Looks super sick! Lift has 14s14p Samsung 30q cells.
I’d imagine it was the wings that made the difference. The infinity 84 has bags of lift so it would be super efficient at cruising speed.
Ok, thanks.
I thought you had managed it without external watercooling.
Thanks
All ESCs need water cooling unless you do a large heatsink that is in direct contact with the water.
Water cooling is really easy. You don’t need a pump. Just a hole in the nose cone. There is plenty of ram pressure.
Hi.
Yea. The infinity 84 is a really good surf wing.
I’m quite impressed with it’s overall performance. I can foil at 7mph. And I can comfortably fly at 20mph. And hit 23mph if I’m pushing it. It’s also very maneuverable, a super efficient, low drag wing.
I think so.
At the moment i can ride 36 minutes without watercooling.
For testing i will add two extra heatsink to the box.
And after this, I am sure do activate watercooling 
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Nice man, flying the dream
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@Flightjunkie are you putting custom screw threads into your Lift enclosure to keep your ESC box in place? I don’t have those same screw holes in the back. Did you melt them in or something?
Can anyone clarify why the FR blades (or any blades) have variable thicknesses? Is it for strength only, or is there some hydrodynamic advantage of a variable thickness prop blade?
Thanks
Pretty sure the blades of a propeller follow similar rules to that of an airfoil.
Hi.
Yea. I just drilled the enclosure floor. It’s a plastic material. Not CF. I tapped the holes and just screwed it down. Seal the treads or water could get into the core. A better way to do it would be to drill a large hole (1/2"). Fill that hole with structural epoxy, then drill and tap a small hole in that. I use “Splash Zone” by “Pettit”. I’ve been using this stuff for 20 years on boats. It’s stupid strong.
On my SUP efoil build I used this method and installed straps because I want to easily be able to remove the e-foil gear and use the board for Wing Surfing and SUP foiling
Hi.
Blade efficiency is very important in a propeller. It’s a spinning wing that needs to generate lift. A paper airplane will fly with it’s flat wings, but you don’t see large planes with flat wings for the same reason.
And strength is another factor. If you made the whole blade as thin as the leading edge needs to be, the blade would bend or break under load. The root of the blade needs to be thicker.
You think melting threaded inserts would work? I’ve done this with PLA (like my nose cone) but I wonder if it’ll work on this injection molded plastic? If so, that would give you threads you could seal the bottom of as well. What do you think? Crazy idea or nah?
Try it and let us know! Not much to lose. If it doesn’t work you can just drill it out and fill it with structural epoxy and drill and tap it.
Haha, good point!!!
Hi,
Would you share your cable specs between battery case and charger ? I know you are using 7 or 8 pins cables but I wonder which type suited for you. I will go with 15 pins for my pack.
Thanks !
Hi.
I have tried a few different types. The ones I’m using now I am very impressed with. I add an o-ring, and fill them with silicone grease. I purchase them on AliExpress and with DHL shipping I get them in one week and it’s about $25 for two including the shipping.
Make sure to ask them to include the screw type covers. The rubber covers are not a good seal.
US $5.51 20%OFF | WS16 Series 9-pin Aviation Waterproof Connectors LED Power Cable Connector Male Plug Female Socket Rated Current 5A IP67
https://a.aliexpress.com/_mqKZNZ9
I saw similar connectors in BMS for ebike. You are using ones as balance cable connector or for other purposes?
Thanks ! I’ve been ogling on Lift’s connector which I am about to buy too 
Same one with 15 pins to balance charge with external BMS.
My question was more about the cable between this connector and the charger. I’ll be using a 15 or 16 x 22 AWG cables but seems pretty hard to find with silicon jacket. Which one did you use ?
Hi.
Yes. Balance wires for charging, and they also serve as connectors for the voltage alarms while riding.
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Hi.
I haven’t seen 15 or 16 conductor wire. Sorry.
I used 9 conductor wire and just pulled one wire out because I only needed 8. You could use this and just run two cables to get the 15, or 16 conductors you need. But, it’s not silicon covered.
Screen shot:
Link:
https://www.ebay.com/itm/283609783039
Picture of this wire used in my build:
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