# Pump foil simulator

**URL:** <https://forum.progressionproject.com/t/pump-foil-simulator/13917>\
**Category:** Uncategorized\
**Tags:** science\
**Created:** [January 19, 2026, 10:52pm UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917 "2026-01-19T22:52:45Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Leebonjames](https://avatars.discourse-cdn.com/v4/letter/l/82dd89/32.png) [@Leebonjames](https://forum.progressionproject.com/u/Leebonjames)\
**Post date:** [January 19, 2026, 10:52pm UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917/1 "2026-01-19T22:52:45Z")

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> **[Pump Foil Simulator (Angle Telemetry)](https://lsegessemann.github.io/foilphysics/?utm_source=ig&utm_medium=social&utm_content=link_in_bio&fbclid=PAZXh0bgNhZW0CMTEAc3J0YwZhcHBfaWQPNTY3MDY3MzQzMzUyNDI3AAGneQgTImeHAXV1Y091-AC1aUnckxNSaq2N5oAgI2Y0pAn_zUnLSkZBSDrIo3Y_aem_zvcsZBiU2kw2PflsqEyCqA)**

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**Author:** ![Paul](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.progressionproject.com/paul/32/12518_2.png) [@Paul](https://forum.progressionproject.com/u/Paul)\
**Post date:** [January 20, 2026, 8:44pm UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917/2 "2026-01-20T20:44:56Z")

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does this calculate speed?

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**Author:** ![FoilLight](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.progressionproject.com/foillight/32/2561_2.png) [@FoilLight](https://forum.progressionproject.com/u/FoilLight)\
**Post date:** [January 20, 2026, 10:11pm UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917/3 "2026-01-20T22:11:01Z")

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Makes me feel tired to watch that stick figure guy pumping for so long!

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**Author:** ![EmeryThrill](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@EmeryThrill](https://forum.progressionproject.com/u/EmeryThrill)\
**Post date:** [January 20, 2026, 11:11pm UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917/4 "2026-01-20T23:11:38Z")

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How should a rider use/benefit from this? (Not being critical, just curious how I should use it, e.g. Can this tell me if I have the wrong dock start foil? Choose a dw foil size?)

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**Author:** ![Tomate](https://avatars.discourse-cdn.com/v4/letter/t/e47c2d/32.png) [@Tomate](https://forum.progressionproject.com/u/Tomate)\
**Post date:** [January 21, 2026, 6:10am UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917/5 "2026-01-21T06:10:34Z")

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If I’m correct, you could type in your set up with weight etc and it tells you the most efficient way to ride it. For example which ampliute at which speed. Or you could change the parameter to a smaller stab / smaller front wing or a different angle of attack and see how that would play out. Or losing bodyweight vs gear weight 🙂 .

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**Author:** ![Tomate](https://avatars.discourse-cdn.com/v4/letter/t/e47c2d/32.png) [@Tomate](https://forum.progressionproject.com/u/Tomate)\
**Post date:** [September 11, 2026, 10:25am UTC](https://forum.progressionproject.com/t/pump-foil-simulator/13917/6 "2026-09-11T10:25:52Z")

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I was listening to the podcast here and really enjoyed it! It also made me understand better the benefits of this simulator.

The difference the body weight makes is amazing! 70kg - 220 watt vs 100kg 380watt pumping a 1300sqm front wing

Matt on foil - pump foil theory with folien

https://open.spotify.com/embed/episode/7BR0dIVzvbMz4x1NQitdSB?si=e0PNVqLUSxiOBiPgNWLwrw&utm_source=oembed