Contact   Imprint   Advertising   Guidelines

Why are pump bases flat?

Forum for kitesurfers
frankm1960
Very Frequent Poster
Posts: 1229
Joined: Sun Feb 04, 2007 10:48 pm
Local Beach: -Bayshore, at the end sea st. on saint John's west side, bay of fundy.
-Saints rest beach, at the end of sandy point road, irving nature park, saint john, west side.
Gear: Kites: 12m LF Mig, 9m LF Mig, 5m SS Fuel
Boards: LF proof 151cm, Real Wind 144cm, home made light wind board 160 x 50
Brand Affiliation: None
Has thanked: 0
Been thanked: 0

Re: Why are pump bases flat?

Postby frankm1960 » Sun Mar 11, 2012 10:57 pm

consumer wrote:The fact is: our bodies do not move in a perfect vertical line when we pump. We actually move in an arc. It's not ridiculous to think that modifying the angle of the base might make pumping less awkward.

You guys have any idea how bonkers people go over a sliding spreader bar or a new safety leash?

This is simple question with an even simpler solution. Why are people so quick to flame?

Peter Frank described it perfectly.
I agree it's a bit awkward and probably depends a bit on your body somewhat.

Try this:

To remove most of the "arc" when pumping adjust your stance...
Adopt a similar stance as if you're doing a dead lift.

Hinge at the waist, back straight or even better arched inwards ever so slightly
(stick yer ass out there and keep your shoulders out there lol)

Basically you want to do a "mini" deadlift motion ensuring your knees don't extend past your toes anytime during the motion. Arms are hangin straight down and pushing straight down on the pump. You might have to toe in your feet a bit at first to get your hands past your knees in the beginning but with practice you shouldn't have to.

Make the glutes and quads do all the work while maintaining back posture.

You'll see with a bit of practice (it's easy) you'll eliminate most of the "arc" to the stroke and almost go straight up and down.

It's easy on the back and engages only the big muscles of the legs if you do it right.

Take the pump out and try it in the living room.... good work out...haha!

Hinge at the waist and bend the knees as you pump keeping that back straight or arched inwards if you possible.

User avatar
RideLow
Frequent Poster
Posts: 387
Joined: Fri Dec 23, 2005 1:30 am
Gear: Wipika Free air! <3
Brand Affiliation: Blue Waffle
Location: In the search for wind
Has thanked: 1 time
Been thanked: 8 times

Re: Why are pump bases flat?

Postby RideLow » Mon Mar 12, 2012 12:38 am

Just use the wank-o-matic pump that came with the kites back in the day..

Image

tomatkins
Very Frequent Poster
Posts: 1123
Joined: Sat Jan 10, 2004 11:53 pm
Has thanked: 0
Been thanked: 2 times

Re: Why are pump bases flat?

Postby tomatkins » Mon Mar 12, 2012 1:22 am

Pietro_2003 wrote:
KiteboardingTampaBay wrote:His only pumps on the downstroke and he says he loves it.
Good point. My back doesn't like the compressions of the upstroke.

Has anyone pulled apart a cheapo standard pump and seen if it is easy to disable the upstroke pump action?
Yes... it is very easy to do. First, unscrew the top of the pump and pull out the shaft and piston. Then pull off the little round flat rubber disc, on the top of the piston.... and put it all back together... that is all you need to do.

User avatar
davesails7
Very Frequent Poster
Posts: 2220
Joined: Sun Apr 01, 2007 7:36 pm
Kiting since: 2006
Weight: 75 kg
Local Beach: Virginia Beach
Style: Race
Gear: ML B3
R1V2 11. VMG 13, 15, 18
OR Mako 130x35
Brand Affiliation: None
Has thanked: 10 times
Been thanked: 22 times

Re: Why are pump bases flat?

Postby davesails7 » Mon Mar 12, 2012 1:39 pm

Doesn't almost every kite location have a downward slope leading towards the water? Mine do, so I just face towards the water when pumping.

I have seen some pumps that have a switch so you can turn the pump from double acting to single acting (no pump on the upstroke). Not sure what the brand was.

User avatar
finnkc
Medium Poster
Posts: 60
Joined: Fri Mar 09, 2012 5:34 pm
Local Beach: Southern Ontario Great Lakes
Style: freeride
Gear: 2012 Blade Fat Lady 17m
2012 Liquidforce Envy 12m
2011 Naish Bolt 10.5m
2011 Crazyfly Allround 145x41
2011 Naish Haze 141x41
Brand Affiliation: None
Location: Southwestern Ontario.
Has thanked: 0
Been thanked: 0
Contact:

Re: Why are pump bases flat?

