what ever …if anyone buys the " Flipsky Brushless Inrunner Motor 70131 150KV 12KW For E-Foil | Foils | Lift Foils" start a thread about it.
It has been bought already…that’s why there is a thread…
Interesting. Do you have a link + price where you have bought this propeller ?
Did you decide to buy a bigger propeller (8’1/2 instead of 7’1/4 usually here with the plan to reduce it) so that you get a bigger hub that what a 7’1/4 propeller can offer more flush with the tube for better drive train efficiency ?
The graduation gives outer diameter equal to 2 x 90 (124 - 34) = 180mm (blue rectangle) whereas a 8’1/2 propeller is supposed to have a 8.5x25.4 = 216mm outer diameter.
The propeller hub seems to be 80mm (165-85 in the red rectangle) whereas it is a 65mm motor ?
Flier asked me to send them one of my motors for testing. I noticed their address shows they are located the same place as Flipsky. I asked them if they could work with Flipsky to get this issue fixed. I’m waiting to hear back.
I also emailed Flipsky. They replied saying
" Thanks for your email.
We just bought a 400 amp ESC and we should will get it these two days. We will do testing once we have it.
We understand the importance about that and we will focus on it.
Once we have any update we will keep you posted. Thank you.
Best Regards
Flipsky Sales and Service Team /Gavin"
…End quote
I will update you guys when I hear anything.
I love the way these companies want to sell their product but then request customers to send their motors in when their products have problems. I had the exact same issue with Hifei. I told them if they wanted to sell products to certain industries they should do proper research and purchase their owns motors to make sure the ESC’s work. Then I spent my money elsewhere…
hi, do you have any idea about brushless systems?
very well. I also measure everything in the cad for photos or scan on the scaner of components. Often one then comes to the fact that some information can not be correct. But often one can clarify misunderstandings or help others in masses. as an example, a picture for the drilling grid for the mast.
The drill pattern is most of the time 90 x 165 mm.
Is it bad to run the motor dry? The shaft gets hot. Maybe from the sealing that runs dry at the shaft? I just keep testing the Flier ESC so it is only for a short moment.
The mti 65162 is sealed with a 12 × 22 × 7 seal. It does not produce much heat. Be careful not to act like me with enough flier esc!
Dont run it too long. Or run it underwater…
But don’t run it with high timing, that will eventually damage it.
Nitrile rubber seals tolerate dry running for short periods just fine. The temperature range for a nitrile seal is -40°c to 100°c. Outside of these temperatures you will damage the seal wet or dry.
Spray corrosion X on the shaft seal. It’s a good idea to do this everytime you use it too.
Ok guys. So I posted my emails with Flier and with Flipsky. Both companies are now working together to try to fix the Flier 400 amp red boat ESC issue.
Flipsky said they will have the ESC in a few days and email me back once they have tested it. They are holding off on sending my motors untill after the testing incase they need to make any changes they said.
I will keep you posted. I still have a battery to build and a board to shape. 
And I am still hoping to find someone willing to share motor mount files, prop guard files, and suggested propellers options. (P.S. don’t PM Jezza and ask for files. He gets mad!). 
So far I plan to trim down the Chinese prop like Virus used in his initial testing of the Maytech motor.
Why don’t you use the FR propeller ?
I messaged FR about a prop. He didn’t have a price, and they weren’t available for purchase yet.
Hi @Flightjunkie
I have not tested or even printed this design. it is designed around the 65150 & slingshot mast (Slingshot hover-glide mast design - Foils & Boards - FOIL.zone)
The design will need 5mm Threaded rod & a metal plate at the bow end.
I am getting ready for a 3 week NZ holiday so just put it on line as it may help you. The nose is a WIP maybe someone else can help you while I am away… have a look & see if it helps you.
Caveat emptor