Newcomer's build [Ger] + 2nd one

36 was in a turn so I think it was an artefact not a real value. My setup usually is fastest 32

You not even max’ing out the prop you have. The motor doesn’t have enough torque to hit it’s max RPM with that prop. Putting a higher pitch one on would just make it worse. I have hit 38kph with the FR prop and 65161 motor.

That’s not correct. Look @ the graph again. He is at 95% duty cycle while not hitting any current limit. So there is still plenty of room (I thing @Ackermann limit is about 120A) . I would sell the prop again or buy a motor with more KV :wink: The older 4-Blade prop of @Flying_Rodeo fits to this motor much better.

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The song and the foiling are both excellent!!

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more speed:
change prop higher pitch (possible?)
motor 120kv
13s or 14s ( vesc will not like that)
easier might be a new front wing PRO L or M

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Agree about the physics. But maybe I should consider new design of gong wing instead of pushing the hardware too far. We know these motors can also burn…(not mine)

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I think the rpm is not correct and needs to be calibrated. In my log at the very beginning u see also a dry beach test with max duty and no load, 12k rpm.

IMHO, the Veloce (or Unifoil) type of wing (high AR, low chord to thickness ratio) is the trail for low drag eFoiling along with a matching stabiliser. As it is a bit pricey, there are a few possibilities to test such planes:

  • get a used windfoil front wing, a RL front wing optimized for efoil,
  • as skills and confidence builds up, people under 80kg can (re) test the 700 to 800 cm2 kite planes seen on this site (Gong 712cm2, Nobile, Alpinefoil, ),
  • get loaned one to see if it is worth the cost ,
  • wait a few months until DiY equivalents appear here and there,
  • …,

For more Speed the rearing not vergoten.
I have change the rearing from Caprinha too liquid force happy, and I won 2km/h
Grretings Frank

If you see the log I foil at 45 volt with 65amps at max speed. This equal to 2800 watts. Motor is specified to 6000w. I don’t think it is wise to use up to this, nevertheless I am way below. Still waiting for @Flying_Rodeo what we can expect for prop changes in the future.

Power is more :RI^2 , as the internal resistance of the wire and amp , you will have amount of heat produced that need to be cool down ( motor mass …)
45v x65A isn’t the same as 22,5v x 130A

It is better to have 2800w with 95% of duty then with 50% …

What is the Internal resistance of your 100kv found with the vesc ?

Hello,

I dont want produced props to burn your motors :slightly_frowning_face:

For speed i will change wing ( high aspect and 14 s batery and you will fly easy ower 42kmh)

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Many thanks for your care :slight_smile: I think wing change is also my next invest. Let’s wait how gong veloce is performing. Higher voltage is no option for my setup

Just because it is specified at 6000W doesn’t mean it will get there. If the motor doesn’t have enough torque it simply wont get the prop spinning at max RPM.
You need to get the correct RPM reading and see what its really doing. I suspect there isn’t enough torque to get to the max RPM of the motor.

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I think the rpm log is the erpm of a 95kv motor
So just / 3 to have rpm
You run about 80% of the off load value , which is I think is good , motor runs nice with not to much stress

First time(s) on a quiet lake in my hometown. It is much easier to ride without the strong stream I have in the Donau River. Next house/flat has a new number one prio :slight_smile:
https://youtu.be/LAnreKfHofA

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Prop balancer diy. Adapted from my drone bench. It seems to work really well.

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I looked through your Parts List but couldn’t find the specific length of your Gong Mast :sweat_smile:
So what’s the length?

65 cm
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