yes the throttle an rpm are not the same in linear. at 3000 rpm must be the trottle maybe 70 % or more at 44 Volts.
The problem on this maytech motor is, it has not enough poles… So a lot of energy wasted (or turned into heat at the controller)…to achieve the torque. Thats why high currents are needed…with all the problems arising from that… thats why most ESC`s behave strange as well;-)
Goal is to pull about 800W foiling with 85kg 
I have used swordfish esc last year , slop throttle curve is linear to rpm off load of course
Under load yes the ratio rpm / voltage applied on motor will decrease as torque and amp will raise but i don’t think in that case esc applied more then 22v on the motor phases at 50% throttle (if the throttle is set to 100% at first )
At the point the rpm will be lower than (voltage x kv) and for this happens as soon as the propeller gives thrust for me …
Using the same software i always got a rpm drop of about 25-30% under load with my setup last year with any propellers tried ( only amp and speed changed)
I take on the challenge 
It is then very important to have the same speed. in weight, we are very equal to 85 kg. yes, of course, at the moment more poles are the answer. I have been flying with 42 or 48 poles engines for years. At the e foil, I expect a higher overall efficiency from the inner rotor when it is perfectly tuned. that is a challenge. but feasible. I will show in the coming weeks complete logs of the drive data in the video. we will see.
Looking good ! For the same numbers speed/km… I need 60a on the battery and about double the wh …
I tried to switch to your RL wing but I wasn’t able to fly ( not enough skills I guess) , the takuma V100 seems very very easy after trying 30min …
May be my board is too long with the battery in front …
Here are some pictures of how the motor with the milled part is attached to the mast. furthermore, the tail for the passage of motor to the propeller. is glued together from cfk rings and then shaped on the lathe. i did it like in the past with the spinners of model airplanes.
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Nice.
How did you achieve this? FR Motor and new foil?
Which speed controller are you running with the FR motor?
In the pool I just measured the maytech 65 /162: a rope attached and lying on the water surface. attach to the mast at the top of the boat. The nose on the board was held so that the nose can not ascend. The train was worth a maximum of 72 kilograms at 54 V / 146 A. the water temp. 26 degrees celsius, sweet water. it is a huge increase in performance against my previous drive. which, of course, is mainly due to the large propeller with 180 mm and the strong torque of the 6-pole in-runner. The scales I have used is a calibrated digital scale which is suitable for up to 200 kilograms.
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You achieved 72kg with the Solas propeller , 3,5hp plastic one ?
yes, on 4200 U /min 72 kg. complete sanded and work on it by Hand too geht more Performance. without sanding and Hand working on it. 65 kg.
Maytech 65/162 so is it the 195kv? And you are running it at 14s but limited at 4000rpm?
I just ordered a flipsky 100kv, I hope it will be the same as maytech since Virus has good results with it. I was thinking of 120kv but can always go for higher pitch prop.
This is the first Bollard pull test for the past 12 months since @Frage did it with a bathroom scale in a swimming pool (Bollard push). It shows a surprising result. Could anybody do the same thing with a Flying Rodeo motor ?
My tests with this prop : top right worked the best but no more than 22km/h with my old setup( rpm maxed at 3100 ) … good thrust …
https://efoil.builders/uploads/default/original/2X/6/6329c8c5a15266f3d02767307bb8f638afaa71b3.jpeg
See my post under « rpm drop … »
At least we known 65150 and Solas work …
Looks like pegasus has similar motor…at least it`s back and shaft look familiar…
https://www.instagram.com/p/B11btm4H1Me/?utm_source=ig_web_button_share_sheet
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Well spotted! I bet its the same motor. You definitely wouldn’t bother cutting your shaft like that otherwise…
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What is the recommended ESC for the FLipsky FS65161 (100kv)? Swordfish? MGM? Others?
I have not run it in water yet, but it dry runs well with the ARC200. I would imagine the various VESC’s would also do a good job.