Can we buy this battery pack ?
Do you have a contact with them? I try to inquire on the website, sent emails, even what’s on his phone, no respond.
I want to buy one of those.
Try him on the forum at @Flying_Rodeo ! He is a busy man! A friend of mine bought a motor system recently so I believe he still sells them!
I remember to have read that a forum member tried in 2019. They refused. Maybe have they changed their minds since 
Lift and direct-drive Flying Rodeo owners might be interested in the story of woe of motors that let the sewing machine oil out and the saltwater in. Saltwater intrusion in an electric motor = catastrophic loss.
https://efoil.builders/t/lift-efoil-motor-wanted-to-buy-used-or-new/10116
Lift released version 3 and seems they are going to release soon an Elite 3 version with carbon prop… anyone seen it? Always thought it was the way to go for best performance. Petrol jetsurf has a really thin carbon impeller.
Maybe a carbon propeller is cheaper to produce than an FR propeller made of aluminum alloy (CNC machining + anodizing). However, it is always the case that the most important thing about a propeller is the shape of the blades, the number of blades and the shape of the hub, depending on the performance type of prop. Only second is the material used.
I don’t think a carbon prop will be cheaper than an aluminium prop. More labour, most likely will have to be prepreg and probably high modulus. For small prop like the one we use blade thickness is super important. Carbon allow to keep blade stiff while thin.
I recently modelled a propeller with three removable blades in 3d CAD. The blades can be carbon laminate or high quality aluminum, the hub will be high quality aluminum. On this project it will soon be easy to see which blade material will be cheaper and which blade material will be stronger for bending.
Yep made removable carbone blade in hub before, I had better result molding carbon prop in one shot. Blades were breaking where they entered the hub, I had to use high modulus UD for it to work
It’s admirable that you were able to make that type of propeller.
I think it’s easier to make a wing out of carbon. Have you tried it yet? Or do you prefer to use a commercial wing now?
Sorry what do you mean by wing? a foil front wing or propeller blade?
It is quite easy to mold carbon prop blade as above but I found out if you really want a gain in performance it is hard to make them thin and strong enough with this technic, they tend to brake at the hub where they are inserted. That said I was using printed mold, I might give it another go and cut aluminium molds when the CNC machine is free. I think the trick is to increase the root thickness where it insert in the hub, like 3-4mm thick where it enter the hub down to 2mm at the blade.
Jet surf impeller:
What have really been the improvement between the different Lift version E1 E2 and E3.
I read E1 and E2 25MPH, E3 30MPH
From what I undertand the motor is still the same. Would the speed increase come from using a 7" prop on the E3 while E1 and E2 was 6"?
Just for reference, the FR prop has a 5mm root and is 1.75mm at the blade tips.
Yes, I mean the foil front wing. Thanks
Yes I made quite a few foil full carbon.
In that case, I could advise or help you to increase efficiency.
I think, given the theory, that the speed will increase. But it’s very likely that the current will also increase (the battery will discharge sooner). In order to keep the battery from discharging sooner, the propeller efficiency has to increase, but that’s rocket science.
Supernova (announced to be back this July 2021) had a strong and original propeller blade principle for the torque model. Not sure it ever saw the light of the day. Has anybody ever seen this kind of aluminium extrusion ? Does it exist with 3 or 4 slots ?
