I had another pump only session with the 1401, checking every bolts and added some thick plastic foil between the mast and the fuse. It was much better 
I still have issue with breaching on the 75 cm mast, but this is mostly rider issue.
The physical challenge is real 
but it’s really motivaiting me to get in better shape.
@macfly1202 thanks, as you know I’m mostly on the quick & dirty but fun aspect, this is my side project 
That’s great news. Glad you solved it. Looking forward to your next video clip 
@Bzhwindtalker it’s amazing that you find all that time for DIY and outdoor testing. I think it’s a mental barrier I can’t get over: taking the time to enjoy.
You’re kind of a role model for me, the one I’ve always wanted to be, and yet I’m a tinkerer who spent most of my teenage years in a workshop or teaching kids to sail. Go on! You’re very inspiring. And maybe if one day I get fed up making machine learning algorithms, I’ll take the plunge!
having some “fun” now with chatgpt and python script for pump foil session stats. I know you can relate @macfly1202 
Excellent !!!
Your goal with this script is to visualize low, med and high speed pumping segment ?
On a typical sessions, using a gps watch, it is not easy to know how many times and how long you are on foil. I also wanted to reliably track the max pumping time. I already did the segment extraction online in chatgpt, but I had not way to verify it. Now I can easily extract the best segments and total time on foil (here 10 minutes for a 60 minutes session). It is a work in progress, and very niche use 
Excellent !
For info Waterspeed app have this feature on web wiew- you configure foil speed and then it detect and mesure this. As jibe, tack … I use this for Wingfoil. Very good paid app. But doing by yourself is always better !
I prepared prints for another battery, but with pre-wired pogo 14 pin this time.
Spent another 30 minutes trying to solder the bare ones I have, but it is super hard/impossible, especially on a live battery (first one with trash cells)
I will be in south of france next weekend for 3 days with hotel on the beach so I have preparation to do, to have at least two “good” batteries, solve the antenna holding, tape is not durable/quick enough, make paddle remote holder, improve board leash/fix to life vest.
Had a session with only one battery, with the wing and the 1201. There was basically zero wind, I had already tried last spring with slightly more wind and it was more relevent that pushed me to also do the other feet forward, will be helpful if I want to parawing. I basically never winged apart from a few runs without Jibes or tack dialed.
The 1201 seems to work very well with the board and assist, felt solid as far as rigidity.
3rd battery I built for this setup, hopefully that will give me two “good” batteries now
Those cells are salvaged 30Q again, but were sorted for IR<15 mohm and higher resting voltage. I will try P28A next if needed. maybe with the DW board 35E would also work, have to check the IR VS those 6 year old 30Q.
Takes around 1h15 to build one pack. Aligment of the XT90 is not easy, I should make a jig for next batteries. Takes 175 gram of resin to fill up.
App also works for e-foil but the speed thresholds migth need adjusting. 13 starts and 18 minutes on foil, with zero pumping and dragging the wing around, not bad on 260 wh of battery
super intersting as always !
What is the red flat wire please ? never seen this before (nickel strip with heat shrink tubing ? )
Batteries look great.
Battery build with balance board wired up.
I will check in a few hours if the boards are working. Those are also salvaged, and having 2x6 board could cause Inbalance between both 6s strings.
Better would be to get a 12s one to make sure the whole pack can be balanced at once.
Made good progress on the GPX app!
But now hitting the limits of chatgpt to display html on the window instead of screenshot of the html maps. 500 lines in.
Reverted to the “normal” active balance board that I salvaged from a dead pack, 2 boards did not do anything.
This seems to work (led on when plugged), will check in a few hours.
Now have to look at printing the paddle mount for maytech, could not find the file online, anyone has a link or file?
Is James on the forum?
Edit : video from the other day no wind wing on Instagram:
Long weekend at sea prep underway
Prepared the board with antenna protected in Velcro, with velcro also on the board, to loose the tape.
Not pretty but will really simplify and make the antenna stronger.
Printed the paddle mount for both left and right hands, just in case. Received my carbon paddle that was still in my home town. 3 piece paddle, probably ok for some tests but a little limited and risk of breaking in the long run.
Balanced the two batteries using the active balancers, those old 30q cells are really all over the place regarding capacity, despite the sorting of IR and voltage. Ok for tests and dev but barely worth my time.
Packed 1201, 1401, 4m2 wing, boards (DW+pump), drone 
Next Imrpovement I see could be to have a double bolt setup where the controller box and the mast are independently mounted, to ease switching from pumping to motor and vice versa.
I use copper strip for power lines, it got much lower resistance.
The 1401 was not fast enough to surf.
Goal 4 battery per day for 3 days 
Paddle mount is not rigid enough, but only held it with zip ties as I could not find the right bolts. So I can not apply any paddle power while using the remote.
The set up looks awesome. Great to hear it’s all working out well.
What period swell was it? I’m surprised the 1401 was not fast enough. I can keep pace on a spitfire 1180 but this is in North Sea swells, max of 13 sec period.
