Freya 36" 2 x neu 1521 + 2 x castle hv 240

[rogsto]

My latest build...... Should be pretty fast.....??

2 x neu 1521 1D kv 2900 + 2 x castle hydra hv 240
2 x Octura 450/3
Turnigy nano tech 2 x 5S 5000mah 45-90 C
4,8-5 kg

[RaceMechaniX]

First welcome to OSE and a solid build you have there. Yeah, it should be pretty fast, just make sure to sharpen and balance those X450/3's

[rogsto]

Thanks,, oh yeah that is already done...

[DISAR]

nice boat!

[TotalPackage]

Real nice. 450 3's? How does it run with those?

[Killer V]

Freya 36" 2 x neu 1521 + 2 x castle hv 240

That is one smokin build. It has to be insane fast. This can't be your 1st build, with workmanship like that. I would like to see some of your other boats.

Good luck,

Killer V

[rogsto]

Thanks, i have done som test runs, i am going to install a GPS to mesure top speed. So far motors, ESC is cold. I am also going to do more test runs with different props.. Any prop suggestions?

I have som cosmetic issues i will resolve, when it is done i will post new pictures..

It is my 2th build, my first was a 32" cat with neu 1527 1d.

[DISAR]

What Kv are the motors?

[rogsto]

Motors : 1D kv 2900. it should be able to handle 5s lipo, but maybee the props are to large...

[DISAR]

your boat must be very very fast at these rpm with these props.

I wouldn't go any bigger on props, there are some options to try

octuras 447
propshop 4518/3 or 4518/4
HOPF 445/3 or 448

[rogsto]

Yes i would like to go down on prop size, to see if i can get more RPM out of these motors.

It seems that most twin cats use 3 bade props. Cats with single motor use 2 blade props, do you know why?

[DISAR]

Not really, but I think it all depends on the boat setup and water conditions.

Personally, when I setup a boat I test 4-5 propellers to see which gives

better overall handling-stability
better speed
low amps

In most of my boats, (twin 135, DF35" & mean machine) the 3 blade props gave me the best results. It's all about testing. The Octuras need some work on them and then can increase rpm, such as
make the "angle" tongue to a nice round shape
remove some material from the trail edge-backcut

[DISAR]

Hopf also has 448/3, I would try them

[rogsto]

thanks! where can i buy them?

[DINO7]

http://www.hopf-modelltechnik.de/Prop-Schraube-Aluminiun-CNC_1