Quote Originally Posted by MomOnBike
Oh man, I'd go in a heartbeat if I didn't have responsibilities here.

Reading that article, I wondered if there isn't some smart way to get some cooler air in to the pilots of those machines. What you lose in drag might be made up in engine performance. Even racing cars work on cooling.

But what do I know, I'm not an engineer.
Cooling the bikes and staying within the realm of human powered only became the big challenge and bain of all the riders. The rules clearly state that EVERYTHING must be human powered with absolutely NO margin for stored energy. Every watt of power had to be generated by the rider in an enclosed environment. That was where everyone ran into problems and became creative. There are plenty of products out there that are battery operated that would provide cooling, but they weren't permitted.

Every bike underwent an inspection that would make a building code inspection look like a picnic. If the rider could generate the wattage necessary to power a cooling system as well as his bike, great. The problems fell into the catagories of added weight and lack of space.

Matt's bike was state of the art on the inside. He's brilliant. Unfortunately the old saying that the more complicated the plumbing, the easier it is to stop up the drain held true and even though he was powering his own cooling system, it failed early on in his run along with his camera system leaving him cooking in the dark with only one small screen to guide him.

We opted for ice..lots and lots of ice and it worked. Yes, it added weight to the bike. We must have used a good 20 pounds of ice piled into the tub and around Rob. We also used a spray mister that the rider could trigger via a pump handle that we mounted near the tiller.Having to construct it all in a hurry lead to some problems, but it was a viable design. The temp inside Varna II stayed comfortable, even though we were trailing water throughout the second run. The problem was that Rob was simply fried from the effort and the heat from his first run.

Freddy kept it simple. He stripped down to his riding shorts, cut a hole in his wind shield to act as a naca duct, got in and peddled. He kept his cadance steady at believe it or not, 60 per minute and got the job done. Which just holds true the motto of: Keep it simple.

So if anyone can come up with some ideas that we can employ into our design, PLEASE share them with us. They are planning to run the Challenge again next year, hopefull in cooler (For Phoenix that means it's only 90 degrees instead of 110) weather.

Brecca