castle 1515 2200 kv motors

[rad35]

I am building a 48 in. mono hull putting twin drives in have cc 1515 2200 kv motors how do i calculate what the amp draw will be and what size props might work with this set up looking at using seeking 180 esc's on 6's

[Fluid]

You can't "calculate" the amp draw. You will have to rely on the experiences of others. Unfortunately, that motor is totally wrong for that boat, especially on 6S. For example my 1515/1Y on 6S drew over 250 amps in a lightweight SAW boat, and that used a relatively small prop. Too, it generated a lot of heat in under 30 seconds of running.

Don't run twin drives in a 48" mono unless you have plenty of FE experience. Actually a 48" mono is a very poor choice for an FE newbie, it is a complex, expensive build. I strongly recommend that you build a smaller ~30" mono first to learn how to set up a mono. You will thank me later.

if you must build the big mono, use a large single motor like the Castle 2028 on 10S power. Set up right this can give you a fast, reliable, fun model. Remember that the three pillars of FE boats are speed, low cost and reliability - choose any two. A twin mono will be harder to build and be much more prone to failure. Sorry to rain on your parade, but what you propose would be a challenge for a highly experienced builder.


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[rad35]

ahh i have the motors and one was in a spartan but esc died was running a 645 prop did get a little warm with that. i was also thinking of putting in 2028's 750 kv on 8-10's and prather 275 props 300 amp esc's dont know on this setup might be better. thanx for the info ya im still learning this stuff any help is greatly appriciated. im kinda stuck whit the twin drives as they were in the hull when i got it just trying to make the best of it as a play around boat. have a new 65 in on the way can maybe set that up better.

[photohoward1]

275 prop is way to big. Head Fluids advice.


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[rad35]

is that to big for the motor or to big for twin setup? don't understand the twin sizing yet i know its not half of a single setup that has been proven to work.???

[rad35]

is that to big for the motor or to big for twin setup? don't understand the twin sizing yet i know its not half of a single setup that has been proven to work.???
im not looking to get super speed as i have lake huron in my back yard it is not usually flat water most of the time it 1-2 in chop or 6 in rollers have had my spartan up to 60-70 a few times but not very often as the light weight of that boat dosent like to stay in the water unless calm and flat LOL.

[kfxguy]

If you have no choice with the twin drive because it's already built, then use some to power 4050's or 4060's. The cc 1515 is a bad choice like fluid said.

[rad35]

ok if i go with say 2 4074's should i go with a lower kv and more volts or higher kv less volts props i know i will have to try different one's maybe start with something like octura 645's and see if they will push it thank you for the input.

[srislash]

ok if i go with say 2 4074's should i go with a lower kv and more volts or higher kv less volts props i know i will have to try different one's maybe start with something like octura 645's and see if they will push it thank you for the input.

You really won't want 645's on a mono period. They have too much lift and will create some rude drive if characteristics. A hull that size would really just be best suited to 1 Castle 2028 and a 457 Octura prop. 8-10s and a 240 amp ESC.

BUT, if you are insistent on a twin setup, then I would go Octura 447's and TP 4050(4082) motors. The Kv would depend on what you have for batteries or are willing to buy. Remember that a twin is pretty much double the cost as a single.

So what do you think? Do you have a budget in mind?
Shawn

[rad35]

The boat was given to me so i can put alot into it as it is a test for a bigger one i have coming. So 4050's 1330 kv on 8-10's and 447 would be a good place to start? want to keep cost under 3k.

[srislash]

Yes 8s would be fine. To give you an idea, this boat is a 40" gas boat converted to FE running 8s on 4040(4074) TP's Thru 442's https://youtu.be/6-KjgtRim_Q

[rad35]

looks like a nice setup definently gets up and go's think that will work for my setup thank you for the info.