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  1. J

    Electric Hydrofoil/E-Foil

    I was looking some noise comparisons on youtube and noticed how much quieter ePropulsion next to Torqueedo is. I went to ePropulsion official site, they showed their "gearbox free" system. Possibly an outrunner? (i didnt find anything about dimentions but it doesnt look 2 bulky, not sure)...
  2. J

    This dude is sick xD

    Ty, didnt realise that. (weird translation to my language)
  3. J

    Electric Hydrofoil/E-Foil

    I hope u extend your quiver from lightwind to nowind ;) Thumbs up!
  4. J

    Electric Hydrofoil/E-Foil

    12S 16Ah: 2X Tattu Plus 6S 16Ah. I am interested in startup amps and "when up foiling" amps :) I think his motor tops out on 120 volts/100 amps if i remember specs correctly. Also, this wake foil seems a bit smallish, its designed with a lot of power in mind so i guess it isnt much stable at...
  5. J

    Electric Hydrofoil/E-Foil

    Try playing with foil angles. Hiorth said it helped him stabilize his flight a lot. Not sure did he inverted "backwing" (contra lift to oppose kite pull+getting more lift ; however i am not sure are kite and wake foil 2 different setups) or just changed total angle of the fuselage but he looks...
  6. J

    Electric Hydrofoil/E-Foil

    Vincent that looks great! Good luck with cooling, i like the idea, wish it works!! Would solve a lot of problems. Also, u are running around 5000 rpm at the propeller? (8s on 170 kv)
  7. J

    Electric Hydrofoil/E-Foil

    From a kitesurfing perspective (i use twintip), more board surface and less rocker (curvature of a board), less power needed for planning. But here, i just think u need certain speed which foil needs to get enough lift. Hiorth said he keeps 1/2-2/3rd of gas till he lifts off, then 1/3rd during...
  8. J

    Electric Hydrofoil/E-Foil

    I still dont get how to properly cool an outrunner watersealed without adding any liquids/semiliquids and some kind of a heatsink for this purpose. And i still would be very suspicious about temps and losses. I guess using overspeced motor would work but.... size? Can he use "emtpy space" (in...
  9. J

    This dude is sick xD

    I am not sure is this anywhere on the forum, and the guy is maybe even on this forum but this is freakin 2 sick to not share! My apologies if its a double post, i just dk where to post this. I am sure admins can clear this in 1 click :* Who hasnt seen, enjoy :)...
  10. J

    Uber scam?

    There are actually dimensions, motor type, power specs, battery type.... But there is no PayPal (or at least some kind of buyer protection, only direct deposit) option and most of the page is https but NOT at the PAYMENT PAGE. Enough for me :| Cant find info about website either. EDIT: Shipping...
  11. J

    Uber scam?

    Hey ppl, dk where to post this but some people pointed me on this website and some are even planning to deposit some cash. I told them not to but... Check for yourself: http://scootertop.com/ Any1 knows anything about this? o.O
  12. J

    JET BOARD PROJECT

    Well, as a kitesurfer, i can tell you longer and (more importantly)wider (with no, or almost no rocker at all) are planning champions and are suggested for beginners (easier to stand and less speed needed to plane). Drawback is less maneouverable and a bit*h in chop. Once they learn how to...
  13. J

    Husqvarna wre125

    Pozor! Elektrika zarazna! hahahaha Hurry up with filming pls :D
  14. J

    Question about electromagnetic fields and health

    Statistically, people living in close to high power cable/compound areas, tend to have way above the average body anomalies aka cancers, blood diseases, defects and similar stuff. Only reason why it continues to be like that is cause there is no explanation aka proof for it. Unfortunately...
  15. J

    Electric Surf Board

    U need certain amount of speed to be foiling and when u reach it, u can foil no problem. Till then, its regular surfboard. And while foiling, u need i would say half the power :)
  16. J

    DELLER russian dirtbike

    Maybe they forgot to say it's 2 different motors u can pick before purchase eh? ;D
  17. J

    Magnet motor?

    I "dont" want 100% efficient motor or perpetum mobile. And why planet? Why not spinning it on the edge of the atmosphere in vacuum without bearings and 0 gravity eh? Solars could power electromagnets and we could even forget neodymium ;D And motors are not a "bottleneck" at all imo. Idea is to...
  18. J

    Magnet motor?

    I imagined it as a nice idea for battery substitute (or "battery helper"), as a generator or a charger :D Hand would only be a "starter". And ofc u need to invest some energy. Magnets have to be made too, bearings... etc etc
  19. J

    Magnet motor?

    How about arangeing the magnets and mechanically changing the poles with rotation (like valves on a gas motor), similar to this video under? https://www.youtube.com/watch?v=4Ge2h8Apgd8&t=314s Minute 5 :| It would allow a full 360? I am not trying to invent anything, just curious in the whole...
  20. J

    Magnet motor?

    Why are we still not seeing something like this? -.- I saw very old yt videos and old old posts of self sustaining (after u give it starting momentum with a hand) permanent magnet motors spinning for a very long time. I am well aware of very possible hoax too but i it's obvious to me it could...
  21. J

    DELLER russian dirtbike

    Oh cant wait to see urban version. What motor is this, costume built and winded? Bldc i presume?
  22. J

    DELLER russian dirtbike

    Sweet zombie Jesus, what the hell?!
  23. J

    cyclone 18kw???

    Well, 18kWh battery with nice C number would run it for 45 mins eh? ;D
  24. J

    32Ah pouch cells.

    Hm, with 25x25cm and nominal 370 amp discharge rate... Very interesting o.O I wonder, how much cycles would it have at 2-3C max regular discharge usage. Would be a long term pack?
  25. J

    DIY 18650 20 Ah 36 V -- pipe pack

    Looks awesome and safe. I hope that pipe is not welded part of the frame eh? ;D
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