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Cavitation is just about pressure differences. Fast-flowing rivers can cause cavitation on rock surfaces, for example.Peter_Frank wrote: ↑Thu Jan 30, 2020 8:20 amCavitation is when working at extremely high speeds, above 50 knots
Nice! How about the speed of the M Pro? Is it possible to average +20 knots?Zamed wrote: ↑Thu Jan 30, 2020 7:26 pmI have both wings.
I don't like at all the freeride wing (712 cm2). It's not very stable and relatively poor performer at low speeds.
On the other hand, I'm totaly hooked on the M pro wing. It's perfect for my style of riding, which is carving and playing on swell waves.
The only downside for a beginner is that it's more technical to waterstart with a larger wing.
I think that it's a small price to pay, because once you get to handle it, everything else that you'll try will be much more easy to learn.
I've never measured my speed, so I won't get into numbers, but my feel is that the speed of the M pro is more than enough for freeride fun.GTC wrote: ↑Thu Jan 30, 2020 10:57 pmNice! How about the speed of the M Pro? Is it possible to average +20 knots?Zamed wrote: ↑Thu Jan 30, 2020 7:26 pmI have both wings.
I don't like at all the freeride wing (712 cm2). It's not very stable and relatively poor performer at low speeds.
On the other hand, I'm totaly hooked on the M pro wing. It's perfect for my style of riding, which is carving and playing on swell waves.
The only downside for a beginner is that it's more technical to waterstart with a larger wing.
I think that it's a small price to pay, because once you get to handle it, everything else that you'll try will be much more easy to learn.
It could maybe be better viewed as the momentum force of one molecule being water over comes the intermolecular force attaching it to another being water or your hydrofoil. Things are not straight in fluids, they are circular. Vortexes form next to other vortexes, and relative momentums could be much higher than you would imagine. I would think that turning is when these are at their greatest.Kamikuza wrote: ↑Thu Jan 30, 2020 10:24 pmCavitation is just about pressure differences. Fast-flowing rivers can cause cavitation on rock surfaces, for example.Peter_Frank wrote: ↑Thu Jan 30, 2020 8:20 amCavitation is when working at extremely high speeds, above 50 knots
This may be of interest to those with vibration issuesFlyboy wrote: ↑Sat Jan 18, 2020 4:11 pmfaklord wrote: ↑Sat Jan 18, 2020 3:21 pmI noticed gong now do a modified version of these wings https://www.gong-galaxy.com/en/product/ ... pro-clear/
One of the things they say is “ With this new range, we have added a hole to add a screw on top of the fuselage. The gain in rigidity is enormous. Nothing moves, twists or vibrates. It’s absolutely perfect.”
It sounds like one of the contributing factors to the vibration issues some people are experiencing is the rigidity of the font wing connection? Maybe it is possible to add a bit of packing or it may even be possible to drill an additional hole as in the new version?
Saw this post after I posted! The wing (original) has screws that just fasten the wing to the fuselage on one side. It seems to me that a longer screw that screwed all the way through the fuselage & through to a thread on the other side would be the best way to increase the rigidity of the connection. From what you are describing they have elected to countersink into the top of the wing & add a screw there. Presumably this could be retro-fitted?
One other thing: the screws that come with the foil seem to be relatively small/short. I wonder if this isn't a potential issue with the mast/top plate & mast/ fuselage connection?
I have to say that I haven't experienced any noticeable "vibration issues" in practice. However, there is some play in the front wind/fuselage connection, so drilling an additional hole on top seems like a reasonable thing to do.faklord wrote: ↑Fri Feb 14, 2020 7:33 pmThis may be of interest to those with vibration issuesFlyboy wrote: ↑Sat Jan 18, 2020 4:11 pmfaklord wrote: ↑Sat Jan 18, 2020 3:21 pmI noticed gong now do a modified version of these wings https://www.gong-galaxy.com/en/product/ ... pro-clear/
One of the things they say is “ With this new range, we have added a hole to add a screw on top of the fuselage. The gain in rigidity is enormous. Nothing moves, twists or vibrates. It’s absolutely perfect.”
It sounds like one of the contributing factors to the vibration issues some people are experiencing is the rigidity of the font wing connection? Maybe it is possible to add a bit of packing or it may even be possible to drill an additional hole as in the new version?
Saw this post after I posted! The wing (original) has screws that just fasten the wing to the fuselage on one side. It seems to me that a longer screw that screwed all the way through the fuselage & through to a thread on the other side would be the best way to increase the rigidity of the connection. From what you are describing they have elected to countersink into the top of the wing & add a screw there. Presumably this could be retro-fitted?
One other thing: the screws that come with the foil seem to be relatively small/short. I wonder if this isn't a potential issue with the mast/top plate & mast/ fuselage connection?
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