FR Motor and VESC 75/300 without any power

Alexandre,
is it possible, to me send me your configuration?
May be I made a mistake and thats why its not working…

Mp me your mail …

Yesterday I tried the new configuration. Yes, it worked!!
I don`t know the mistake, but it worked. I am 80kg, my board is 30kg with a big battery inside.
May be the mistake is to stand up too early. The board is 1,40m and I press the board into the water. Yesterday I was laying on the board for a longer time, standing up when the board is faster. That worked. At the end it becomes easyer with every start.
Thanks a lot for Your help. :grin: :grin: :grin:

Reply

Alexandre

1

2h

New configuration , mine ?

Yes standing fast on short board and to far on the back , will demand to much torque on the motor

My problem : motor was getting « stuck » at high amp 90A low duty low rpm , max setting regulation motor amp was activated and I didn’t go in plane speed

With 120A a bit longer on the front , start was easier and I have a 2.30m board …

With my first geared motor , I just jump on the board , I fly away but with a pic at start of 250A on 8s lipo so about 8000-9000w for a crazy start on my long board …

Very happy thing works

Reply

Subusi

8m

I checked my configuration with yours. At the end I changed nothing.
I made a protokoll, may be someone can interpret the logfiles. Where are the limiting values?
How can I get 8000W ? How can I get faster?

2 Likes

check your log

numbers add up : voltage batt, duty , erpm … everything is fine

you are running at a bit half speed

Can you send me via mail for setting ?

the only thing i can see:

EDIT/

sorry missed some value in this long log:

current control no reverse mode with max motor amp achieved at 117A (max allowed in settings) so everything is normal
try modified V1 ( motor+app)

Hi,
that would be great. Can you send me your email via pm?

Now I tried the V1 from Alexandre. Everything worked well. I was not couraged enough to give full Power… I have to see the difference between
My configuration and Alexandres.
Alex, thank s a lot!

4 Likes

hi today I tested
FR Motor with vesc and couldn’t get out of the water.
Maybe a have a similar problem.
Here the log

max Battery Current is set to 100A

Looks like you hit current motor limit (120 A ?)
This prevent motor getting high RPM

What is the pitch of your propeller ?

Can you try putting higher motor amp limit on your VESC (dont fry it) ?

Its FR Motor with FR prob.
David wrote me i should set one value to 120A and the other to 150A but i am not sure if he ment motor current or battery current

Motor current, in your log battery current is low

I will try, thanks for the the fast input

1 Like

I’ve got the same motor and Vesc as you, I tried this setting 150A motor and 120A battery but it was WAAAY to punchy when I touched the throttle. I found 130A motor and 90A battery far easy to tame/control. I’m running 14s by the way. When on the foil I was only using between 55-60% throttle.

1 Like

This is my log from the last test in the pool.
The motor amps are set to 150 and the batterie to 110.

What rpm should i have. Does the values seems right to you?

Rpm logged is actually erpm , and it’s matching , duty x voltage x kv (130…) x 8 ( pair pole)

Off load you take more than 50000
On load around 21000 which is limited pour the 150A setting , I supposed statique test (?)

In really , dynamic test the motor will take its 50000 erpm

So for me everything is matching , prefer : duty cycle no reverse for testing …

Ok, thanks for the explanation.
Earlier today i made a dynamic test with max motorcurrent 120A.