Hi guys New to the sport when I am standing up on board powered up about 22 knots board lifts up and goes down like a (Dolphin) up on foil and straight down My feet are placed where the foot straps would go I have a 5 foot jp Xwinger and 940 ses axis on a 750 mast with a 5;5wing I weigh 70 kgs and the mast is in the middle of tracks Cheers your advice would be greatly appreciated cheers Rich
Sounds like either you are potentially:
a) pitching nose up without enough speed then losing speed, or
b) breaching then falling down again.
I would try mast a few cm further back and when taxiing try to keep the board down until you feel it lift up due to water speed (as opposite to lifting by an aggressive change in pitch angle).
5.5 wing is a big wing for 22 knots, my guess is you are overpowered which will make it hard to control power
Sounds like you are stalling i.e. the angle of attack of foil is too high for low speed you are taking off with.
Take your time, build speed (fast walking pace). Gradually take weight off your front foot onto back foot, (increases angle of attack and therefore lift). If you move weight too abruptly or much you will get too big an angle and stall again. Once body of board is out of water flatten board and foil by shifting weight to front foot (ideally equal back and front). Reduce power by letting back hand out ( you need a lot less power to keep going compared to get going), or with 5.5m in 22 knots you'll have so much power you'll be lifted out of water or go so fast lift from foil will rise you out of water.
Just read previous comment, and agree
You are bringing the board up at too slow a speed. At this slow speed, induced drag is high, so what speed you have you quickly lose and the foil stalls.
Better is to keep your weight forward on your front foot and gain more speed whilst the board is semi-foiling (foiling but still just in contact with the surface). It's actually easier to learn like this for the first few runs as it's far more stable. Then once comfortable just try to lift the board a couple of inches off the water. At theses higher speeds there is less drag, and the foil is much more stable.
If it's impossible to keep the board nose down, then move the foil back in the track.
