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Losing the front on the power.

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yodagoat
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PostPosted: 23:49 - 19 Dec 2014    Post subject: Losing the front on the power. Reply with quote

Ron Haslam once said you can't lose the font on the power. My mate thinks you can. I'm more incined to believe Ron, and the physics seem to point to it being hard to lose the front on the power.
What's everyone's thoughts?
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G
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PostPosted: 23:56 - 19 Dec 2014    Post subject: Re: Losing the front on the power. Reply with quote

Have done at Lydden and wasn't the only one that day. Seems down to a a rather old surface that needed renewing.
Coming out of the corner, winding the power on and the front gave way (definitely was the front.)

Maybe I should have had my weight further forward to keep more weight on the front.
Or maybe further back to keep more weight OFF the front Smile.
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ws4936
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PostPosted: 00:38 - 20 Dec 2014    Post subject: Reply with quote

I'm with G on this. Power on makes the front light, and if the conditions aren't right, you will lose traction.
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Old Git Racing
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PostPosted: 00:43 - 20 Dec 2014    Post subject: Reply with quote

How many high sides have you seen at Paddock hill at Brands? Course you can loose the front under power given the circumstances. Tell your mate to go out and do it, then give a judgement.

OGR
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covent.gardens
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PostPosted: 00:54 - 20 Dec 2014    Post subject: Reply with quote

If we're talking about acceleration whilst cornering then I can easily believe it. The front only needs to raise up or slip a little to cause a problem.

Accerating in a straight line? No. Not unless you let the front raise and put it down crooked or something stupid like that.
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Ariel Badger
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PostPosted: 01:18 - 20 Dec 2014    Post subject: Reply with quote

I lost the front putting the power on a bit early coming out of Triangle at Loton Park, hit a bump and had a full tank slapper.
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barrkel
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PostPosted: 01:34 - 20 Dec 2014    Post subject: Reply with quote

More power means weight is rear biased and the front has less traction. But less weight on it also means you're relying on it less to keep your line; it is possible to go around a corner on one wheel, albeit not with a lot of control. So if you have enough traction on the rear, and you're in a steady curve not needing steering, more power should result in a wheelie, not losing the front.

See e.g. Hayden at Laguna Seca 2011, photo on this page: https://daviddilworthdesign.com/design/racing-motorcycle-wheelbases-are-way-too-short/

If you want to use the front to do something extra, like change direction (e.g. steer upright), or brake, then you're stuck, however. Too much power (so, too much weight transfer) and there isn't enough traction for steering as well, and the front may easily slip.

A high side from cornering is normally the rear losing then regaining traction. Rear of bike starts overtaking, then grips and flips.
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yodagoat
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PostPosted: 02:23 - 20 Dec 2014    Post subject: Reply with quote

barrkel wrote:
more power should result in a wheelie, not losing the front.
.


This and the photos like the one of Hayden is what has made it one of out pub debates.
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Pete.
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PostPosted: 08:15 - 20 Dec 2014    Post subject: Reply with quote

I've lost the front plenty of times on the power. When I looked, there it was above my head....
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