Number cells/Motor Kv/Prop Size/Hull Size

[RayR]

That is the speedo I referenced. these lipo's should do fine:

http://www.hobbyking.com/hobbycity/s..._40C_Lipo_Pack

You need 2 (two) of them.

All the best,

Ray

[agressive1]

Ok how come they are named different, kinda weird, would they be copys.

Sorry kinda new to all this

[RayR]

the Turnigy speedo is made by Hobbywing, just rebadged. They are identical.

[agressive1]

Ok

Would you know how long my runtimes would be and what speeds i should be getting?

[RayR]

Mid to upper 40's and right on the edge of your 10 minute requirement.

You may want to consider the 6500 Mah cells from Hyperion to maximize the runtime, but they are significantly more expensive.

[m4a1usr]

I personaly dont think your going to get a reliable 10 min run time out of a Feigao motor in anything but a very, very mild setup. Most Chinese motors only have an eff. rating in the low 80's if that in all honesty. So if you are running a 22.2 volt system and plan on no more then 80 amps continous or average, doesnt matter for the most part, that means you are going to be generating 1776 watts. 80% of that is 222 watts. Thats what the motor is going to need to disipate. They dont have openings in the ends to remove the heat surrounding the rotor. A water cooling shell will do some work but not the bulk of it. I bet the motor doesnt last as long you may expect it to. Just my opinion, my 2 cents.

John

[agressive1]

Thanks John and Ray

I have been told this setup by another person.

To run any 5000mah 14.4v LIPO batterys in parallel x2
Feigao 2073kv 8xl
The same ESC as Turnigy just a rebadged one
42mm propeller

What do you think of that?

What

[m4a1usr]

Thanks John and Ray

I have been told this setup by another person.

To run any 5000mah 14.4v LIPO batterys in parallel x2
Feigao 2073kv 8xl
The same ESC as Turnigy just a rebadged one
42mm propeller

What do you think of that?

What

Not going to be anything fast on a 540 8XL can. Just not enough power to push a 37" hull the speeds you want. If you want to go with a chi motor at least use something along the lines of what Ray recommended. The 580L or maybe a Keda45 but again if you want some decent speed, in the 40's, and want a 10 min run time you should look at the larger outrunners available. The Little Screamer, or a Scorpian, motors like those. Lots of power to push that hull around all day long. As far as a speedo have you looked at the himodel gx200? You can find them for about $60. A large outrunner will be about $160 or less. Those 2 will get that hull up on plane. And you can move up to a realistic prop. Probably something in the 50 to 55mm range. OSE has just become a dealer for Scorpian so ask Steve what an HK4025-1100kv will cost you. Thats 2200 watts on 6S at 24k rpm.

John

[agressive1]

John with that setup your telling me im guessing it will be quicker then the above 580xl setup i was told, but how will the batterys last?

Ill look further into this as well and see whats easily available for me down in Australia.

[m4a1usr]

John with that setup your telling me im guessing it will be quicker then the above 580xl setup i was told, but how will the batterys last?

Ill look further into this as well and see whats easily available for me down in Australia.

I dont think it will necessarily be any quicker with a 580 size can if you prop them the same and the kv is similar, but the outrunner will remain cooler without a doubt. And with a larger rotor you should have a greater selection of props to choose from when perfecting your setup.

John

[RayR]

....

[agressive1]

Ok

So im going to go for a 580 sized motor and the ESC as recommended above.

[agressive1]

Ok, So my final setup will be something like this

Feigao 580 12L
Turnigy 180A ESC
Turnigy 22.2v 6S 5000mah LIPO X2 in Parallel
X450 Prop or something bit bigger

How does this sound?

Also what type of servo is recommended, metal geared or plastic?

[Mel279]

Ok, So my final setup will be something like this

Feigao 580 12L
Turnigy 180A ESC
Turnigy 22.2v 6S 5000mah LIPO X2 in Parallel
X450 Prop or something bit bigger

How does this sound?

Also what type of servo is recommended, metal geared or plastic?

Thats a fine setup, try it first with that prop, if it run slow then u can change to a bigger prop, but remember to check the temp after u run it for a minute. Go for a high torque metal gear servo.

[Mel279]

Ok, So my final setup will be something like this

Feigao 580 12L
Turnigy 180A ESC
Turnigy 22.2v 6S 5000mah LIPO X2 in Parallel
X450 Prop or something bit bigger

How does this sound?

Also what type of servo is recommended, metal geared or plastic?

Thats a fine setup, try it first with that prop, if it run slow then u can change to a bigger prop, but remember to check the temp after u run it for a minute. Go for a high torque metal gear servo.