This doesn’t count as much of a test. But, it seamed to have great power and it did not have any starting issues.
Thanks for sharing the vid man. I wonder if your motor load decreases as the water in the bucket spins faster and faster and eventually (but quickly) allows the motor to spin at full speed. Maybe with the increased load I had in the static water of the pool provided enough resistance to cause bad sync issues? Not sure if I did the best job of explaining this…
I see you also didn’t have long enough m5 bolts yet. 
I’m also hoping to do a real water test soon. I need m5 x 110mm bolts first.
I got mine from McMaster.
Screws, M5 x 0.80 mm Thread, 110 mm Long
Looking at @Flightjunkie ‘s pictures of the inside of the motor, it looks like it has 18 poles. Does that seem like more than most motors? It’s certainly more than my 80100 outrunner. I wonder if the esc is not setup for 18 poles?
What prop were you running with this issue? I was using a copy of the FR prop that I attempted. It has considerably more blade area than the props I have run on my 80100. I wonder if the motor has too much load with this prop? If it did though I would think it would be pulling tons of current and it’s not
Hahahaha. Yes. Not easy to get. I redesigned the mount so I could use 100mm long bolts.
Found them in 304 stainless on Amazon.
The rotor has 6 magnets. So, this has led @Jezza and others to say it’s a 6 pole motor.
But, if you look at the rotor you can see one end has 6 magnets, and the other has another 6 magnets that are offset from the other 6. So, I think the rotor has 12 poles because of this. And yes…the outside windings look like they have 18 poles.
But, I’m not a motor or electronics expert. So, I don’t know what to call the pole count. But, I would think it’s more then 6?
It could be 18 poles I guess. 6 times 3 = 18
I don’t know. Maybe some experts will chime in.
I was using a 7.4x5.7 outboard motor prop. I just modified it to fit the shaft. I didn’t cut it down. So, it’s was a lot of prop.
If I hit the throttle quickly it instantly came up to speed and shot the water in the buck up in the air. So, it was not having the lacking power issue you are having.
I am going to try to do a water test today. I will let you know how it goes! 
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12 Magnete =
12Pole or 6 pole(2x6)
Greeting Frank
Thats wrong.
It only counts how many magnets are on one cut through axis (e.g. they could be swirled).
I can see 6, so there are 3 poles pairs.
So you need 3 electric commutations for one real revolution.
Still it is strange that the magnets are offset on the axis, but the slots are straight.
This motor is 6 poles and 18 slots. So this is written 18n6p. Seems that the rotor is kind of skewed, which is strange fot this motor.
Agree that it seems very interesting that the rotor magnets are offset halfway down the shaft. I wonder if this could cause this strange behavior and low power with the flier 400.
@Flightjunkie I can’t wait to hear how your test goes! Best of luck and keep us posted. I’m chomping at the bit to ride this baby before I have to go back to work next week!
Thx guys. Like I said. I’m no motor expert.
The test was a success. Flipsky 65161 120kv motor, FR prop, Flier 400A red boat ESC with “BUartLowKV” firmware, battery 14s14p. And water cooling. Slingshot infinity 76 wing. Maytech V2 remote with conformal coating and corrosionx modification to make it a bit more waterproof.
Video was taken. Sorry. I’ll post that later. But, here are some pics taken with the phone.
70% throttle was more then enough. I didn’t need to use much more then that but I did some full throttle runs to test everything. Rode for about an hour. Battery cell voltage was still at 3.5v pack was charged to 4.15v.
I don’t have a board yet so this was a ratchet strap and duct tape test run on a SUP foil board. 
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Yes that is great. Thank you for sharing. Nice sound that flipsky 2 stroke engine
This motivates more and more
You are right with 3 accumulations per revolution, but the rest is wrong.
It is and remains a 6 or 12 pole depending on the magnet structure.
The magnetic offset in the middle of the rotor is not good, at least not if the 18n stator does not have this offset, but is running at full length.
For me then a wrong construction, because the engine can never have its maximum possible performance.
Greetings Frank
Awesome man! Ive been down the nose heavy, ratchet strap road before. Much easier to ride when you get the battery under your feet on the next board.
So one key difference between our setups seems to be that yours is 14S and mine is 12S. Also my Flier 400 is the boat version but it is not red but just came wrapped in the black heatshrink with watercooling blocks inside.
Aside from that you also have the Maytech remote.
It sounded really quiet (over that leaf blower in the back ground). Did you notice any rough sounds or sync issues? Have you ever had the motor get stuck and not spin when you hit the throttle until you rotate the motor shaft by hand slightly?
this is a contradiction, either you need 3 ERPM per RPM (so 6 Pole) or 6 ERPM per RPM (so 12 Pole).
And the Pictures clearly show 6 magnets, so 6 Pols = 3 Polpairs.
3x South Pol
3x North Pol =
6 Pol 
Greetings Frank
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