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Human-Powered Vehicle Speed Competition
nsasch writes "Over at Battle Mountain, NV on SR-305, for the 2008 Battle Mountain World Human Powered Speed Challenge (mirror), some of the best cyclists will be competing in human-powered vehicles to break speed records. The current world record was set in 2002 at the same location with a speed of 129.6 km/h (81 mph) by Sam Whittingham in a custom-made recumbent bike. A lot of advanced aerospace engineering goes into these machines to reach highway speeds on less than one horsepower. Take a look around their site for pictures of the event and this year's records. It ends 20 September, so more pictures and results will be coming."
This is the pinnacle of human-powered vehicle evolution. Here are some features:
- Compact, lightweight frame cuts down on weight and complexity while adding strength.
- Unique wheel placement and design ensures maximum power transwer to drive wheel while reducing drag caused by friction stemming from contact surface area.
- Portability - it's like owning a segway that you can hand-carry into the store!
- Ability to self-balance while occupied, without the use of a kickstand, leg, or tripod.
- It's like walking on a wheel and it makes the Segway its bitch.
I see they're pretty much all recumbent bikes, and that's pretty cool and all, and 81 mph is impressive and stuff, but I think maybe they're perhaps suffering from a lack of imagination. Based off the common usages of "Solar-Powered" and "Diesel-Powered", would it be safe to assume that Human-Powered could also mean Human-Fueled?
Or should I read the fine print before entering the contest?
The enemies of Democracy are
The cop (also riding a bike) could put a red light on his helmet and ring his bicycle bell as a siren... *ching ching* *ching ching*
Very intimidating...
And where would he put the suspect after he's caught, in the basket?
Developers: We can use your help.
The bitch seat? If you've just been caught by a bicycle cop, I can't imagine a more fitting place for you to sit.
There goes my plan for a hamster powered car entering the race.
Knowledge is power. Knowledge shared is power lost.
This is the longest, paved, straight, flat stretch of road that the organizers are aware of, in the US. Also, Nevada lets them shut it down for certain time windows for the race.
If you do the race on a banked racetrack you can get an advantage from the wind where you use the bike fairing as a sail. That wind assist is hard to calculate and factor out of the final time, while a small headwind or tailwind on a straight course is easily mathematically removed to be able to equalize the results.
And as you tread the halls of sanity, You feel so glad to be, Unable to go beyond. I have a message, From another time..
Actually, recumbents are just fine on hills, they just use different, rather untrained muscles - it takes time to get these into shape. Human power production and biomechanics are my area of study, and I've just finished a project developing a human-powered utility vehicle. It is truly amazing what you can do with 150 watts of power and some creative design.
I'd really like to see recumbents become more mainstream here in the US. They can make riding a lot more pleasant, and can make trips of up to 20-30 miles feasible for many people who thought otherwise. With the small market penetration though, they're in a vicious circle of high cost (typically >$1.5k). You can see my HPUV in action here.
Quiz: True or False -- On a scale of 1 to 10, what is your middle name?
Am I the only one that thought, "Holy Shit!" at 81mph?! On flat ground? On a bike?
I've never broken 40 letting my fat ass drag me downhill on a roadbike - I can't imagine what it's like to be able to propel yourself at 80mph with your feet.
Mod my comments down. It'll be fun.
Putting a UCI-class rider in one of those things would be great to see. The speeds would be off the charts. That would be the quickest end to your pro career. Much worse than getting caught for doping.
There are articles of agreement between IHPVA and UCI and, over the years, many UCI-class riders have ridden in hpv's (at HPV events)--so there is no "political" problem.
The problem is teaching a rider how to do a flying 200 meter speed run--it is not like a normal bicycle because the gearing is so much higher. Acceleration is very slow at higher speeds and the rider has to learn to accelerate carefully over several minutes. The goal is to pick a pace so that you exhaust yourself (run out of breath!) just as you enter the timing traps. Bottom line--just putting a strong rider into an hpv will not guarantee record speeds, it takes practice and thought.
I didn't see it mentioned in the summary, but world speed record holder Sam Whittingham's bike was designed by a Bulgarian sculptor, Georgi Georgiev, who is not an engineer. The bike was not designed from computational fluid dynamics, or other modern engineering techniques. The design emerged from the brain of Mr. Georgiev; he designed the bike to "hide from the air", while providing Sam Whittingham with just enough space to pedal comfortably.
I have always been amazed that Sam Whittington and Georgi Georgiev have been able to consistently beat teams with engineers and batteries of computers with advanced aerodynamics software. Mr. Georgiev is something of a genius.
This and no other is the root from which a tyrant springs; when first he appears as a protector - Plato (423 to 327 BC)