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OK, so I've always buggered around with nutrition and have never got it right. I'm going to take lots with me to make sure and eat eat eat drink drink drink. I've bought 6 Clif bars, 6 power bars, 10 SIS go gels, 10 SIS Smart1 gels a pack of salted peanuts (salt) and enough energy powder to turn the Liffey green as they say. I will be carrying it all. Nah, jut kidding. I'll take as many bags of powder and gels etc that I can fit in my pockets and my top tube bag. I plan on consuming a litre of GO per hour and at least one gel per hour. A clif bar on each descent as a reward.

I finally got myself a string vest base layer from Dauphine cycles on Box hill (what a fantastic shop, wall-to-wall Assos and some very,very,VERY nice bikes for sale, suits you sir). I've been hankering after one of those string vests for some time, in fact since I saw Malcolm Elliot wearing one at the Lanzarote thing. I've been wearing it today to make sure it won't irritate me, might even wear it to bed, ooh er. But my favourite is this bad boy....

The Ron Jeremy of Bidons....

Yep, that is a 1L water bottle. I held back on carrying two since it can be a little awkward to pull out and handle, fnnarr-fnnarr. That extra 250ml will make all the difference ;-)

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W'bal optimisation by a mathematician !

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I tried to optimise from a domain and  programming perspective, where Dave Waterworth, a mathematician found a much more elegant and fast reformulation.

This means W'bal can EASILY be computed as you ride.

To explain the math here are his words;

I posted a comment on you Blog post on optimising the Wbal model. I've done some more thinking and I defn think it can be done without visiting the previous samples as the Skiba formula can be decomposed further, i.e. From your blog I believe the integral part of the equation is:

Basically this takes a weighted sum of preceding W'exp samples where the weight decays at a rate determined by tau, older samples are weighted less than newer ones. We can approximate as a sum provided tau is large compared to Ts (the sample rate):

Basic properties of exponential functions allow the for…