Lp was one of the first windfoils to come out. Very light weight all carbon construction. Not the biggest front wing so not really for 200lb + riders. One guy at my beach does 360s and jumps and does circles around us on his lp foil. Good prices on used lp foil. You can get an adapter and larger wing as well. Works well with old formula boards.
They were wood core masts and wings, was told by Sailworks crew that at top speed they could feel the wing fluttering. Do not know if the design changed. But the original design used a compression fitting for the front wing, a real pain to assemble/disassemble, newer versions went to standard screw attachment, but do not know if those newer wings were solid carbon or wood core.
I have a LP FRS with the stock front wing of 940 cm2. I weigh in at 200 lb. That wing works fine. Sufficient lift and speed. With the adapter I also have the 1300 cm2 wing, which I rarely use. With the 940 wing, I can easily get speeds of 22 mph, which I can never get with my SAB gear.
With the original FRS design you connect the carbon fuse to mast by sliding the fuse into a hole fitting on the mast, then locking in place with a bolt. Everything is carbon. No aluminum structural parts.
In the later RS design the fuse to mast connection is more conventional.
LP was pretty much the first to come out with a carbon foil in the Gorge in 2016. They say half the Gorge learned to foil on LP gear. And yes, there were reports of vibration at high speeds. This is from Gorgecup racers who used the LP in downwind slalom races. Peter made some 99cm masts with extra carbon reinforcement to mitigate the vibration. I bought one of those from a Gorgecup racer. I never have experienced the vibration.
The other solution to the vibration problem for the racing was the AFS-2 in 2017. I have one of those also. With its monocoque (one-piece) fuse-mast, it is the stiffest foil out there, still today. No vibration at all, but she sings like a diva.
Select to expand quotesegler said..
I have a LP FRS with the stock front wing of 940 cm2. I weigh in at 200 lb. That wing works fine. Sufficient lift and speed. With the adapter I also have the 1300 cm2 wing, which I rarely use. With the 940 wing, I can easily get speeds of 22 mph, which I can never get with my SAB gear.
With the original FRS design you connect the carbon fuse to mast by sliding the fuse into a hole fitting on the mast, then locking in place with a bolt. Everything is carbon. No aluminum structural parts.
In the later RS design the fuse to mast connection is more conventional.
LP was pretty much the first to come out with a carbon foil in the Gorge in 2016. They say half the Gorge learned to foil on LP gear. And yes, there were reports of vibration at high speeds. This is from Gorgecup racers who used the LP in downwind slalom races. Peter made some 99cm masts with extra carbon reinforcement to mitigate the vibration. I bought one of those from a Gorgecup racer. I never have experienced the vibration.
The other solution to the vibration problem for the racing was the AFS-2 in 2017. I have one of those also. With its monocoque (one-piece) fuse-mast, it is the stiffest foil out there, still today. No vibration at all, but she sings like a diva.
The AFS Wind95 foil with F1080 wing makes a light whistle sometimes when overpowered (ready to breach at any moment) really a warning that you are overpowered, but the F770 and S670 wings are quiet.
But is LP still making windfoils? Not seeing any at Sailworks, and only a kitefoil at some other site.
No but viagra guy in this video was on an LP foil he picked up used. Only about 5-10 sessions windfoiling. It looked good on the beach. He said they were made locally in hood river
He is using LP foil in this video. LP foil is one of the lightest foil but they are probably no longer producing. You could still find used if you are interested in riding LP foil.
LP foils were made by Peter Lederer in Bingen WA, across the river from Hood River OR. He is not making foil sets anymore, but still supports his product and makes components to order. They are good foils and are really light.
The AFS-2 sings due to vortex shedding in the stab, not the wing. Along with BP at Sailworks, we all have messed with reshaping the trailing edge of the stabs, with mixed results. You can quiet the singing somewhat, but not completely. Gorge Cup racers kinda liked the singing since it would warn you of an overtaking racer behind you. You could hear them coming. There is more to it than just vortex shedding. I think there is a natural resonance frequency in the stab as well. Vortex shedding has been well studied in the hydroelectric industry for turbine blades.
Select to expand quotesegler said..
LP foils were made by Peter Lederer in Bingen WA, across the river from Hood River OR. He is not making foil sets anymore, but still supports his product and makes components to order. They are good foils and are really light.
The AFS-2 sings due to vortex shedding in the stab, not the wing. Along with BP at Sailworks, we all have messed with reshaping the trailing edge of the stabs, with mixed results. You can quiet the singing somewhat, but not completely. Gorge Cup racers kinda liked the singing since it would warn you of an overtaking racer behind you. You could hear them coming. There is more to it than just vortex shedding. I think there is a natural resonance frequency in the stab as well. Vortex shedding has been well studied in the hydroelectric industry for turbine blades.
So why do I only hear it with the F1080 wing?, as far as I can recall. And I think that was before I got the stabilizer perfectly aligned with the wing, once they were aligned I want to say I have not heard it sing. So maybe the stab. was the issue after all.
I hear the same singing with both my F700 and F800 (now 1080) wings. When I have switched out the stabs with a collection of stabs provided by Sailworks for testing, the singing has varied from nearly quiet to a real howl. BP will tell you it's in the stab.
Select to expand quotesegler said..
I hear the same singing with both my F700 and F800 (now 1080) wings. When I have switched out the stabs with a collection of stabs provided by Sailworks for testing, the singing has varied from nearly quiet to a real howl. BP will tell you it's in the stab.
Same stab, my F800 is quiet and my F700s before I sanded and filled some edges (it had been sanded to razor sharpness by a "team rider") howled like a banshee.
Sometimes it's the stab, sometimes it's the mast, sometimes the wing. Anything with a trailing edge or imperfect surface is a candidate.
segler and Paducah, did you check to see if the stab. was perfectly aligned with mast (@90 degrees) and all front wings?
I added a side shim to the stab. to make it perfectly square with the mast, then I checked each wing with it, F1080 needed a couple of layers of tape on "left side" to be level with stab., F770 need tape on "right side", S670 needed tape on "left side". But I am talking of getting the wing and stab. precisely aligned, when they are it really increases lift and speed, and foil seems more responsive, quicker to turn or adjust height. And like I said, once I did that I do not recall hearing it whistle with any wing.
The newer AFS foils have wider wing/stab. saddles, hoping that makes alignment true without needing clear tape of different thicknesses, thought tape is an easy and long lasting solution, though I do disassemble the wing every time to make sure any water around/on the tape dries off.
