Wheelie / Stoppie physics

[Skyryder]

Balls Ive seen one being flipped

Bloody hell I have enough trouble trying to figure the counter steering equation let alone this wheelie/stoppee bullshit. So my postulatiuon on the subject is this.

Whhelies=clutch and throttle corordination..........or lack off.

Stoppeise= jobbeise (that's the polite word for shit)

Skyryder

[TwoSeven]

Nope. If all forces are balanced then there is no acceleration or deceleration. That includes ALL forces, so friction etc.

Hmm. what started the object moving in the first place then ?


I know what you are trying to say - just dont think it came out right is all

I think you meant: "Every object in a state of uniform motion tends to stay in that state unless an external force is applied to it" - which is newtons 1st law.

Newtons 3rd law - the equal and opposite one is a bit dodgy - applied to the above, if you push an object it will move (the action) - But it also means that you must have pushed against something else in the opposite direction which offered up more resistance (the reaction).

So both laws applied, if you push something - it will keep moving until something stops it

[Good Girl]

blah blah blah...........................drop the clutch open the accelerator figure it out for yourself

I been trying the whole wheelie Buzz, and found that as long as your awear of how much you have to accelerate you should be sweet.
If in doubt hit the back break and have controll.
STAY

I must admit first time I pulled a wheelie I was so stoked to get it up I ended up running after the thing, an ugly end for my poor 125

First time generally counteracts with a funk-up. But that's ok

[ducatilover]

And im not sure how the phisics of it all works, but i do know that if ya cant wheelie and stoppy your ghey.... and R1's must have good phisics coz they wheelie and stoppy great!!

yup r1's are kewl..... my gn could lift off in second if you changed with no clutch and gave it heaps [whilst nearly killing it]

[Mental Trousers]

mmmm, my turn.

With a wheel stand, if you accelerate there are 3 main forces acting on the bike - thrust, momentum and gravity. Genereally what happens is that the centre of gravity (CoG) is above that of the centre of thrust (CoT). When you have this situation, the thrust forward is below the momentum which is pushing back. This offset of the CoG and CoT produces another force - Lift. Once Lift is greater than Gravity, the front end leaves the ground and you solo down the road like some sort of god.

A stoppy is the same but opposite - the thrust is backwards while the momentum is pushing forwards. Same thing, just a mirror.

What happens with the sprockets and chain is different. The front sprocket is trying to pull the chain forward at the top. The rear sprocket is trying to resist the chain being pulled, also at the top. Now because the centre of both sprockets is offset from one another, this again produces another force - that of lift at the front sprocket. So the front sprocket will try to climb, adding to the lift produced in the paragraph second above this one.

[Big Dave]

Regardless of what they climb - Some are easier to get up than others.
Stretch is a legend.

[ducatilover]

Regardless of what they climb - Some are easier to get up than others.
Stretch is a legend.

holy mutha fuken moses sack. :spudwhat:

[ducatilover]

mmmm, my turn.

With a wheel stand, if you accelerate there are 3 main forces acting on the bike - thrust, momentum and gravity.

momentum? aint that the same as thrust? hang on no.....okay i'm good cary on...



but does momentum act upon an object? isnt the momentum the result of the forces applied?

[T.W.R]

its about balance & feeling the bike

this ones a fairly impressive stand-up

[Mattyc]

Only way I'll ever lift the front of the RF is with a crane... and a big one at that!

BWAAAAAAAAAAAAAAAHAAAAA ROFL COPTER

[Mattyc]

. Now because the centre of both sprockets is offset from one another, this again produces another force - that of lift at the front sprocket. So the front sprocket will try to climb, adding to the lift produced in the paragraph second above this one.

WT was right AUU

Chuck Norris could wheelie an RF 900

! can wheelie my zx9, its a bit of a heffer tho - havent tried any intentional stoppies yet, the mx bike is fun to do them on, specially the mrs bike

[bugjuice]

crash harry, why the hell are you on about the moon now?


wheelies ain't hard to do, just hard to refine. Go play wiv yerself and find out.

[MisterD]

Newtons 3rd law - the equal and opposite one is a bit dodgy - applied to the above, if you push an object it will move (the action) - But it also means that you must have pushed against something else in the opposite direction which offered up more resistance (the reaction).

So both laws applied, if you push something - it will keep moving until something stops it

This is always something that confuses people, action and reaction means if you push something then it pushes back at you equally. So if you push against something which cannot move, you will slide backwards, see?

[Hitcher]

its a bit of a heffer tho

It's a bit of a heifer though [Courtesy of Hitcher's Editing Services, a wholly-owned subsidiary of English As A First Language Ltd]

[Smorg]

MOOOOOOOOOKKKKK!!!!!!!