Broken Lift Efoil

I have not needed quick connect until just this week with an updated design im working on. I will be searching for one this week, as should you. Lets post here our findings!

Here’s something I found a while back https://www.polyconn.com/Posi-Link-acetal-sockets-1-4-flow#1

Nice! thanks for sharing
I’m working on the high current connectors similar to Lift for easy disassembly of mast from board for transport. Quality connectors that are IP67 are insanely expensive $350 for 5 (two battery, 3 motor). But looking for similar but alternate solutions.

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i’m also working on some similar connectors, but also fairly pricely have you looked at Lemo?

At this point https://www.digikey.ca seems to have the high current connectors we need, they do sell Lemo also. Its a huge step up in quality and cost going from RC remote parts to real life certified parts thats for sure!

Regarding the waterproof connectors I received a few days ago mine from Weipu Connector Home - WEIPU They are really cheap, IP68, external diameter a bit less than 4cm so you can have them going between 2 us boxes, rated 50A per pin, and what is great is that the outside cable diameter is 16mm, so it will be possible to use 1 tube filled with silicone and our 3 AWG8 cables acting as the main cable.
The contact was excellent and fast with the company. But I still haven’t tried these connectors in real condition, I will use them for my new board that will be finished in a few weeks.
The contact at Weipu Connector was assist02@weipuconnector.com

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This is the same issue that affected North Kiteboarding (today Duotone) during Q4 2017 with their Speedster kitefoil… on the fuselage nose.

The cause is the chosen material. North KB call it “carbon compound”, F-one “forged carbon”. It is in fact small strands of carbon mixed with resin or polycarbonate. The industry wanted a cheap way to make carbon foils like surfboard fins by injection molding. Here is the result. North Kiteboarding didn’t trust this material for the mast strength and stiffness so the mast material is aluminium. However, fuselage and wings are today made like that.
F-one have been using the forged carbon technology since their 2015 line of product. They have been very cautious when using this material:

  • high strain: for F wings and masts => 100% pre-preg carbon (possibly with thin forged carbon core) or 100% alu for other masts
  • middle strain: for rear wings/stab => “forged carbon” cores into layer(s) of pre-preg carbon fabrics.
  • low strain = 100% forged carbon => fuselage
    Furthermore, Fone don’t have mast with integrated plates in their catalogue like Lift which concentrate a huge amount of strain in the perpendicular junction between mast and plate. They use the KF-box standard, possibly with a plate adaptor and don’t have to bother with hollow masts.

Those connectors are interesting, but I am a bit worried about the current, especially in my 80100 direct drive setup. But it is hard to find something rated much higher. I have no experience what it takes to make such things not only heat up a little but catch fire :grin:

Hi! Yes for the current I haven’t find anything accepting higher current per pin. The solution could be to use one connector per cable and separate each cable in 3 to be divised in the 3 pins. If you want something smaller for that there is the smaller model that can handle something like 20A per pin I think so I would make 60A per cable, a little bit better.

If the best is to use one connector per cable, I would go for these from http://www.chogoriusa.com/large.pdf they are more expensive but I like their push lock system. They are 50A per pin as well. I haven’t chosen them for my 3 cable in one connector solution as their outside diameter is smaller than the one from weipu connectors.

or we have to start printing our own bullet based connectors… that can handle the water line at the same time…

filling them with grease could work well to make them waterproof, but it become messy when opened… using o-rings might not be best on 3d print… so a gasket seems to be the only real solution… or have the connector in a dry zone :slight_smile:

I’ve been liking the as150 for my efoil stuff. Works well, easy to solder and cover, has anti-spark, high current and easy to remove and connect. Basically all you need.

Nice Dirkdiggler!
What is the wire (8,10,12awg) coming off those connectors or do the sell just connectors? Is quality high and they don’t get hot at 150A?

There are 100A and 150A single connectors but they are $100 USD each but its real current USA grade heavy duty/certified.

Have you tried these at 10USD per pair plus the price of the 8wg cable ? Do you think the rating is over estimated ?
https://www.amazon.com/dp/B00RVM93YO/ref=cm_sw_r_cp_api_DY-GAb4BQE8VX

Yes I have used those, they are good, but they are solder connections only, and if the solder gets onto threads or bulge our the covers do not work/fit without some time and effort. I posted a long time ago on there the different types and reasons for connections, and because I am going for mass production we opted out of solder connections for two main reasons.

  1. Its way faster to bolt or crimp connections.

  2. Users will miss use products and are more likely to overheat things so desoldering is a concern as its been mentioned on this forum a ton of times. We want wires to be physically held tight and in place no matter how hot it may get.

There are lots of great connectors that will work for one off individual builds but everything we source and test is looking beyond that for easy manufacturing, durable, and safe.

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Will Smith with the Lift foil guys. Long video of him trying to ride. If he had the Killer Foilboard, he’d have been up riding the whole time. Having a bigger board and the cruise control remote makes things so much easier! Trying to stand up holding a sensitive remote is so difficult, especially with a small board and foil.

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You can solder any size wire you want. I think they are basically 8mm bullet connectors, but the housing is nice, you screw them on after soldering. They’re like $25 for five sets off eBay.

I use them for the phase wires too.

Seen that from some of the first videos, many, well mostly all seem to be too weak.

super or have you found this connector backflow?

Anyone have the thickness of a lift board or their battery power Volts and Ah? would be interesting to know what they are running.