Can you spin it up before and after filling it up with corrosionX and measure the power consumption and max RPM both times?
In theory it should get much, much worse given that oil/fluid has about the 100x - 1000x (depending on which oil/fluid) higher dynamic viscosity than air (the reason why the wet running outrunners run with 100W in air and 800W under water; both times without prop).
Good idea. If the firmware fix works i will be sure to do a before and after test.
I have the 75/300 VESC. So I can measure the resistance / power draw. And let you know. The idea is to leave enough air in the motor that the corrosionX fluid stays out away from the rotor. The spinning rotor holds the fluid out into the windings and the rotor spins in the air remaining in the case. So, don’t overfill it.
Not a bad idea to test it. I have 3 of these motors. Only filled one so far. Lmk what specifically you want to see tested.
The beep you expect is really really low sound, a normall motor will beep much harder, so try listen very carefull. thanks for the update, I hope they will give a better firmware.
Nice!
Well wire up one motor, connect your PC via USB and do the motor detection. Then let it run at different duty cycles (e.g. 10,20,30…) and note down the power in and the rpm in a spreadsheet.
Maybe also measure the voltage and current by a multi-meter. Since the VESC uses shunts for current measurement good for up to >400A, there might be a STD of some amps, so the low range is extremely unprecise.
Then wire up the other motor and do the same.
Will also be interesting how much the 2 not filled motors differ (like how much production tolerance the motors have).
You can also fill it completely, leave it overnight and then drain is out. That way the motor will be coated and resistant to salt and water but with no extra resistance from fluid.
Looks like it is hard to get. Corrosion x in Europe
here for me i find in ebay uk for 28 euro with taxes includ
You can get it for £12 in the UK
Hi Guys. Still having trouble with my Flipsky 65150 and Flier 400. I have been in contact with Cathy at Flier who has been unbelievably helpful and attentive! (I will definitely be buying from them again in the future).
I have tried 3 different firmware versions at this point including the B_Uart_LowKvMotor firmware that has seemed to work for others (Like @Flightjunkie and @Louis) I still have the problem where it doesn’t start up sometimes and I need to turn the shaft to a slightly different position in order to get it to start spinning. Once spinning it sounds pretty good under no load but when I test it in the pool under load it doesn’t seem to spin very fast and only pulls like 10A. It also sounds really rough like its way out of sync.
I am starting to wonder if I have either a defective speed control or motor? Any brushless motor experts out there that might have any ideas?
Here are some videos of the symptoms.
https://drive.google.com/file/d/1ZXLQGryy_hKzA5YdVWy_hOFRoH5TTVnC/view
https://drive.google.com/file/d/145qBGubFqUoYw9j2xKjfLuS_vUyNlAuQ/view
What’s you battery specifications? 12s? What type of cells? Low amps from the batter can cause this.
Did you calibrate the remote?
The links you posted are private. Please provide access.
https://drive.google.com/file/d/1ZXLQGryy_hKzA5YdVWy_hOFRoH5TTVnC/view?usp=sharing
https://drive.google.com/file/d/145qBGubFqUoYw9j2xKjfLuS_vUyNlAuQ/view?usp=sharing
Sorry. Here you go. Links in the previous post should work now also.
I did perform the calibration.
Batteries are 2x 6s turnigy 20ah in series for 12s. Ive pulled over 220 amps from these batteries before with an 80100 setup. The rough sound makes me think its not a calibration issue but something more serious like timing or hardware issue.
I watched your videos. Yes. That is terrible.
What firmware version were you using for those tests?
Send those videos to Flier.
When I get a day off I will so more testing with mine and see what we can figure out.
Looks like you need more start current. What KV is your motor? I have the 120kv Flipsky motor. The lower the KV the more starting problems these motors have.
Don’t give up hope yet.
Thanks.
I have sent these videos to Flier. Maybe they will have a solution. I am using the 120KV motor just like you and a few others I have seen on this forum. I am running the BUart_Low KVmotor firmware, also the same as you I believe.
I wonder if it is a motor issue?
I have an 80100 that I had working in the pool a few weeks back. Maybe I can reinstall that motor and retest it with the original 16s boat firmware I had been using. If it works maybe then I know that the ESC is ok and it is likely a motor issue? That is going to be alot of work though but Im starting to run out of ideas. Thanks for the help.
I have exactly the same problem as you with the same sound etc. Flipsky 100kv flier 500a esc
I haven’t tested mine in the water yet. Maybe I’ll find I have a problem too
Oh boy. I was almost hoping that I had a bad motor or esc.
Do we know of anyone who has actually ridden with this setup yet? I wonder if others I have heard using this firmware have only tested in air. How long till you plan to get your setup wet @Flightjunkie?
The good news is that Cathy at Flier seems to be really responsive and willing to help. I will work with her to see if they can help. I have shared the videos I posted here with her. Of course, I will keep everyone updated with what I find.
Hope to do water testing in a week or so.
I’ll keep you guys posted