Littlescreamers 63mmwater jacketed Motor

[Steven Vaccaro]

In the meantime, the 650KV will swing a huge prop! On 10S, the no load RPM is 24,050!

I agree, the bigger the prop, the better its efficiency.

[Doby]

I believe Scott is considering higher KV versions in the future. In the meantime, the 650KV will swing a huge prop! On 10S, the no load RPM is 24,050!

Agreed, my LMT 3080 in my Open Mono is a 12T (around 490 KV) and it hauls ass with a very large prop on 10S.

[RandyatBBY]

Scott look at this
Hello Randy,

thank you for the links.

Has the motor a third ball bearing for the can?

The mechanical loads on the motor are much higher in a boat (when the boat is jumping) than in a ducted fan.

Additional you have huge torque peaks in a boat but in a ducted fan and also with an airscrew you have constant torque.
So if a motor works well in a ducted fan or with an airscrew - it is no guarantee that the motor fits the application in a boat.

Plettenberg outrunners and large Hacker outrunner motors have always a third ball bearing to avoid mechanical forces on the rotor. Such a third ball bearing avoid resonance effects and prevent a contact between the rotor can and the stator.
HINT: Plettenberg makes no outrunners for boats, because outrunners have not enough dynamic torque for the torque peaks!

Best regards
Ulf Herder

Schulze Elektronik GmbH
Prenzlauer weg 6
64331 Weiterstadt
Germany

[video200]

There has been a bunch of success wih this motor and kv, so as far as I know this is the kv for now.

Scott, designed the motor as a performance replacement for customers that what to replace modified zenoah motors. On 10s it will have more rpm and on 12s it will have much more rpm.
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depending on how much rpm it looses when loaded it should proove one he.. of a replacement. my zenoah`s run between 12k rpm original up to 18200 race modefyed on 63-70mm props and they move pritty goo

[Steven Vaccaro]

At 75% efficiency its about 18k. It should easily get that kind of efficiency. Otherwise its a 2 pound paper weight.

[RandyatBBY]

At 75% efficiency its about 18k. It should easily get that kind of efficiency. Otherwise its a 2 pound paper weight.

That is what I am looking for 18k RPM, but the amp draw remains to be seen. I need a eagle tree that can handle this setup any ideas? I really need to see what is being pulled, constant draw and spikes.

[Steven Vaccaro]

That is what I am looking for 18k RPM, but the amp draw remains to be seen. I need a eagle tree that can handle this setup any ideas? I really need to see what is being pulled, constant draw and spikes.

Well for testing sake, we can dictate the amp draw.
4500 watts divided by 37 volts is 121 amps. I understand its not exact, but its a start. Prop it for that and you should be ok. A regular eagle tree micro can handle that for testing purposes.

The guys that are testing it are using the hifei 200amp esc. I have the boat version on order.

[Ub Hauled]

Edit: It was a Medusa item... no longer in service.

[Steven Vaccaro]

Randy, have you seen this little fella?

Its pretty cool. Doesn't look like the wire version is available yet. I wouldn't use the deans ones with 120-150 amps.

[RandyatBBY]

I am going to prop small and recharge after the run and see the amp draw. I will also be checking the temps to get it right on firday.

[Brushless55]

I just ordered one. Going to try it in my 42" Cat on 10S

That is what I'm looking to try out!
and these 42" cats should scream and kick some mod Zehn

[Brushless55]

I would also love to Build a Insane Gas Hydro with one of these motor, and run with the $1,000 mod gas motors on 10s, then go 12s to really make em grunt

[RandyatBBY]

I ran the Motor in the pro Boat this weekend it ran great with a 455 prop in the 56MPH range and the motor was cold. I tried a biger prop a pitched up 460 it cavitated and needs a lot more testing . Videos soon it is up loading at this point.

For any one that needs a motor mount I do make them for any size rail.

[Doby]

Randy, were you running 10S2P?

[RandyatBBY]

Randy, were you running 10S2P?

Yes. RC Polly 5S1P 5000Mah 30C X4