Flex #s
Moderator: Barto
-
- PV Fan
- Posts: 46
- Joined: Sun Mar 06, 2005 12:14 am
- Contact:
Flex #s
this may be a dumb ?, but do the poles get more flexable as the flex# goes up, or is it the other way around. My last pole was a 18.5 and the one i just got today is a 18.7 i think.
- Robert schmitt
- PV Lover
- Posts: 1108
- Joined: Wed Sep 04, 2002 7:41 pm
- Location: Mount Vernon, WA
- Contact:
- rainbowgirl28
- I'm in Charge
- Posts: 30435
- Joined: Sat Aug 31, 2002 1:59 pm
- Expertise: Former College Vaulter, I coach and officiate as life allows
- Lifetime Best: 11'6"
- Gender: Female
- World Record Holder?: Renaud Lavillenie
- Favorite Vaulter: Casey Carrigan
- Location: A Temperate Island
- Contact:
-
- PV Fan
- Posts: 46
- Joined: Sun Mar 06, 2005 12:14 am
- Contact:
- rainbowgirl28
- I'm in Charge
- Posts: 30435
- Joined: Sat Aug 31, 2002 1:59 pm
- Expertise: Former College Vaulter, I coach and officiate as life allows
- Lifetime Best: 11'6"
- Gender: Female
- World Record Holder?: Renaud Lavillenie
- Favorite Vaulter: Casey Carrigan
- Location: A Temperate Island
- Contact:
PCHSpolevaulter16 wrote:really? that doesnt seem to smart to me!! wouldnt it make more sense for them to make a unviversal way of measuring flex#s and all of them use it. dang that blows
Some people agree with you, but the manufacturers all prefer to do it their way.
Really the manufacturers are all fairly close. The biggest differences are in short poles (12'6" and smaller).
You still can't compare flex numbers between lengths because of the way they flex the poles.
-
- PV Fan
- Posts: 46
- Joined: Sun Mar 06, 2005 12:14 am
- Contact:
- master
- PV Lover
- Posts: 1336
- Joined: Sat Feb 05, 2005 2:03 am
- Expertise: Masters Vaulter, Volunteer HS Coach, Former College Vaulter
- Lifetime Best: 4.36m
- Location: Oregon
rainbowgirl28 wrote:You still can't compare flex numbers between lengths because of the way they flex the poles.
Can you help me understand this please? For sake of discussion, if you grip near maximum on a pole that would be near where it is tested. And if you applied the same amount of force, the pole would bend a similar amount. But it would not be the same to jump on because you are gripping higher and a higher grip is as significant a change as a heavier pole. Does any of that make sense or am I all wet?
- Bruce Caldwell
- PV Enthusiast
- Posts: 1783
- Joined: Thu Feb 27, 2003 3:19 pm
- Expertise: It is all about Pole Vaulting. I even catch the competitors poles!
- Lifetime Best: 15'8"
- Favorite Vaulter: Kjell Issakson, Jan Johnson
- Location: DFW TEXAS
- Contact:
you might try to re-phrase that????
master wrote:rainbowgirl28 wrote:You still can't compare flex numbers between lengths because of the way they flex the poles.
Can you help me understand this please? For sake of discussion, if you grip near maximum on a pole that would be near where it is tested. And if you applied the same amount of force, the pole would bend a similar amount. But it would not be the same to jump on because you are gripping higher and a higher grip is as significant a change as a heavier pole. Does any of that make sense or am I all wet?
you might try to re-phrase that????
I love the PV, it is in my DNA
- master
- PV Lover
- Posts: 1336
- Joined: Sat Feb 05, 2005 2:03 am
- Expertise: Masters Vaulter, Volunteer HS Coach, Former College Vaulter
- Lifetime Best: 4.36m
- Location: Oregon
Re: you might try to re-phrase that????
ESSX wrote:you might try to re-phrase that????
OK. I will try a completely different way. I think you can compare a 13' 6" 165 lb rated pole and a 14' 165 lb rated pole. They are not the same, but they can be compared. Similarly I think you can compare a 13' 6" 17.6 flex Pacer FX with a 14' 17.6 flex Pacer FX. They are not the same, but I know how they are different so I know what to expect from each (in a relative sense.)
- Bruce Caldwell
- PV Enthusiast
- Posts: 1783
- Joined: Thu Feb 27, 2003 3:19 pm
- Expertise: It is all about Pole Vaulting. I even catch the competitors poles!
- Lifetime Best: 15'8"
- Favorite Vaulter: Kjell Issakson, Jan Johnson
- Location: DFW TEXAS
- Contact:
Ok now I know what you are saying and YES I agree
master wrote:ESSX wrote:you might try to re-phrase that????
OK. I will try a completely different way. I think you can compare a 13' 6" 165 lb rated pole and a 14' 165 lb rated pole. They are not the same, but they can be compared. Similarly I think you can compare a 13' 6" 17.6 flex Pacer FX with a 14' 17.6 flex Pacer FX. They are not the same, but I know how they are different so I know what to expect from each (in a relative sense.)
Ok Now I know what you are trying to say and agree.
The best way to understand length increase in stiffness is this way;
a 13'6"-165 holding 6" down from the top will be the same stiffness as a 14-165 holding the same distance from the top 6"
For every inch you move your hand down the pole gets 1 lbs stiffer on the 14-165 compared to the 13'6" pole.
Most all brands compared by weight model match pretty much across the board.
I love the PV, it is in my DNA
- lonestar
- PV Lover
- Posts: 1475
- Joined: Sat Oct 12, 2002 12:23 am
- Location: New Braunfels, TX
- Contact:
Re: you might try to re-phrase that????
master wrote:ESSX wrote:you might try to re-phrase that????
OK. I will try a completely different way. I think you can compare a 13' 6" 165 lb rated pole and a 14' 165 lb rated pole. They are not the same, but they can be compared. Similarly I think you can compare a 13' 6" 17.6 flex Pacer FX with a 14' 17.6 flex Pacer FX. They are not the same, but I know how they are different so I know what to expect from each (in a relative sense.)
Yes, they will require about the same amount of force to bend if you're gripping both poles say 6" from the top, BUT, where people f*** this up is that they don't realize that jacking their grip up to the same distance from the top on the next length f*** up the whole pole-speed equation. Even 1 inch of grip changes the pole-speed dynamic in a jump, and when moving to the next length, you should grip the same height from the BOTTOM of the pole with your top hand, or like 1" more. If you just jack your grip up 6" to a foot, you're asking to get your dumb a** spanked back down on the runway.
Any scientist who can't explain to an eight-year-old what he is doing is a charlatan. K Vonnegut
Return to “Pole Vault - Equipment”
Who is online
Users browsing this forum: No registered users and 10 guests