Eeee. Fork Failure

We think E-bikes are a good thing. Seen as “cheating” by some, they encourage people to ride for transport rather than sport and enable the non-elite to enjoy all the pleasure that cycling can bring. Converting a standard bike to an E-bike is most easily done with a front hub motor conversion. These motors can […]

Porteur and Postie racks

Front racks come in all sorts of different designs but they can be categorised into either fork mounted or frame mounted. A front cargo rack is a great thing. It helps distribute weight more evenly between the wheels, it allows you to keep an eye on your cargo and it allows access to the cargo […]

More Talk of Torque

Following our recent look into electric motor torque we thought it might be useful to put some numbers into the situation so we can better understand the significance or otherwise of these torque numbers and to also compare this torque to the rider’s input and other comparable numbers. For a worked example let’s take an […]

What about Watts?

Some comments from our last post regarding torque has raised questions about watts; in particular what is a Watt and how does it relate to torque? Also if torque is so important why does everyone talk about power (watts or horse power) when talking of performance? Well let’s see………….. Power and torque are related and […]

Efficiency and Electrics

Despite the bike being a very old innovation it is still one of the most efficient transport vehicles known to man. Even a simple steel bike with one gear can propel a person at about 4 times walking pace whilst using just half the energy, making it 8 times more efficient than walking. The only […]

Build your own Box Bike.

So you want to build your own box bike? At Rodfordbuilt we applaud innovation, those creative “men and women in sheds” and we like to support people who wish to do their own thing. So here’s a few things to consider when designing your own box bike. Some information to help you avoid some of […]

Be safe, Be seen. Fluorescence and reflectance

When cycling the dark winter commute, being seen is half the battle in staying safe. To be seen as the light fades, you need both Fluorescent and Reflective surfaces on your bike / clothing. Here is a short analysis on how these materials work to help when selecting clothing or accessories for increased visibility. Reflectance […]

Tiring

Mention a tyre and most people will visualise a rubber band around a wheel to soften the ride and provide grip, but this seemingly simple device is actually quite complex. The complexity raises questions about which is the right tyre for a particular purpose and how you should choose a tyre for a particular vehicle. […]

Speaking of Spokes……

Perhaps you are wondering about the mechanics behind the bicycle wheel, how spokes work, what lacing patterns can be used and so forth. More likely, perhaps your not. Regardless, here are a few words on the fascinating topic of spokes. The spoked wheel was first conceived by Mr George Cayley who was an early pioneer […]

Buckle up and knuckle down

In order to reduce the weight of a bike it is important to explore tube dimensions such as wall thickness/diameter ratios and length/diameter ratios to determine the best dimensions for the purpose. Looking into this can lead to a somewhat interesting (for some at least) foray into stress analysis and buckling theory. Referring to a […]

Balancing Bikes

It is a surprising fact that even though the bike is 200 years old this year (2017), it is still difficult to explain exactly how it works. It is a case that we know what works and what doesn’t and how to build a really good bike; but not really why. However one thing is […]