It baffles me a bit that guys spend ±5k on the foildrive and the ride it on std boards. You’d think they’d get custom boards so that there is no unit sticking out the bottom.
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I agree. Even the custom boards that some companies are now making have a long groove running on the underside which often have a non flush lip at the front. It looks clumsy. The weight saved on a board with a foil drive inside is a big enough benefit for me alone. Then there is the dynamics. It’s a no brainer.
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Today I tested a 6362 105kv motor. I used a two blade and three blade foil drive propeller. My goal was to shave some weight off of my setup by switching from an aluminum mast to a carbon mast. This motor is about 400 grams lighter and the mast is about 1.2 kg lighter. I was worried about the power to get up on the board with this smaller motor but it had zero issues on 12s and was more efficient then my 6384 baud motor and my 6374 Flipsky motor.
Max power used to get up on the Axis 1201 wing was 742 watts with the two blade propeller and 1367 watts with the three blade propeller. For reference I weigh 78kg. The total board weight with a 12s2p battery (p45 cells) ready to ride is 10.8kg.
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Nice setup, surprised about the power difference to get on foil between 2 and 3 blade.
got more pics of your board?
Hey Tim, thanks for providing such concise info. Can you please share more details on the motor, link to AliExpress or brand. I’m 65kg, I’m sure it would be enough for me!
I think I purchased the last one from this retailer but you can find them from other sellers.
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Nice, there is a good appeal for this kind of setup : you can easily take it on the plane with 100wh battery modules. How much does the board weight?
10.8 kg is not the lightest, based on the small motor
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This set up looks so professional. Total weight is with batteries isn’t it? In which case I think that is a very good weight.
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The board by itself is 5.4 kg, 10.8kg is the total weight ready to ride, including battery, foil, mast, board, leash, etc. My friends that have the FD gen 2 max setup are all around 13-14 kg on a smaller 11s2p battery.
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Good job, what is your use case for it?
I use it for prone surfing.
Really nice ‘pro’ setup Tim. Assume internal divinycell lined battery box for battery and electronics. Are you using XCross esc? Wondering about heat issues with no external heatsink.
I am using a castle creations edge 60HV esc. I have had very good luck with them, no external cooling needed.
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Thank is very interesting… Thanks.
That 742w is enough to get up …
These are the conditions, right?
78kg + midlength? board + 1300cm2 wing + flat water.
How did you measure?
I was thinking about Nolimitz mast, it is so lightweight, but then the adapters… I would like to probably buy Gong wings…
This is pretty interesting. I wonder how small you can go on the foil before it can no longer get you up?
Or alternatively using a 5065 140Kv motor…
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I managed to make a working setup with a 5080 (140kv i think) years ago,
unfortunately it overheated quickly and the efficiency seemed really low compared to a 63 motor, i am 66kg and it was difficult to get on the foil even with a 100L board (@12s)
Also the bearings where to weak because of their small diameter, same for the shaft (8mm)
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Yes, flat water lake, 50ish liter board, 1201, no limitz 85 cm mast.
This was measured using the built in data log function on the esc. I rode an axis 939 v2 at 900cm2 and was using 1867 watts to get up on foil with the three blade prop but never tried it with the two blade. I have found that this motor likes the two blade prop much better. The smallest wing I have tried has been a spitfire 780 which is 902cm2. I am able to flat water start it without a problem but I am not sure if I could go any smaller.
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It’s interesting that this works but that it didn’t work for you with the Maytech motor. I doubt the actual motor specs are a lot different. Could it be the castle esc is matching the motor better than the vesc?
@s9tim how much motor current do you see?
The foildrive blades are a lot more efficient than the 3d printed ones. Unfortunately I haven’t had time in the last few months to test much. I have about 5 sets of blades that need good testing, but just haven’t had a chance yet.
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