What is your max phase current setting for the 5085 motor? I assume it has to be lower than the 6384. According to Flipsky it is 50A which seems a bit low to me. Although I set the saite 6384 to 140A phase current, I could get on my gong trail L 1600cm2 pump foil with arount 70A phase current in flat water. I’ll probably start with 80 to 90A, would be a pitty to 
it.
60A current protection in blheli 32 on the flycolor esc. I have used the 5085 extensively with these settings and it is still running smoothly. Ocean water temp has been in the 15-18 degrees celsius. I use a 4’6 33L and 750 afs silk v2 for 80kg, can flatwater start with a couple of strokes to help. Probably using around 30A when motoring around connecting waves.
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Hi,
I will soon test the flipsky 5085 with FT85 ESC, do you know if the BLHELI 32 max current protection is for motor current or battery current ?
I contacted racepow for 2 lipo 6S 25A : 195 $ per lipo + 85 $ for shipment. Do you confirm you also have the same shipment cost ? (delivery to france)
No VAT ?
I already have a 12S3P molicell P42 A 12,6 AH, quite happy, but I would greatly appreciate more autonomy (that’s why I’m looking for 15 or 18 or 20 or 25 A)
My “performance” for now after a bunch of sessions : 45 minutes, 9-10km, maybe 30-40% surfing, and the rest motoring, witth 900cm² front wing, 70kg). Quite surprised by your numbers (1h-1h30 session on the afs enduro 800 with 1S2P 13AH), do you pump a little ?
Thanks,
BlHeli amp cap is for the motor side from what I understand.
Racepow shipping was 25usd for both orders I did, 4 weeks to arrive. Supposedly there was a 50usd option for 2 weeks shipping. I wasn’t asked to pay vat or import taxes. It was shipped in spain, maybe it is different. Send me a DM if you want the sales rep whatsapp number (Tsuki).
I start with the help of a wave to minimize throttle use, link waves, pump between waves, motor with the minimum throttle necessary. So the batteries never get a big discharge, and some time to recover between every use. Doing breaks sitting in the water between sets also help a lot. Probably 50% surf, 10% pumping, 40% motoring. Also, going from molicel p45b to samsung 50s to solid state I observed a better capacity to retain and recover the voltage (independently from the battery capacity). On the silk 850 I could do 15km+ on the 12s2p 13ah on a clean day. On the silk v2 750 it is less, maybe 12km. Choppy waters and current definitely degrade the autonomy.
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Thanks again for the inspiration,
I used your Tinkercad files to create a remix with a three-blade propeller that can be disassembled without tools, printed in PET GF—I love how it turned out.
I also made a new tool-free pod that can be adapted to different masts, with a TPU section for vibration damping and mast adaptation.
Now I just need to test if I can take off as well as I do with my 6384 Flipsky.
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Nice, I did this a while back to make swapping out props nice and fast.
Did you cut the shaft on the 5085 or does Flipsky have one that I havent seen?
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I bought I think one of the last ones wihout shaft on aliexpress, but this version is not sold anymore,
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Would you mind sharing the files? I also got one from ali last week.
I would be interested in the files too.
Do you may have the insert for axis carbon too?
Thanks in advance.
Regards
Robert
the tpu insert is for my 14mm carbon uhm gong mast, but very easy to adapt to another mast (with tpu you don t the CAO files of the mast, just the overall length and thickness)
I will share the files for the mount and the toolless hub in a few weeks, after some more tests. (cannot share blades as they are not my model)
First test today, 5085, 12S3P 12,6A (molicell P42), FT85 ESC, 5.1 surfoil board 47L, 70KG, gong fluid XL 1160 cm², ratio 8,4, can flat water start, easier with a little push, propeller very comfortable, far less cavitation than my alu flipsky folding propeller for 6884 (next test will be my 3 blades PET GF 3 blades propeller with 6364, my toolless hub will be great to test on other motor also)
Definitively less drag, but the waves were very small (40cm) and not very fast,to be tested in more consistent conditions. I limited motor current to 70A, and battery to 55 A, I have 30-40% less power at start vs 6384, it will be very hard to water start my smaller foils (900cm²), I will have to improve my waterstart with a wave.
@foilstate, I’m really impressed you can use 750 cm² front wing and flat start, very good technique needed. what is your weight ?
