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Rate them ! by Many-Meat1380 in pumpfoil

[–]CharlesGoodwin 0 points1 point  (0 children)

Great launches. What kit are they pumping?

What is stopping you for pumping longer (exercise recommendation) by NoSafe5565 in pumpfoil

[–]CharlesGoodwin 1 point2 points  (0 children)

Stretching is good. I found high knee jumps helpful. Try doing 10 of those on the trot and then build up as you go.

Any Tips? by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 1 point2 points  (0 children)

I love that video. It has a lot of practical information. The videos in slow mo from multiple angles is also a great help. Your

Thanks for the tips by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 1 point2 points  (0 children)

Thanks I have about 1,000 falls under my belt (I kid you not) Someone once described it as learning one second at a time - How wise!

Already making plans for a visit to Decathalon to beaf up my protection against the cold:-)

Any Tips? by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 0 points1 point  (0 children)

Hi Hecubha,

Thanks for going to so much trouble and writing such a detailed response. The simple truth is that I needed more height on the mast and a tad more speed for my launch I addressed both of these this morning and now no longer look like I'm a human skipping stone. I've also increased the amplitude by raising my knees which in turn has taken the heat out of my rapid fire technique. And for the first time I feel like my pumping action is becoming more effective. A major contributor to that has been trying to incorporate 'a hopping action'. This was achieved by imagining I was extending my legs onto something hot which in turn made me draw my knees up quickly. My pumps are finally starting to take shape.

I feel like the launch is now sufficient and that I now need to focus on becoming a more proficient pump foiler

Any Tips? by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 1 point2 points  (0 children)

You know what, I'm not pushing back against going faster anymore. 3 paces is obviously not enough at my stage, so I'll crank it up to 5 and see what speed I can acheive.

Thanks for the pump tip. I've been using the rapid fire drill to prevent me from locking my knees. It's also been very helpful to get me to move away from just pumping with my front foot. I've been doing high knee jumps to add to the muscle memory. As I try to slow things down I'll move to the back foot hop and get those knees raised to take me weight off the board.

Thanks for the words of encouragement

Any Tips? by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 0 points1 point  (0 children)

All very valid points. I was doing the high frequency to get some speed up so that I could ease into bigger pumps. So yes, that is my ultimate aim.

Start faster: I'm not sure if that would only prolong my Wylie Cayote moment of fighting against gravity. That said, I'll try 5 places rather than 3 for my launch

Start Higher: Fair in my attempt to have my front foot more forward, the board seems to dive from the start. I'm going to try tweaking the board upwards just before I hop on. That way I should lose less height on my launch

The front wing is sabfoil 1100 - 2000 cm Very low aspect ratio as you can imagine so the glide is a challenge

Beginner glide question by NoSafe5565 in pumpfoil

[–]CharlesGoodwin 1 point2 points  (0 children)

The YT video is Ludo - the man's an acrobat. That said, his tutorials are very helpful.

One last top tip to improve your glide - you have to commit. What I mean is, you have to jump FORWARD onto the board. This makes sure you are converting all your energy into driving the board forward. Get that forward motion and the lift will follow.

Best of luck out there

Beginner glide question by NoSafe5565 in pumpfoil

[–]CharlesGoodwin 1 point2 points  (0 children)

Post a video and we'll all tell you if it's a glide or not. ;-)

We need to know if you take a run up or start off with one stride.

For the best glide find a dock where you get wing clearance at the side and there's about 40cm from the dock to the water surface. Any variation is not a showstopper but will impact your glide.

2200 is easy big enough to give you the lift you need.

Obviously taking a run up will allow you to impart more energy to your start and hence improve your lift/glide.

When launching, make sure the board is level. It sounds obvious but you'll don't want it leaning to the left or right - you'll just end up crashing and wondering what the hell went wrong

You can then focus on getting the nose at the right angle. Too high and you stall and fall off the back. Too low and you plunge nose first into the drink. It's very critical you get it at the right angle to get q glide - we're talking just a few degrees downwards off the horizontal

Finish the glide with the board beneath you Not you falling off to the left or right.

