Cycling UK Forum

I know that there are arguments over durability, but leaving that to one side for the moment, is there any consensus over whether steel or carbon forks are more comfortable? I mean, I'm sure there are very stiff and very comfortable forks in both materials, but among forks which you can actually buy...

Get a unicycle!

I have this one: https://hollandbikeshop.com/en-gb/bicycle-lights/union-bicycle-lights/union-headlight-battery/union-headlight-classic/union-headlight-un-4915-retro-led-on-batteries-black/ It's OK. I did find that it was randomly getting flat batteries, but I realised that the problem was caused by ...

How about fitting a chain case? Since I got one a couple of years ago, I have not needed to do anything to the chain. I use my bike almost every day.

What is the main advantage of flexible (e.g. steel) forks? Is it: 1. To take the edge off bigger bumps? 2. To reduce vibration? Is it possible to come up with a rule of thumb for how fork stiffness and tyre size add up? E.g. a stiff fork with a 38 mm tyre feels similar to a flexible fork with a 28 m...

If I search for "touren fahrrad" ... Unfortunately this is not good German. Different types of bike are mostly referred to as "___rad", e.g. Rennrad (racing bike), Hollandrad (Dutch bike), Liegerad (recumbent) etc. "Eine Radtour" simply means a bike ride. It does not n...

I'm thinking about this fork: https://www.sjscycles.co.uk/forks/26-inch-thorn-raven-sport-tour-steel-fork-black-52-mm-offset-b-grade47433/ Does anyone know anything about these forks in general? Is it springy like a brick, or springy like a spaniel? Hopefully the backwards-mounted v-brakes will clea...

I had not realised the Crossrail tunnels are as wide as that. OK, let's suppose that if they were dedicated to bikes, they could transport 28000 people per hour, per direction. The crossrail trains are designed to carry 1500 people each. If they go for 24 trains per hour (in each direction) that wou...

Page 107 of this document shows the greenhouse gas emissions from cars due to journeys of different lengths. Journeys up to 5 miles are responsible for 19% of UK emissions from cars. Journeys from 5 to 10 miles are responsible for a further 18%. Realistically, a lot of people are not going to want t...

When you think about cross rail, they could have used the East to West tunnel simply for bikes and it would have had a greater capacity by far than the trains and at a hugely lower cost. Is this correct? A figure of 14000 people per hour is sometimes quoted as being the number of people who can be ...

I have decided to try superman handlebars rather than tiller on my Metabike. The stem for the superman bars requires a much longer section of steerer to clamp onto, so it looks like I am going to need to get new forks. Is it worth having flexible steel forks on a recumbent? I feel that the bumps are...

My understanding is that there are considerable doubts over whether using vehicle batteries to support the grid makes economic sense. Vehicle batteries only have a limited number of charge cycles, so if they are used to supply electricity to the grid then it shortens the batteries' life. It may be b...

Hello Quicksilver

Perhaps if you switch to clip-in pedals and cycling shoes, you will be able to comfortably spin a bit faster. If you know that your feet are securely attached to the pedals, you can relax more and focus on spinning.

It seems to me that there are three questions being discussed here: 1. Are electric cars any good? 2. Are segregated cycle paths any good? 3. Will electric car charging points interfere with cycle paths? I think electric cars probably do have some role to play in the future, but I think they are als...

[XAP]Bob wrote:Water takes 4200J/degree/kg
Air takes 720J/degree/kg

Additionally water is significantly more dense, so you get more water around something, and has better thermal conductivity...

Don't forget the latent heat of vapourisation!

If the water boils, it absorbs 2260000J/kg!