aston martin vs jet powered skater in top gear..

General chat from around the world

Moderator: Traffic warden

logicalguy
Wannabe
Wannabe
Posts: 166
Joined: Mon Jan 25, 2010 6:00 pm

aston martin vs jet powered skater in top gear..

Postby logicalguy » Thu Aug 11, 2011 5:28 pm

Dunno if you ppl saw this already http://video.uk.msn.com/watch/video/episode-4/12grayorx?from=video_module

Now I'm not a top gear enthusiast, but when I saw this on the msn homepage I couldn't resist clicking on it. It starts 1.00 onwards for about 5 mins, but you have to go through about 3 1/2 mins of yakking before they actually introduce the skater. The jet pack looks a pretty impressive piece of kit, I must say..

logicalguy
Wannabe
Wannabe
Posts: 166
Joined: Mon Jan 25, 2010 6:00 pm

Re: aston martin vs jet powered skater in top gear..

Postby logicalguy » Tue Aug 16, 2011 3:01 pm

Hmm I wonder if the same can be done with coke and mentos..

PeterC
New school
New school
Posts: 3271
Joined: Mon Feb 23, 2004 6:05 pm
Location: Amazingstoke

Re: aston martin vs jet powered skater in top gear..

Postby PeterC » Sat Aug 20, 2011 10:34 am

logicalguy wrote:Hmm I wonder if the same can be done with coke and mentos..


Yes, but with reduced thrust I'd think (and no I havn't done the maths, just guessing.)

<pedant>and that would be a rocket rather than a jet, but it's not like the skates would know.</pedant>

Okay, googled a useful looking mentos/coke seems about 2lbs/bottle is your best bet, (turns out hot coke and nozzle shape is the key), and you won't get that for long.

"intial exhaust speed is 22.5-feet per second. That sounds fast but converted to miles per hour it's only 15.3 mph. Still, it accelerates to that velocity in only 0.2 seconds."

logicalguy
Wannabe
Wannabe
Posts: 166
Joined: Mon Jan 25, 2010 6:00 pm

Re: aston martin vs jet powered skater in top gear..

Postby logicalguy » Tue Aug 23, 2011 11:57 pm

Hey, very impressed with your analysis. Rocket, jet, whatever, as long as it provides necessary momentum :p
Where did you get your data from?


Return to “General skating”

Who is online

Users browsing this forum: No registered users and 5 guests

cron