Two Get Very High Part One by Gary Mortimer
... If you do a really good job of getting the weight off and the internal temperature drops into the 40C range then you are in danger of going solar. The sun will keep you flying and make it devilishly hard to land; more especially stop on a windy day. Thatís why when looking at the weather an overcast day might be a good idea. Now we had an idea of what to expect, what sort of oxygen equipment we needed and what we needed to do to the kit. How long would it take?