Ice WithThat, Sir ?

Water is essential for life on earth. What is less obvious is that the almost unique properties of water ice are also essential for allowing life to exist and evolve. With high specific heat capacity, low thermal conductivity and high albedo, surface ice plays a pivotal role in regulating the earth’s temperature and hence climate.

At atmospheric pressure, water freezes to its solid state at a temperature of approximately 0 °C (or lower for salinated water). The heat of fusion of water is 334 kilojoules per kilogram. The specific heat of ice at the freezing point is 2.04 kilojoules per kilogram per degree Celsius and the thermal conductivity at this temperature is 2.24 Watts per metre Kelvin. Most materials contract when cooled but water is different. As water freezes into ice, its molecules arrange themselves into a regular lattice structure through hydrogen bonds. This is more spaced out than in liquid water, expanding its volume by about 9%. This unique property results in ice having a lower density than water, allowing ice to float (and burst water pipes).

The fourteen Windmillers gathering at the Black Horse, Brent Pelham on Thursday morning did not have the wonders of ice uppermost in their minds, however. For them the salient properties of ice at that time were merely: ‘Cold’ and ‘Very Slippery’ and ‘Not a Good Thing’. Indeed, Roger had already suffered a fall whilst cycling to the start.

After coffee and lodging food orders at the pub, riders headed off on one of the minor roads hereabouts – with a well founded degree of trepidation! This trepidation was well founded; the road was a proverbial mine field of semi thawed water and sheet ice. In the space of the next 2km, three riders had succumbed to gravity. Brian having taken a particularly hefty knock to the hip, he and Jeremy sensibly abandoned the riding for the day, whilst Rod soldiered on (I was instructed not to say “hip, hip, hooray” here, so I won’t). Importantly, no bikes were damaged.

A new plan was required ! Just as discretion is the better part of valour, so cowardice is the better part of discretion. We decided to shorten our ride and stick to larger roads where possible, with the new, closer, coffee destination of Dorringtons in Newport proposed. In true Windmill fashion, a split resulted in two different routes to coffee. One group plodded on via Ansty whilst the majority turned tail and headed to Newport via Clavering. Thankfully no further falls. Brian and Jeremy resorted to the car to join us for coffee and cake.

By now, the sun had been on the exposed roads for a few hours, so we opted to turn our route into a circuit by heading to Rickling and Stocking Pelham. Riding was fun again !

Finally back at the pub and joined by Keith and Ken, we were well served to excellent food and beer. If it wasn’t for poor Brian limping around acting as a reminder, we could almost have forgotten the dramas at the start of the day.

The big picture: Ice can be a real downer for cyclists, but without it cyclists wouldn’t exist to start with.

Thanks to Martin for organising the route, even though the script got totally rewritten !

Martin, Victor, Andrew, Geoff, Graham, Rod, Nigel, Jeremy, Brian, Roger, Alan, Howard, Simon, Chris, Charles

Ken and Keith for lunch.