Comments on: Episode 22: Boom-Lift Catapult, AC vs. Windows down

By: Marius

Marius — Mon, 26 Mar 2012 01:06:28 +0000

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By: Robert-Alan

Robert-Alan — Sat, 24 Dec 2011 02:39:08 +0000

They tested a couple of these in later episodes.

By: smith brown

smith brown — Wed, 12 Jan 2011 12:17:09 +0000

Good Day..This is SMITH BROWN,I want to order for Electric Boom Lifts store. We provide Electric Boom Lifts . that you have in your shop.I want you to get back to me with the price including taxes and I want to know do you accept Credit cards as your payment.Hope to hear from you soon.

Thanks for your Co-operation.

SMITH

By: Ken

Ken — Wed, 05 Jan 2011 04:14:19 +0000

the boom lift catapauly needed somethign to make it stop in mid swing for teh final experiment to get the desired results

By: Robert

Robert — Sat, 26 Jun 2010 23:02:57 +0000

Power is proportional to the cube of wind velocity. At 25% more speed the power almost doubles. Hence the 50 per hour transition point for their model of vehical.

By: Brent

Brent — Thu, 17 Jun 2010 18:37:30 +0000

Why didn’t they install an external fuel cell so that they knew exactly how much fuel was in the vehicle? Instead they just pumped out the fuel and then added fuel back to a tank in which there wasn’t any way to determine how much fuel was left when they stopped pumping. try it again with different type vehicles and try it with exact amounts of fuel.

By: The Vyrys

The Vyrys — Wed, 06 Jan 2010 19:27:16 +0000

I think the A/C conclusion is that if you got an a/c and want to use it, by all means don’t let the fuel efficiency difference scare you.
You paid for it, and the difference is pretty much negligible over the long term.

Paul Harvey had a story of a preacher who refused A/C on a car stating it was a waste of money at $300.
On the drive home in his new car, he was warm, so he rolled the windows down, a truck passed stirring up dust, causing him to sneeze and shoot his new dentures out the window. Another truck ran over them costing him $700.

G’day mates!

By: Danielle

Danielle — Mon, 06 Apr 2009 22:51:14 +0000

Appreciate the info guys, thanks

By: Eric

Eric — Fri, 17 Oct 2008 17:03:01 +0000

I think Zane makes a very good point and I wish this had been addressed by the mythbusters. I believe the vehicles they were using were fairly large both in physical size and engine. The AC unit in a car and SUV would be roughly the same size but the SUV has much more power. Therefore it would effect a small car much more then a vehicle with a larger engine. Also I don’t remember but were the windows all the way down? I don’t think many people drive 55 mph with all the windows wide open.

By: Steve

Steve — Tue, 26 Feb 2008 21:58:52 +0000

Thanks for revisiting this. Wind resistance increases with the square of speed, so it makes a huge difference whether you drive at city or highway speeds (the original test really simulated city speeds). On the opposite side, the air conditioner is going to cycle at more or less the same rate no matter what your speed so if you are going slower you increase the number of cycles.