I was able to go upwind with 12-14 knots, but seems very limited if I want to do wome up/downwinds with 20 knots. Do you manage some upwinds with stronger winds?
(I studied the max current of flycolor HV3 air cross, I may think it’s a mix between battery current and motor current, maybe your ESC gives you more pwoer than mine with the 70A motor current limitation)
In conclusion, I think for now 5085 is limited to expert users, looking at ultimate surf foil assist experience. For intermediate riders, seems a great evolution for not too heavy riders , or/and with bigger front wing.
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What do you think, will it be easier for the 5085 with a larger foil, or will there be too much foil drag and it will draw too much current (be too expensive/power-hungry)? I have the Sabfoil Leviathan series: 950, 1350, 1550, and 1360pro (unfortunately, I sold the 1150). I have two boards, 85L and 90L. I weigh 82kg. Does it make sense to try the 5085, or should I rather buy the proven 6384 option? Battery is a 12s3p Molicel P50B.
I would use it for foil assist while winging, as well as for a light efoil (and for fun for teenagers).
Which ESC is best to use for this backpack/back-mounted variant? I have a ZESC Raiden 7, a Flipsky Mini FSESC 6.8 (which I think is less suitable), or should I look into something else?
if it’s your first foil assit kit, choose the 6384, it’s a safe bet.
I did a second test, was not able to flat waterstart with 1150cm² front wing, without the help of a wave, not possible, a little disapointed
ESC does’nt really matter, flipsky ESC are great;
Nice! I am 78kg. I can flat water start with a couple of double arm paddles on my 4’6 if the water is not too choppy, and the battery level rather high. This motor is definitely for advanced prone assist in waves for minimal weight and drag. Upwind downwind I have not tried with the 5085… I think it’s really on the limit for me. Maybe with a big glider foil or with a pod low on the mast. For that I still use the trusty 6384.
Agreed with @nicolasLGM , maybe 6384 is the safe bet and 5085 is if you want minimum weight and drag at the price of thrust, which will depend on the case of use. If you can do what you need with 50A limit, 5085 is a viable option
In order to avoid having a pod on the mast, I made a mini mast behind the mast that is quicker to setup (a bit like @Bzhwindtalker ). It definitely works great, but more weight on the tail of the board, a bit more flex, and prop close to the tail. To be continued, maybe carbon layup for lighter, and diagonal mini mast to get closer to the main mast. 3D file on onshape :
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Hey Foilstate, thanks for all the detail on your journey in paving the way with smaller motor and solid state battery.
I’ve been talking to Racepow and was looking at buying three of the 13000 mAh 12s packs. It turns out that the data they have on the website is incorrect. They state 5C constant current with 10C peak. What Charlene from Racepow is saying now is that those packs are actually rated at 3C constant current and 5C peak - so 3 x 13000 or 39A constant and 65A peak for 10 - 30 seconds.
I’m 65kg on 34L board and have been using foil assist for ages so I’m sure I’d be fine but had been thinking of recommending these packs to my heavier friends but having second thoughts now.
Seeing you have experience with Molicel and Samsung packs just be curious to know if you have noticed much difference in performance.
I’ve made packs with Molicel P42 and P45 and BAK 45 and just recently made some Reliance RS50 packs. The new tabless cells are phenomenal.
Suspect as you have experienced that the 5085 and the solid state 13,000 packs actually work nicely together as a light weight lower power setup.
Wondering how much difference there is between the traditional li-ion packs and the solid state with the small motor. Appreciate all the detail you are sharing 
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Brave riders move their motors ever closer to the stern, as if the femoral arteries did not exist.
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In the comments under this video (https://www.youtube.com/watch?v=k-xgjMCU0bw), several people describe serious injuries caused by folding props. We should treat this as a real hazard and consider adding a proper kill switch to our designs.
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In your design, the motor plate mates directly with the propeller hub, and the rotational force from the spinning prop keeps the two parts locked together under load. If I’m understanding this correctly, there’s no need for bolts to secure the hub to the plate. That would also mean we could swap props right on the water. I am making a version for 6384 off your concept.
Theoretically, solid states are less powerful and don’t give enough discharge. In practice aka real life, they feel more powerful, punchy, less voltage sag than the samsung 50s. As if it had a higher C rating… go figure. Everything about the solid state has been an upgrade to me, except for the price.
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