Postby finnkc » Mon Mar 12, 2012 2:14 pm

I wonder why they don't go this route?

Image

If you could pump up a whole inflatable boat with one of these a kite should be no problem ... and these are more compact (flat).

ronnie
Very Frequent Poster
Posts: 4189
Joined: Sun Jul 24, 2005 6:39 pm
Has thanked: 31 times
Been thanked: 61 times

Re: Why are pump bases flat?

Postby ronnie » Mon Mar 12, 2012 7:29 pm

finnkc wrote:I wonder why they don't go this route?

Image

If you could pump up a whole inflatable boat with one of these a kite should be no problem ... and these are more compact (flat).
They are very awkward to use and slow. You have to wait for the spring to open it to refill with air, then when you pump, you are pumping against the spring and the pressure. In bare feet or thin soled booties, you have to press on the sharp edge, which is painful. It also tends to move around as you pump. I think you need to use one that has two chambers where the lower stage half pumps into the higher stage half to get the pressure needed for a kite.

User avatar
Rustas
Medium Poster
Posts: 175
Joined: Fri May 18, 2007 12:04 am
Local Beach: Salinelle, Capo Feto, Puzziteddu, Lo Stagnone, Agrigento
Favorite Beaches: Sicilia, Brasil, Venezuela
Style: ...trying to get one...
Gear: Torch 9, 10 and 12. Naish Sol, Aboards Z-series.
Brand Affiliation: I do believe in clean underwear.
Location: Sicilia and Sweden
Has thanked: 0
Been thanked: 0

Re: Why are pump bases flat?

Postby Rustas » Mon Mar 12, 2012 9:40 pm

:o
Now i have seen everything...

I can not believe this topic, sure if you have serious backproblems or weak ancles... or suffer from panicattacs when you bend down... then i understand you guys.

To inflate a normal 12, you spend about three minutes... if you take breakes... :lol:

This is a sport... at least the last time i checked.

For handicaped people there are sollutions... to open a can or reach for the top shelf.

I do hope that the guys around me could lanuch my kite without getting a hernia!
:bye:

Pietro_2003
Rare Poster
Posts: 20
Joined: Sun Jan 11, 2004 12:29 pm
Brand Affiliation: None
Location: Sweden
Has thanked: 0
Been thanked: 0

Re: Why are pump bases flat?

Postby Pietro_2003 » Tue Mar 13, 2012 9:48 am

tomatkins wrote:
Pietro_2003 wrote:
KiteboardingTampaBay wrote:His only pumps on the downstroke and he says he loves it.
Good point. My back doesn't like the compressions of the upstroke.

Has anyone pulled apart a cheapo standard pump and seen if it is easy to disable the upstroke pump action?
Yes... it is very easy to do. First, unscrew the top of the pump and pull out the shaft and piston. Then pull off the little round flat rubber disc, on the top of the piston.... and put it all back together... that is all you need to do.
Done. Now to see if it eases my herniated back while on the pump. ;)

SupaEZ
Very Frequent Poster
Posts: 2966
Joined: Sun Jun 12, 2011 12:47 pm
Local Beach: Space coast Florida 5th street
Favorite Beaches: One block from condo
Style: surfboard strap waves transitions
Gear: Boards quads & tri
Kites19-17-12-10-8-6-5 sqm
Has thanked: 0
Been thanked: 1 time

Re: Why are pump bases flat?

Postby SupaEZ » Tue Mar 13, 2012 10:27 pm

Looks like this post has gone FLAT

14ToeSide
Very Frequent Poster
Posts: 1023
Joined: Sun Nov 27, 2011 12:16 am
Favorite Beaches: Sandy Spit
Gear: North, Ozone, Naish, Flysurfer
Brand Affiliation: What ever works Best that year
Has thanked: 5 times
Been thanked: 20 times

Re: Why are pump bases flat?

Postby 14ToeSide » Wed Mar 14, 2012 1:01 am

I think I have FLAT missed the Point!!!! :desperado: :desperado: :desperado: :desperado: :desperado: :desperado:


Return to “Kitesurfing”

Who is online

Users browsing this forum: Baptiste_FR, bragnouff, Dave_5280, jhonson, KVL, macguffin, marinjo77, nothing2seehere, Peter_Frank, Sun, Vivo3d, Windwarrior and 398 guests