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whats that thing called when the bike chucks u off?

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18aprilia
I don't get it?



Joined: 09 Oct 2004
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PostPosted: 14:33 - 07 Oct 2005    Post subject: whats that thing called when the bike chucks u off? Reply with quote

i cant think of the name for it? but it dont look cool when it happens it seems to chuck the biker off the bike, and also how does it happen and how can it be stopped?

anyone know what im going on about? i think its called highfly?
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Dark
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PostPosted: 14:34 - 07 Oct 2005    Post subject: Reply with quote

Do you mean highside?
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Visitor Q
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Joined: 30 Apr 2004
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PostPosted: 14:36 - 07 Oct 2005    Post subject: Reply with quote

Highside.

Rear wheel loses traction either by power or whatnot, then grips again when you are going sideways. Hence the flicking.

As for controlling it... Youd be lucky. Theoretically holding the power on smoothly and slide it through the corner i suppose. Take some doing.

Or let it grip and hope.

Wouldnt know, never had any highsides.
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Kirmit
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Joined: 28 Oct 2004
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PostPosted: 14:38 - 07 Oct 2005    Post subject: Reply with quote

I believe the term is 'Hghi-Side'
Caused when you lock the rear wheel, the rear wheel looses traction and begins to slide out to the side.
If you release the break the sudden momentum results in the bike kicking you off.
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G
The Voice of Reason



Joined: 02 Feb 2002
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PostPosted: 14:39 - 07 Oct 2005    Post subject: Re: whats that thing called when the bike chucks u off? Reply with quote

Highside. Because it throws you off the 'high' side, rather than a lowside, where the bike just loses tractions and goes down.


A highside happens when a bike loses traction then regains it again, whilst leant over.
This is often caused by chopping the throttle when the bike slides. Most rear wheel slides are self correcting - the best method to survive them is to keep on the power.
If you chop the throttle the rear wheel may suddenly regain traction while the rear is going in a different direction to the front. This sits the bike up or throws it the other way, often throwing the rider off.

So, rearwheel slides - keep on the power, unless you're going really silly, whatever, don't shut the throttle off completey.
More of a problem the more power and the stickier tyres you have.
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Kirmit
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PostPosted: 14:42 - 07 Oct 2005    Post subject: Reply with quote

I've locked my rear tyre a couple of times and had it swing out. The trick is 'DON'T RELEASE THE REAR BREAK'.

I've just applied gentle front break, until the bike straightened up. Then applied power and eased off the rear break.
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18aprilia
I don't get it?



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PostPosted: 14:44 - 07 Oct 2005    Post subject: Reply with quote

i just wanted to know cause it almost happend to me when i was on my rs125 or tho i think i was very very lucky, thank god!
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Kickstart
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PostPosted: 14:48 - 07 Oct 2005    Post subject: Reply with quote

Hi

Trouble with a highside is that the natural reaction to the back end sliding is to back off the throttle. Unfortunatly this is just about the worst thing to do.

Reason they are so nasty compared to a low side is because the bike flicks the rider into the air. So rather than just falling about 4 feet to earth you are likely to fall from a far greater height, probably landing on a random part of your body rather than the legs that are designed to take it.

All the best

Keith
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G
The Voice of Reason



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PostPosted: 14:50 - 07 Oct 2005    Post subject: Reply with quote

I don't know if a highside would have much effect if you lock the back wheel - with the brake etc. It usually happens when the wheel is spinning faster than the front wheel - thus is less likely to happen badly on lower powered bikes.
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Andy99
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PostPosted: 15:01 - 07 Oct 2005    Post subject: Reply with quote

You can still fly over the highside from sliding the rear due to too much rear brake but it's harder to do than highsiding due to too much power being put down. The back has to come round quite a bit before it spits on the brake unlike when due to power when it doesn't have to slide that far.
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Kickstart
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PostPosted: 15:05 - 07 Oct 2005    Post subject: Reply with quote

Hi

Just a bit of thinking, and far from a fully formed thought.

If you are leaning over and the back end slides such that you are using something towards opposite lock, is the tyre pushing you in an odd direction? Such that when you back off the throttle a touch and it regains traction then the back wheel pushes the bike quite violently into the corner.

All the best

Keith
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Walloper
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PostPosted: 15:16 - 07 Oct 2005    Post subject: Reply with quote

Jargon:
A Highside
Rear wheel slips,
Grips,
Sudden grip induces rapid compression of rear shock.
Rebound of shock throws the bike up and anything not holding on tight enough OFF Sad

Downside
F'cking usually expensive/painfull Sad
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Andy99
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PostPosted: 15:29 - 07 Oct 2005    Post subject: Reply with quote

Kickstart wrote:
Hi

Such that when you back off the throttle a touch and it regains traction then the back wheel pushes the bike quite violently into the corner.


Yeah i think it does.

If you think of the classic highside...rear slides,grips,spits rider high up and over the now upright bike onto tarmac/grass you don't seem to get as many of them now (at GP level) compared to the late 80's and early 90's.
These days i seem to see more of the small slide,grip small spit that throws the rider up off the still leant over bike in a sort of high low side if you get what i'm trying to explain.
It looks like as the bike is still at a high lean angle when the tyre grips and the shock extends it spits back along the direction it's come from towards the inside of the corner.
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Kickstart
The Oracle



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PostPosted: 15:55 - 07 Oct 2005    Post subject: Reply with quote

Andy99 wrote:
If you think of the classic highside...rear slides,grips,spits rider high up and over the now upright bike onto tarmac/grass you don't seem to get as many of them now (at GP level) compared to the late 80's and early 90's.


Mmm, thinking about it I think you are right. Certainly seemed to be a lot of very violent highsides in the 500cc class in the early 1990s.

All the best

Keith
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deputy
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PostPosted: 16:56 - 07 Oct 2005    Post subject: Reply with quote

Is a tank slapper the same thing as a highside then?
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Flip
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PostPosted: 17:22 - 07 Oct 2005    Post subject: Reply with quote

deputy wrote:
Is a tank slapper the same thing as a highside then?


No. A tank slapper is cause by the front end going light due to harsh acceleration.
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Walloper
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PostPosted: 17:32 - 07 Oct 2005    Post subject: Reply with quote

You had to get the answer from a CLOWN????? Laughing
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