Engineers Bringing Soap Box Racing Back Again

kpw10 writes "It appears that soap box racing has made a recent comeback as traditional races are getting big attention again. But at the same it is also adapting itself into a more modern engineering challenge: pro car designers from companies like Audi and BMW just last week raced in California's Extreme Gravity Series, with super aerodynamic racers reaching speeds of 44mph. Meanwhile on the east coast, industrial designers and artists competed in the Durham "Fall Classic Soap Box Invitational" with converted lazy boy recliners and enormous eight foot wheeled vehicles. I hope this is just a sign of what's to come!" We have come a long way since the 1930's.

Comments

CMU does this every year.

[SRMoore]

I don't really have a link to anything, but CMU has been having it's "buggy" race for several decades.

Cyclists do this regularly

[richg74]

In the end the fastest gravity racer was the Volvo entry, which hit 54 mph.

This sounds pretty fast, but road racing cyclists routinely achieve faster downhill speeds. I'm no Lance Armstrong, but I've gone down steep hills at 55-60 mph.

The difference is that a two-wheeled vehicle can negotiate turns at higher speeds than a four-wheeled one, because the two-wheeled vehicle turns by leaning. So it doesn't have to deal with anything like the same "sideways" forces at the tire / pavement interface.

I remember a couple of years ago watching some Tour de France footage with a (non-cycling) friend. It was one of the mountain stages. He asked, "Why do they have support motorcycles and cars?" I said, "Because the cars can't keep up going downhill through the curves."

only up to certain pt it seems, then opp is true

[somewhere in AU]

local perf car mag did technical measurements on track of fast m/bike vs fast car and while lap times where within a whisker of each other on this particular circuit it's WHERE they were faster and slower that showed interesting things.

cut to the chase: car was FASTER IN CORNERS than bike, and bike ACCELERATED faster in straights so they had different advantages in diff places.

I've driven the circuit the mag used and you could setup a high speed drift in off camber bend with a good car (AWD Turbo GT-R) that you would NEVER contemplate/do on a bike (been riding 25+ yrs).

So your m/bike faster in "normal" road situation up to a point but cars actually faster and faster capable, in corners.

cheers!

"San Francisco Illegal Soapbox Derby"

[billstewart]

Boingboing recently had an article pointing to a Flickr Photo Set about the Bernal Heights Illegal Soapbox Derby. Lots of silly cars, and the one rule is that every car is required to have a beer holder. Usually Halloween, sometimes other weekends as well.