Advanced pumping - aka how the pros pump

Fascinating, clearly knows his stuff. I wonder if we will see squared up stance instead of the surf stance. I wonder what other refinements. 4 hours is not particularly long once you get into extreme endurance stuff if the power output is relatively low.

Any idea what the power output is? Probably 150-200w? (w/kg is the better measurement?)

During a normal stage of the Tour de France, pro riders can pump out around 230-250 watts on average, which equates to burning about 900 calories per hour. But on some of the harder stages they can average over 300 watts

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Iā€™m really surprised that for this kind of endurance pumping we arenā€™t yet seeing occasional stance swaps. Seems so unbalanced on the body. We do it wingfoiling, why not pumping?

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Real question is would the scoot allow him to be more efficient? Swap feet, square stance, etc. Body mechanics possibly better if you can mix up the muscles used. Reduce the handle to a carbon fibre pole with a ball on topā€¦
CleanShot 2024-05-30 at 08.44.06

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Really like this thread! Building on the arms/no arms discussion, I think it does matter. This information on how to pump a bike was vital for my understanding:

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tldr on the arms thing?

Yess! glad to see this article catching on :slight_smile:

You need to raise your center of mass through the pump to generate speed. moving your arms either forward or backwards, moves them upward which helps generate speed.

Longer TLDR here: Foil pumping physics - Technique - Progression Project Forum

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Interesting. This image made sense, along with the explanation.

This is why I used to suck at pumping. You donā€™t want to extend your arms and legs when youā€™re on the steepest part of the down slope, but the most tightly curved part of the transition. Sometimes the difference in timing can be quite subtle, but if you have a long down-slope before the transition, it pays to be patient and push only once the ground starts to curve. Similarly, itā€™s the crest of the roller where you want the bike to come up towards you, not the steepest part of the up-slope

What can be applied to pumping if the same physics are at play?

Could we increase the effectiveness of the pump by doing full squat jumps? The limit is how quickly the foil can rise up below you. That is maybe why the heel lifts.

@Eriefoiler in your video linked above I can say that it seems like you are extending prematurely, ie youā€™re pushing down while the board is still going down at 3s in the clip. I guess that ties in with the foil doing a sine wave and you mistiming the extension while itā€™s still on the down rather than on the up

You donā€™t have to just push on the up. The idea is you need to push in the down through the transition and into the up. I.e the bottom of the sine wave.

Iā€™ll admit this video isnā€™t the best example of pumping, (It was taking several years ago) but if you watch closely you can see my legs continue to extend as the foil begins to rise.

Yeah no that wasnā€™t the point I wanted to make for you, just for others to get an idea of the mistiming illustrated.

The idea is you need to push in the down through the transition and into the up. I.e the bottom of the sine wave.

This is what I was getting at. If you get the timing right then it can be a short sharp impulse

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Something to add to this (from this image from Matt Costa), when you pump into waves, you must make sure to put the most effort into pumping at the peak of each wave, where there is maximum lift. You need to glide down the back of each wave.

I noticed I was doing this, but didnā€™t really realise what was going on until looking at this image. Watch someone good pumping out, and youā€™ll see they sometimes double pump, to get the peak of two bumps close together, and then otherwise do a steady pump to time their pumps with the peaks.

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Related pumping threads

I just want to ask, whatā€™s the advantage of the taller people on pumping to generate more speed? I know that tall people like me have difficulties with balance, but on pumping technique, will taller will benefit due to longer legs/limbs and leverage?

I canā€™t see height creating any advantages. This sport favors small lightweight riders.

The only height advantage Iā€™ve seen for taller folks have longer arms and can easily run bigger wings if thatā€™s your thing. Everything else is a battle against gravity.

Can you explain how swinging the arms back creates speed? In my head I feel like it would do the opposite. Disclaimer Iā€™m new and terrible at pumping

Swinging your arms back will help you get your chest forward which puts your weight over your front leg helping to drive the foil down.
A lot of beginner pumpers throw their arms up as they kick down on their back foot which tends to slow you down and stall the foil

Imagine pulling yourself out of the starting gate skiing. Youā€™re doing that. Just the gate is imaginary.

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Got it, basically chest forward is the end goal. Makes sense now

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Damn great analogy! Thanks!