I tried to upgrade my MacBook Pro to the Developer Preview of OS X Yosemite (10.10); it went reasonably well until the second reboot. At this point it was sat there with a half-full progress bar under the Apple logo. I left it a few hours, nothing changed, so I set about fixing it. (more…)
As I mentioned when I first fit them, one of the perceived drawbacks of tubular tyres is that if you get a puncture you can’t “just pop a new tube in and carry on”. I put that in quotes because I have personally never found it particularly easy to change the tube on clincher wheels, and about 10% of the inner tubes I’ve ever bought have air-retention issues from the factory (predominantly at the base of the valve stem).
Today I had the opportunity to test whether the experience of changing a tubular tyre in the event of a puncture is actually harder, similar or easier to changing a clincher. It’s easier. (more…)
Just for fun, let’s look at my pacing segments on the mountain bike:
The power numbers are estimates from Strava because I don’t have a power meter on the MTB. (more…)
I decided to try and quantify the speed difference between mountain bike and road bike. TLDR; the road bike is approximately 13% faster (equivalently the mountain bike is 15% slower). If you are commuting, buy a cyclocross bike. (more…)
It’s Wednesday, so last night was time trial night as usual. Here are my down and up splits in the format we’ve seen before:
Compared to previously these splits are much better paced, as you would hope given I now knew what I should be doing. I clearly took it too easy on the first two laps, dropping around 30 seconds that I didn’t need to drop. (more…)
The Fast Forward Aluminum is a triathlon and time trial specific seatpost that, when used with a standard road geometry frame, allows the rider to obtain a position commonly found with steeper seat-tube angled triathlon and time trial bikes.
This is pretty-much exactly what it does. I fitted the saddle from my mountain bike to it, installed it ensuring the saddle-to-bottom-bracket distance was the same as usual, and this is the result (in front is my normal saddle/seatpost in its normal position):
Cerys improved her 10 mile PB from 37.42 to 36.00 last night; an improvement of more than 6% (and 10% on her immediately preceding effort). Also impressive was how she did it: she thought my pacing plan made sense and tried to execute it. Here is her ride last night as a comparison table:
Very very consistent within each lap. Looking at the overall times her first and last laps were similarly speedy and the middle two are a little bit slower. The next thing for her to work on is her breathing because this performance was adversely affected by a stitch; an indicator of shallow breathing.
Couldn’t ride tonight’s 10 mile TT to test my pacing theory myself because of this:
Cerys was able to ride, worked to the same theory, and set a massive PB.
So I’m trying candle wax as a bike chain lubricant. It’s not as random as it sounds: paraffin wax has been used by cyclists for many decades and usually outperforms everything else when tested, and I’m fairly sure the candle wax I have is mostly paraffin. Waxing the chain requires you remove it from the bike, which I had to do anyway to fit the new front mech, so I took the opportunity to give it a go. (more…)