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  1. M

    Wick experiment

    If Jurin's law cant be applied (The tighter the space, the higher and faster the liquid goes), then this means that we have stumbled upon a new physical effect. Someone should try to calculate it and make a name for themselves:-) By the way, I have just made another experiment that shows the...
  2. M

    Wick experiment

    I have just made a new experiment, if it is of interest. You can never have too much cotton in your coils. They only get better (i.e. they need less power, give less spatter and more vapor) The worst results was the "a little bit tight" option. Stay tight, wick hard, my friend!
  3. M

    Wick experiment

    We have all done it wrong. Again. Well most of us, myself included. According to Jurin's Law the capillary effect is stronger the tighter space you have to lead your fluid through. Gravity is not the biggest issue in vaping, but viscocity plays a role, so I wanted to test out this effect with...
  4. M

    dotRDA 24mm from dotMod, review, air flow and coil placement

    This time I have spent a little time arguing for the benefit of placing the coils at the "wrong" place, if you like those deep flavors and middle tones, dense vapor, and som spattering for sweetness. The main theme is of course the "right" place to put your coils.
  5. M

    I have been wrong about air flow in RDAs all the time...

    You are very right in your logic. Study the aerodynamics of tennsiballs, baseballs and golfballs. At speeds of 55-300 mph, a golfball has much less drag than a similar ball without dimples. Above 300 mph, the smooth ball is much better than the dimpled golfball. All the science I have read says...
  6. M

    I have been wrong about air flow in RDAs all the time...

    I have pondered this very question, and I made a video on it that has turned out to be, shall we say, controversal :-) It all has to do with speed and thermodynamics. A laminar boundary layer is exelent for lift and flying, a turbulent boundary layer is better for cooling. One would therefore...
  7. M

    I have been wrong about air flow in RDAs all the time...

    That looks just awesome! Perfect!
  8. M

    I have been wrong about air flow in RDAs all the time...

    @DaveP More important than the size of the opening, is the "depth" of it. Thicker walls or tubes will be much more directional. Just "a hole in the wall" will act like a sawed off shotgun, while a tube gives more of a rifle direction and higher speed of the flow. It's about the vector of the...
  9. M

    Pulse 24 RDA, air flow review

    This is not about features and materials, but about the air flow and coil placement in the Pulse 24 from VandyVape. With footage and stills of air flow.
  10. M

    3 different coils in air flow experiment...

    Now you are just making me self conscious... :-) After discovering the flat wire coils I have gone down from 120W to 45-55W. And I have often reduced air flow if I have to use standard 22g-24g wire because of space restrictions. Because of the air flow discoveries, I have found out that a lot...
  11. M

    3 different coils in air flow experiment...

    Yeah, I came up empty on such videos myself. It seems wind tunnels don't run tests below 80 km/h or 50mph. This I think is a too low of a Reynolds number (Re) to be of interest to anyone but us. And it was the only reason that I built the new chamber. I had to see if the statement "below 55 mph...
  12. M

    3 different coils in air flow experiment...

    That's ok. No offence taken :-) Look at my other answer!
  13. M

    3 different coils in air flow experiment...

    Hi Paul, and thanks for calling me a cool dad :-) This is an ongoing series. I can't repeat everything I have said in all of my videos every time I make a new one. This is a "part 2" on flat wire coils vs clapton coils. My expressed goal in all my videos is better flavor, starting with the...
  14. M

    3 different coils in air flow experiment...

    I have had the same experience with several RDAs since I first saw the air flow direction. Now I never have gunk on my coils, never burned cotton, and fantastic flavor. I have tested several new RDAs, and will include air flow footage when I review them, so this will not be a secret for too long...
  15. M

    3 different coils in air flow experiment...

    Thanks for your input, Walee! It is indeed amazing!
  16. M

    3 different coils in air flow experiment...

    Try 22g or 24g. Stay safe, because these are very effective. Do not build below 0.2 Ohm on anything.
  17. M

    3 different coils in air flow experiment...

    Hmmm... Sorry, but I can't see how the wick changes the surface of the coil ;-)
  18. M

    3 different coils in air flow experiment...

    This might be of general interest... :-) The video is about air flow on different surface cylinders in an air flow chamber. My findings are observational and anecdotal, not scientific. But my hypothesis is slowly turning into a theory. Flow comes in from the right, vacuum cleaner sucks from the...
  19. M

    I have been wrong about air flow in RDAs all the time...

    Yes, I agree. But I will do some further testing next week to be sure.
  20. M

    Pulse BF Box Mod squonker... at 8.4 Volt

    I did this video today. It might be of interest that this box mod can be used at 8.4 volts :-) Just remember to stay above 0.6 Ohm on your RDA. Using flat wire or regular wire coils will give lots of battery life, and spares are small and easy to carry.
    • MortenOen
    • Thread
    • 8.4 volt squonker pulse pulse bf squonker vandyvape
    • Replies: 0
    • Forum: Device Reviews
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