"LOW BEND VS HIGH BEND"

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Bruce Caldwell
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"LOW BEND VS HIGH BEND"

Unread postby Bruce Caldwell » Sun Jul 27, 2003 10:30 am

"LOW BEND VS HIGH BEND"

PVJunkie wrote:UMMM.........High bend or low bend)

............well either is not the most effective way to bend a pole. FULL is where it is at, lower (equal) demands on any one area of the pole, less likely to break AND smoother in all aspects. If you demand great amounts from one area of the overall length of the pole and little to none from other areas of the pole you are not fully utilizing the poles potential. SO if a manuf. is designing a pole that lends itself to bend higher or lower there must be a reason. The Skypole has a lower sail thus some say it is a pole that bends low.........NO it is a pole for athletes that load a pole low irregardless of the design (beginners - intermediate vaulters). The more advanced need a pole they can grip as high as possible on and still roll it over. That, in a perfect world, is a pole that bends FULL because the distance from the tip to the top hand is as short as it gets without demanding a large area of bend be isolated into only the top or bottom of the pole which is usually forced there by the poles design (low sail = high bend). It forces the majority of stress into the weakest areas of the pole. So how do you not break that pole.........grip lower and use a stiffer pole.........well that goes against what you are trying to accomplish, grip as high as possible on as big a pole as possible.


Bryan Carrel
Degree = P.E. (go figure)


[color=blue][b]Could you give us a little more info on your comments. As it stands, I disagree with what you say; however I believe you may be referring to another aspect of the pole and your statement might be accurate.

As I read this and comprehend:
This is how we see it

If a sail is lower it will be stiffer in the butt, the energy stored into the pole would not bend the pole as much in the lower portion of the pole due to the design shift from its previous position. (thus a higher bend not a lower bend????)
If you lower the sail and tighten the angle to a point you will still have a pole that will be stiffer in the butt and will not bend low unless loaded incorrectly. (All things being equal)You would get a pole that is easier to “bend overâ€Â
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Re: "LOW BEND VS HIGH BEND"

Unread postby lonestar » Sun Jul 27, 2003 9:33 pm

Sounds like that lady on "The Sunday Night Sex Show" :devil:


ESSX wrote:"LOW BEND VS HIGH BEND"

PVJunkie wrote:UMMM.........FULL is where it is at...AND smoother in all aspects. If you demand great amounts from one area of the overall length of the pole and little to none from other areas of the pole you are not fully utilizing the poles potential...The more advanced need a pole they can grip as high as possible on and still roll it over...the distance from the tip to the top hand is as short as it gets without demanding a large area... be isolated into only the top or bottom of the pole which is usually forced there by the poles design...So how do you not break that pole.........grip lower and use a stiffer pole.........well that goes against what you are trying to accomplish, grip as high as possible on as big a pole as possible.
[/size][/i]



it will be stiffer in the butt...as much in the lower portion of the pole due to the design shift from its previous position.

If you ... and tighten the angle to a point you will still have a pole that will be stiffer in the butt... unless loaded incorrectly. (All things being equal)You would get a pole that is easier...positioning you better to receive energy return with the penetration needed... The loss of energy you are referring to I believe is energy upward...Thus creating a need to touch...(which is illegal) or striking...possibly on the way down.

Very high...with far too many...under your belt and wasted efforts. We have seen a lot of this in the past 10 years...
We have...poles with the utmost engineering, the best engineered design possible that only
SUPERMAN or LARA CROFT could manage (SMILE)

Sometimes the most engineered...pole will not work for those in the field (as of yet) even though the tests and concepts show it to provide the highest performances..

For those who do not know what a...looks like it is with us a...before rolling it on...

When rolled on to the...and on the previous layers of construction, the large side is placed on, and the rest rolls on providing the specific design and load configurations as defined...in the field experience


A PICTURE OF...FOR ALL TO SEE

We try to give you this:

A full...looks like this Hope you are settting down when you view it LOL:
Last edited by lonestar on Mon Jul 28, 2003 1:58 am, edited 1 time in total.

zack

Re: "LOW BEND VS HIGH BEND"

Unread postby zack » Mon Jul 28, 2003 1:52 am

PACER HIGH BEND POLE JANS VAULTER


Sorry I'm gonna have to disagree. After looking at that pic of C. Johnson it looks more like a full bend then a high bend to me. Especially considering shes gripping down a bit. Just my two cents.

