Select to expand quote
simonp123 said..Have you tried to flex one of the Phantasm masts?.....they are extremely stiff.
I've got the Phantasm Kite 633 with the 92 mast. I don't think it's particularly stiff at all. It's certainly not as stiff as my Lokefoil LK1 Performance (92cm) or my friends 95cm Starboard carbon mast. I'm not convinced it's any stiffer than the Slingshot Hover Glide 90cm aluminium mast either.
The flex is noticeable in the yaw direction and roll directions when the mast is in the board and I try moving the front wing. Perhaps they mean it's stiff compared to other kite foil masts. I'm hoping the 103W mast is much stiffer.
BTW, if you try flexing a foil mast with your hands out of the board it always feels stiff. The real test is to mount it in the board and try to flex it using the front wing for leverage.
You comments re mast stiffness got me thinking so I decided to do some testing. The mast and fuselage assy were bolted to a rigid structure and the area where the fuselage attached to the mast supported so only twist (yaw) is measured.
I only had access to kitefoil masts, but I guess that's the title of this thread so probably ok.
A 5 kg load was placed a set distance along the fuselage and a deflection measurement taken, loaded and unloaded. A flex test was also carried out, the 5 kg weight put on the mast 80cm from the mast base and the deflection measured.The 4 x 90cm + masts I tested are the 110 Levitaz, 101 Sabfoil, Phantasm 102 and an old Naish alloy 90cm.
The Phantasm is 30% stiffer in twist and about 20% stiffer in flex that the Sabfoil. The Levitaz came next but it is so fine at the end and 10cm longer it would alway suffer with twist. The Naish alloy is very stiff in twist, double that of the Sabfoil, only the Phantasm gets close.
Thickness and chord were measured at 80cm down the mast.
Phantasm 102 Twist 7mm Flex 10mm Thickness 13.7mm Chord 109mm
Sabfoil 101cm Twist 10mm Flex 12mm Thickness 13.92mm Chord 106mm
Levitaz 110cm Twist 16mm Flex 12 mm Thickness 12.5mm Chord 98mm
Naish 2018 Alloy 90 cm Twist 5 mm Flex 19mm Thickness 15mm Chord 110mm