Wheelie / Stoppie physics

[Hitcher]

I Concurr!!!!!!!!!!!!!!!!!!!

As in "divide and concurr"? [Hitcher's tip du jour: to quickly check spelling of a word, type "define (whatever the word is)" into your Google search window and hit Enter. Or go to www.dictionary.com]

[Mattyc]

as in I conCURRRRRRRRRRR ! lol

:eyepoke:

[TwoSeven]

..........

Here

[Deviant Esq]

As far as how they work, I'd say that's been sufficiently explained. In some form or another

As far as how they look, here's a wee vid I found of stunt wheelies and stoppies (and a few drops as well!)



http://video.google.com/videoplay?do...2&q=motorcycle

[thehollowmen]

this thread has given me and a physics PhD here the best laugh we've had for a while :-)

kudos

[Marmoot]

this thread has given me and a physics PhD here the best laugh we've had for a while :-)

kudos

yea man. Those who argued about torque, traction and sprockets surely don't know about anything. To know the real answer to wheelies/stoppies issue you'd be better off asking to doctors and biologist. The real answer lies in your body (around your testicles)

[MisterD]

yea man. Those who argued about torque, traction and sprockets surely don't know about anything. To know the real answer to wheelies/stoppies issue you'd be better off asking to doctors and biologist. The real answer lies in your body (around your testicles)

You're just dispalying your own ignorance there Marmoot, a man as well read as you obviously are should know that when you get right down to it, everything is a branch of Physics....

[Marmoot]

You're just dispalying your own ignorance there Marmoot, a man as well read as you obviously are should know that when you get right down to it, everything is a branch of Physics....

Physics as in "let's get physical"?
That'd be true. As long as it involves human body and sexual organ, I'm in (preferably ones without testicular feature on it).

[MisterD]

"let's get physical"?

Olivia Neutron-Bomb, I rest my case.

[manuboy]

this thread has given me and a physics PhD here the best laugh we've had for a while :-)

kudos

I Concurr!!!!!!!!!!!!!!!!!!!

[dawnrazor]

This mightve been discussed b4, but i couldn't figure what to search on...

What actually causes wheelies / stoppies. Like i figure it's somehow about weight / balance / energy and momentum. I figure the "centre of rotation" that the bike moves around must become the axle in question?

But when does hard braking become enough to rotate the rear end around the front and the same for wheelies - when does hard acceleration become front wheel skyward?

Duh??

Okay you've got the "law of the lever" saying force, pivot, load, add to this some speed and weight transfer, and suddenly the load decreases and the force increases in the case of a wheelie or the oppisite in the case of a stoppie, if the lever is balanced before the other factors act on it.

the pivot is the fixed point