Cable position - effect on ventilation

Build, Repair & Mod
1

I want to share something that I figured out.
During my first rides with my foil assist I had problem with ventilation of the prop. The change in thrust was very heavy.
With a few iterations I camed to a setup where this is not a problem anymore.
What maked it working:

  1. the three blade prop from foil drive
  2. a cable guide that leaves a small gap between the mast and the cable.
    (Cable guide for DIY foil assist by StefanG - Thingiverse)

I think that the gap reduces the amount of air that comes down to the prop. (like the good old anti spin out fins for windsurfers - the old boardheads may remember theses things :wink:

2

interesting! i had some ventilatin problems aswell and changed my cable guide to this:

grafik
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I use tape around it. It does feel better, but i still feel like there could be room for improvements. I might try to get the cable closer to the mast. I have several of these in a row until the top.

3

Nice ! I supposed you were inspired by the Jan 2024 Mantafoils solution (2 years already :roll_eyes:). The cable passage to the motor is in a rail with two sliding half-shells, which is held at the top and bottom. The cable is flat, or, like you, they can be placed inline to be streamline in a NACA profile.
At 4:50 https://www.youtube.com/watch?v=y87cG8678CA

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