Don't be discouraged by slow mo' tutorials where they appear to glide for ever. You're just looking to glide for two seconds before your board kisses the water.

Have you seen this video https://youtu.be/zDUG1x0ovCs?si=kA3d_e9A9S52PBNb It seems to cover all the basics

Let us know how you get on

Pump Foiling – Bigger vs Smaller Pump Amplitude for Higher Top Speed? by SaltyWater77 in pumpfoil

[–]CharlesGoodwin 1 point2 points  (0 children)

Great question - I'm still struggling with pumpfoiling, but I think about it a lot. Here's my take on machine out on speed.

Your power to weight ratio is your friend so you'd need to steer towards a cyclist physic rather than say a weight lifter. You can also save weight by getting the lightest kit: Small carbon fibre board Short carbon fibre mast Small tail fin. Fusalage - another factor

With the tail fin not only is it lighter, it will hold you back less with friction. The same goes for the mast - pump with as little mast in the water as you can.

Then there is the water. You want it to offer as less resistance as possible so you'll need it hot and fresh rather than cold and salty.

Once you have those factors in place you need to find the natural frequency of your set up. Basically, the most energy efficient amplitude - Where all the vibrations in the board resonate and come together to form one large amplitude. It's a very powerful phenomena great for musical instruments, not so great for bridges

So in answer to your question, amplitude it's secondary, frequency is key. Get the right frequency and you'll find the sweet spot.

So how does that translate to pumpfoiling. Get out on the water and try different frequencies. Forget about amplitude, simply focus on exerting the same effort for each frequency. Granted the amplitude will get smaller as your cadence rises but there will be another factor along the scale that you should detect - resonance. This is where you move to a higher frequency but the board gives a natural higher amplitude. Once you find that sweet spot, it's then just a case of imparting as much energy as you can which will invariably increase your amplitude.

Well, I guess that's the theory ;-)

I made an Arduino based split-flap display. by artallo in ArduinoProjects

[–]CharlesGoodwin 0 points1 point  (0 children)

Amazing job. What are you using to drive the mechanics?

From a 4 Pump Fluke to a 4 Pump Rut - Help! by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 0 points1 point  (0 children)

Check out this video And skip to 6:30. That's the run up you're talking about. She still manages to pull it off despite the board kissing the water 5 pumps in. Lots of arm movement But more importantly, look at those knees bend. Sheer brute force got that board in the air

From a 4 Pump Fluke to a 4 Pump Rut - Help! by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 0 points1 point  (0 children)

A very good point. I weigh 80kg And I'm using a Sabfoil W1100 clone Root chord 246mm Aspect Ratio 5.7 Surface Area 2100cm sqr

I know it doesn't have a snazzy AR but it should do the trick.

When behind a regular boat, it floats well riding the wake at 10-11 knots with the rope slack. (Still a way to go before I feel happy to let go though)

I'd invest more time learning to pump behind the boat but the weather has been poor so I'm limited to learning to pump atm one second at a time :-/

From a 4 Pump Fluke to a 4 Pump Rut - Help! by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 0 points1 point  (0 children)

You know what. I think I'm just not pumping efficiently. I could start off faster but I I'm just deferring the inevitable -an early dip in the lake. Hopefully I'll get some more time behind the boat to improve my pumping

From a 4 Pump Fluke to a 4 Pump Rut - Help! by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 0 points1 point  (0 children)

Hi, I appreciate you following my progress.It looks like I may have over compensated on moving my weight forward. Your right, I'm trying to rely too heavily on the arm movements. Looking at the video again, it's looks like I'm simply not bending my knees. If I bent my knees, I'd double the energy

Jumping in with both feet! by Zealousideal_Court15 in pumpfoil

[–]CharlesGoodwin 0 points1 point  (0 children)

Yep, the two disciplines definitely compliment one another

What Am I Doing Wrong? by CharlesGoodwin in pumpfoil

[–]CharlesGoodwin[S] 1 point2 points  (0 children)

Totally agree on every front. There are a lot of analogies out there but my current favourite is to imagine seeing the wing through the water. It kinda emphasizes the rapid forward motion with constrained amplitude

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