Neu 1515 1Y, CC 240, Twin Cat - Amps?

[Fruity]

Guys, I am after some help, we are set up to run

Neu 1515 1Y's
Castle Hydra 240's
Pack = 5S 5000mAh 30c ( still to Purchase)
Prop = X442 or X447 Left & Right

Hull = 110cm Twin Powered Cat

I want to know more about what amps we will be pulling so I can make the best decision on the packs we need.

Does anyone have any data logged infor from a set up the same or very close to this?

All help is greatly appreciated.

[Diegoboy]

43" is a big cat. Get the best packs that you can my Friend.

[Fruity]

Packs

Well, we are looking at the G3 Hyperion's, 6500mah 35C rated. should be able to do over 200A constant (on paper) but I am interested to see if anyone has a similar set up, even a single of the set up on a mono?

[Boatman]

I would make a educated with experience guess that with 5S on your setup with 442 props you will be 110-140 amps per side. With the same 5S and 447 props you will likely see 140-170amps. I have no logged data but have a bit of time with those motors and large cat setups. Best bet is to send Andrew at fastelectrics an email. I dont know how he gets his calculations but he pulls some stuff out that I never expect.

[Boatman]

OR, split the diff. and go with carbon 45mm props on 5S. Speed, runtime, and less abuse to those hydra's.:)

[Fruity]

Boatman,
funny you mention Andrew, he is building this boat for us, I also have the carbon 45's to try.

The main reason for asking is I have a lot of differnt recommendations as far as pack size and discharge rate, but there is always plent of help on here, so I am keen to see who has a similar set up and the results.

Thanks for the feedback, it is a very similar opinion to mine.

[tiletony]

if you want soem 6s packs i have 2 that are 2600mah each i have been running in parell but there are to heavy for my boat. i need 2p 3s to run in series(which i had before but they are sitting at the bottom of a pond) any way the packs are hyperion 35c i have are 2 cycles on through them i just bought them from a local hobby shop about 2 weeks ago ..just to large for me. i would sell them or trade then for 2 3s packs...

[toysRme]

Fruity, Im surprised that Andy didnt talk you into the 1518-1.5D for your twin cat project.
Im running the 1515-1Y on a 240 with M447 prop and the constant amps are around 130 to 150 with spikes up to 180A, but this is with 4S not 5S
Im building a HPR115 with twin 1518'S on 5S, so very similar to your cat.
Good luck with your project.

[Rumdog]

1515 1y's on 5s?! That's over 40,000 unloaded rpm right? Seems a bit high.

[bonewar]

Fruity

Whats this 110cm cat Andrewg is building for you?
Got me very interested?
Mate he is a fountain of information when it comes to fast rc boats.
Andrew has help me build 2 boats so far and the 3rd is on the way.

Like Boatman said, I would just send Andrew an email and he will answer all of you question.
I think your cat is going to be a screamer. Good luck and keep us informed.

Cheers BONEWAR

[Fruity]

Bonewar,
The cat is called a MasoKat, it retails for just under $500 Aus. I have not seen one run, but Andrew tells me they run very nicely.

The Cat is actually for a friend, we are trying to get some good speed out of it, around 75 MPH. Will have fairly short run times, but plenty of speed (hopefully).

I have discussed packs & Amps with Andrew, but I always like to take in info from other sources as well.

I am also getting closer to finishing my twin Maritimo, just need to assemble shafts and a few tidy ups pieces, then I can test.

How is the Maritimo with the tunnel flap coming along?

Cheers...Tim.

[bonewar]

Tim,

Do you have any pictures of this Masokat?

The M12 , I'm up to glassing in the carbon fiber floor , and the new hatch.
Just waiting on the rain to go away. (2 x cyclones dumping there load on us.)
Then i will finish off the fiber glassing.

Got any pictures of your Timo we can have a look at.
And thanks for the info.
Rick