bent around the brake bracket. I bought disc brakes for the front but haven't figured out how to fit both disc brakes and mudguards at the same time.

The Yuba Stand
The other big fault is that the frames paint work is poor. It's about the worst finish I’ve ever come across on a frame. The paintwork strips very easily.

I spent extra money on tyres and the crankset, so the bike has a slightly higher spec than one bought fully built. The bike is now ready for the road and the total cost of the build is about 1300 euros, about the same as buying it fully built. It took many hours of labour but was a valuable learning experience.

Now for the road testing.

Yuba Mundo Cargo Bike Build Part One

Yuba Stand from the Yuba Eurostore
79,90 + shipping

Shimano FD-C051 Dual-Pull Top Swing Multi-Fit Front Derailleur from Halfords
€12.99

Clarks CMD-8 Mechanical Disc Brake from Chain Reaction Cycles
€22.90

SKS Blumels MTB Mudguards Set from Chain Reaction Cycles
€20.91

Monday, 11 February 2013

Features of a Good Utility Bike


I own four bikes, a road bike, a touring bike, a cargo bike and a hybrid bike. My hybrid a Raleigh Oakland was the cheapest bike I bought, but it is the one I use most for everyday cycling because it has all the features I need for utility cycling. I use the road bike for sportives, the touring bike for touring and the cargo bike for work, for everything else, like going to the shop, the pub or a party I use the hybrid.

My Raleigh Oakland
If you want a bike to go shopping, collect a child from school or cycle a short journey to work, then you want a good utility bike, not a sporty road bike. In the modern world that usually means a hybrid bike. So what are the features to look for on a good utility bike ?

Cost
There is no need to spend a lot of money to buy a good utility bike. Around 300 euros will buy a good hybrid bike. Racing and mountain biking are much more demanding on components than utility cycling, a 300 euro bike is not good enough for that kind of cycling, but it's fine for less demanding utility cycling.

Anything less than 300 euros will be built with poor components and poor quality steel. In the medium term a really cheap bike will prove a very poor investment.

Frame
The most important part of any bike is the frame. I like a steel frame, which is usually about 4 or 5 kg heavier than an aluminum frame. But a steel frame can be welded if broken and straightened if bent. Steel also flexes more than aluminum and is better at absorbing vibrations. A good steel frame will be long lasting if kept out of the rain and even when it does fail it will do so gradually, rather than suddenly and catastrophically.

Look for a frame with a relaxed geometry, in other words that the head and seat tube are not close to vertical like on a racing bike, but have a more raked angle. This will give a longer wheel base, a more comfortable ride and a more relaxed steering. Don’t get too hung up on this as most hybrid bikes will have a relaxed geometry.

Look for a bike with handbars at the same height or higher than the saddle. This will give a much more comfortable upright riding position.

Once you have a good frame it is always possible to buy better components in the future. I have done 13000 km on my hybrid bike and it still has the original brake and gear components and they show no sign of wearing out.

Pedals
Platform Pedal
The pedals should be usable while wearing ordinary footwear. The rubber or hard plastic platform pedals found on cheap adult and childrens bikes will do fine. Make sure to wear footwear with good grips on the soles to avoid your foot slipping off the pedals. Avoid any kind of clip in pedals that need special cycling shoes.

Chainguard
If your going to cycle in ordinary clothes a chainguard is a must. It protects your clothes from rubbing on the chain and getting dirty. If you buy a bike with hub gears get a chainguard that totally enclosed the chain, this will keep it free from grit, greatly extend its life and cut down on maintenance.

Flat Handlebars
I would not cycle a long journey on a bicycle with flat handlebars, I would want drop handlebars like on a racing bike. But for a utility bike flat handlebars are much better, they require less bike handing skills than drop handlebars and work much better with a small bag of shopping hanging on them.

Gears
The number of gears is dictated by the terrain and the amount of cargo to be carried. In a flat place, with a little cargo a single speed bike will do. In a hilly place and with lots of cargo you need 18 or 21 gears.

If your can get by with 3, 5 or 8 gears a hub gear system is best. In a hub gear all the working parts are enclosed inside a shell, keeping them free from dirt and grit. Hub gear system are easier to maintain than the more common derailleur in which all the gears are exposed, but they are more complicated and costly, and servicing them is a skilled mechanics job.

Carrier (Rack)
Pannier Bag
A rear and/or front carrier is an essential feature of a good utility bicycle. Without it you have to carry cargo in a back pack, resulting in a very high centre of gravity and a lot of wobbling and control issues. If your cargo carrying needs are simple a basic carrier will suffice, but if you carry bigger loads you need a good set of pannier bags on the carrier, which will give a lower centre of gravity.

Mud Guards (Fenders)
If you ride in ordinary clothes on wet roads mudguards are essential. They stop the spray from the wheels ending up all over you and your bike.

Stand
A solid stand is an indispensable feature on a utility bike. The best kind are the two legged and big enough to  load and unload a bike without it falling over.

Tyres
A good utility bike has medium width tyres, not narrow like a racing bike or very wide and heavily threaded like a mountain bike. Over the years I have come to like a 700 x 35 tyre on my hybrid bike. Big enough to absorb a good deal of the shock from rough roads and carry a heavy load. For convenience sake it’s best to ride on a puncture resistant tyre, not cheap but well worth the extra cost.

Lights
60 Lux Dynamo Light
If you ride in urban areas weak battery powered front and back lights will do fine. If you ride on unlit rural roads get a powerful front light, at least 60 Lux. Ideally get a dynamo light and a dynamo hub.

Monday, 4 February 2013

The Rise of the MAMIL


Irish Economist David McWilliams has an interesting article today about the rise of the MAMIL, the middle aged male in lycra. According to McWilliams cycling is the new golf. In the boom years golf was the favored sport of Irish middle aged men, but with the decline in the economy they are now turning to sports cycling in increasing numbers.

The article says that “cycling is the biggest sporting goods market in the world in terms of revenue, according to a survey by multinational market research company NPD Group”. With "Global sales totalled nearly €33 billion last year", increasing by 4% a year since 2009.

In 2012 global sales were 33 billion euros, with around 137 million bikes being sold last year. By 2016 bike sales in Ireland and Britain are projected to rise to €1 billion per year. The total cycling market in Ireland and Britain is currently valued at €2.2 billion, including accessories, clothing, etc.

The new golden age of the bike is dawning

Read David McWilliams Article