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optics

Unread postby Decamouse » Mon Jul 28, 2003 8:12 am

plus since you are not perpendicular to the plane of the bend you get an optics effect
Plant like crap sometimes ok most times

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Reply

Unread postby Bruce Caldwell » Mon Jul 28, 2003 10:00 am

We are assuming the comments by PV junkie have a typo?
As we all know that a lower sail design yields a stiffer butt.

[color=green][b]One could say the angle is causing an optical illusion. Of course I was there and all of Jan’s Girls bend the pole over.

We never have seen any of his girls vault with a pole that bends low and has a straight top.
He must have a good coaching technique because all the other vaulters at that meet had many poles that bent low and had a straight column.

It could be
· Proper take-off technique
· Properly fitted poles
· And or specially built poles? (They could even be cut-off poles? There are no facts to support this guess)

My point here is as follows: If you design a pole by engineering standards to be a perfect arch in the flex machine, that is not what you get in the field during use.

Why because the vaulter does not vault with his/her thumbs in the top of the pole.
OK they hold 3â€Â
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Unread postby dubjones » Mon Jul 28, 2003 10:05 am

This pole looks to be straight at the top (between her hands), and at the bottom as well. "Blown out in the middle" is what I would call this.
Dub

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Not bad

Unread postby Decamouse » Mon Jul 28, 2003 11:12 am

As for Jan's girls - I would say:
It could be
· Proper take-off technique
· Properly fitted poles

Jan has a ton of poles

As for the design and engineering - don't know who designs/engineers for a perfect arch in a flex machine - but it isn't here - also Skypole, Mystic, Carbon Mystic, Pacer FX and Carbon FX are all built slightly different and do not have the exact same sail piece, etc. design. Trying to fit the needs of many - which outways the need of one (paraphrases from what movie?)

Interesting is we test many ways including one that can vary vaulter height, and had placement spacing - Ya use as many tools as possible and then try to make good decisions to translate to real world usage
Plant like crap sometimes ok most times

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Bruce Caldwell
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reply

Unread postby Bruce Caldwell » Mon Jul 28, 2003 11:34 am

I am sure the readers of this site would love to see or hear about some of the results of the tests. It will help them to understand vaulting more.
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Bruce Caldwell
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I stand corrected by ZACk and DUB

Unread postby Bruce Caldwell » Mon Jul 28, 2003 12:37 pm

http://f2.pg.photos.yahoo.com/bc/essxsport/vwp?.dir=/ESSX+PICS&.src=ph&.dnm=Jan%27s+Daughter.jpg&.view=t&.done=http%3a//f2.pg.photos.yahoo.com/bc/essxsport/lst%3f%26.dir=/ESSX%2bPICS%26.src=ph%26.view=t

After looking at the jump from a differrent angle ZACk and Dub
I stand corrected.
The pole does bend over from crushing it and is stiff at the top and at the bottom.

Good Form though I must add.
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Unread postby PVJunkie » Wed Jul 30, 2003 10:36 pm

I just got off the road (9 hour drive from tulsa)..............what your forgeting about is irregaurdless of how you cut it (you photos) there is also the question of placement along the length of the pole. Centered, toward the top or toward the bottom. Then there is the issue of the sz, length, of the short side vs the overall length of the pole. Tomarrow, once I have had some sleep and can digest the comments I will try to post somthing semi intelligent.

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Sleep

Unread postby Decamouse » Thu Jul 31, 2003 6:46 am

Betcha his spelling improves - now he spells like an engineer - :devil:
Plant like crap sometimes ok most times

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Unread postby smokinvaulter1 » Thu Jul 31, 2003 1:58 pm

[/quote]I just got off the road (9 hour drive from tulsa)...............[/quote]

Hey You should of told me you was going to be in Tulsa I would of came down. Did you jump at Joes place? 9hours you was haulin on that trip.


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