Power Systems - Discussion

[oldmanflyer]

I am building 600 class heli and would like to know what is the trend now for battery mAh in a 10s setup. Is it still 3300-3700 mAh or 4000-5000 mAh. Thanks for your replys.

[rovpilot26]

I am using 3 different types of packs currently and trying to decide which I like best for my 10S setup...

3300 30C
3600 30C
and 4000 30C

So far the 3600 30C packs are delivering the best balance and performance as far as bang for the buck...

the 4000s are a tad on the nose heavy side, but fly well and give me nearly 8 minutes of mild 3D flight..

I am using the Scorpion 4025-630 on 17 tooth, with the 110HV controller, and taking out around 420-440mAh per minute...

Hope this helps..

[oldmanflyer]

Thankls, I'll get the 3600 30C's, I'll order 4 packs to start.

[tyfries]

hey guys

kind of a noob here but

right now i am bone stock
and i want to do 12 cell
will i notice a diference??
will it be worth the hastle??
how much money and what parts do i need

could i get a 15 ice (castle)
and get thoes y adapters and fly

confused

help plz

[rceccleston]

Originally Posted by tyfries

hey guys

kind of a noob here but

right now i am bone stock
and i want to do 12 cell
will i notice a diference??
will it be worth the hastle??
how much money and what parts do i need

could i get a 15 ice (castle)
and get thoes y adapters and fly

confused

help plz

How to - 12s T-Rex 600 Setup On A Budget.

[K2Freak]

+1

How to - 12s T-Rex 600 Setup On A Budget.


LOVE IT! (Neu 1915 motor helps a bunch!!)

[Freeskiken]

How can a 12s system with 2 6s 3000 to 3600 mAh batteries fly longer that a 6s 5000 mah set up ? Seems that 5000 mAh batteries should fly longer. More capacity. Ken

[IvanC]

Originally Posted by Freeskiken

How can a 12s system with 2 6s 3000 to 3600 mAh batteries fly longer that a 6s 5000 mah set up ? Seems that 5000 mAh batteries should fly longer. More capacity. Ken

It's not only capacity, Ken.

It is stored energy or watt-hours (Wh). A 6S 5000mAh pack is 6*3.8V*5Ah=22.8V*5Ah=114Wh
A 12S 3000mAh pack is 12*3.8V*3Ah=45.6V*3Ah=136.8Wh

Let's assume we fly the same heli equally on 12S and 6S. It can never be equal as different voltage systems are never identical but let's idealize a bit.

If a 6S uses an average of 30A, the equivalent (ideally) setup on 12S will use only 15A - double the voltage and you'll need half the current to produce the same output.

So for the 6S setup we will have (and use) average power of 6*3.8V*30A=22.8V*30A=684W.
The 12S setup will have (and use) 12*3.8V*15A=45.6V*15A=684W - as you see the same power (again, ideally).

The 6S setup will use all of the stored energy in the 6S 5000mAh pack of 114Wh in 114Wh/684W=0.1(7) hours or 10 minutes.
The 12S setup will use all of the stored energy in the 12S 3000mAh pack of 136.8Wh in 136.8Wh/684W=0.2 hours or 12 minutes.

Now, if we used 2x 6S 2500mAh in series for the 12S setup, then the flight time (ideally) would be the same 10 minutes as with the 6S 5000mAh as they have the same stored energy (Wh).

[Freeskiken]

Hi Ivan That was a very good explanation. I have a Raptor 50E and I was using a 10s LiFe packs 2300 mAh. I would only get 4 to 4.5 min. flight time. I switched to 2 - 4s LiPo 5000 mAh packs and I get 6 min. on the the first few test flights. I can fly them longer but was breaking them in. I am building 2- T Rex 600s CF, one with a Neu 1515 2.5 motor and one with a Align BL600M motor. I already have the Phoenix Ice 100 ESCs and motors and 7- 6s 5000 mAh batteries. So I guess I will have to wait until I wear them out or sell them at a later date befor I can go 12s. I like to read about the different power systems. Thanks Ken

[nairbg]

I am wanting to get more informed about the parameters of my heli's performance, so I want to get some kind of a data acquisition system for it.

From reading here, it seems that some ESC's collect a lot of data, and it seems that one could also spend some $$ on a stand-alone data-logger.

How about some discussion about the various data-logging resources and the value of the various data points......

I need some help deciding what system to get........

Also:
Is it worth the effort to change to a different system voltage from 6S for learning to fly basic manouvers and light aerobatics (no 3D)?

[DesJardins]

I do basic flight and light aerobatics such as flips, rolls, short inverted attempts and fast forward flight and I can't imagine going more than 6S... its simply just not needed from what I see.

Also there are plenty of people with a 6S set-up on their 600's ThunderPower 45C's that do very intense 3D where I am located with a 5 minute flight and everything seems to be just fine and they have plenty of power even in a stock elelctronic 600 ESP.

:shrug:
I'm sure there are options but why waste the money if its not needed

[rceccleston]

Originally Posted by Jon DesJardins

I do basic flight and light aerobatics such as flips, rolls, short inverted attempts and fast forward flight and I can't imagine going more than 6S... its simply just not needed from what I see.

As you said, a stock 6s is fine for basic flight and light aerobatics but becomes very inefficient under higher loads during more advance flight and aggressive aerobatics.

Originally Posted by Jon DesJardins

Also there are plenty of people with a 6S set-up on their 600's ThunderPower 45C's that do very intense 3D where I am located with a 5 minute flight and everything seems to be just fine and they have plenty of power even in a stock elelctronic 600 ESP.

:shrug:
I'm sure there are options but why waste the money if its not needed

Have you experienced the difference between a 6s and 12s setup?

Have you compared the temperatures of the motor, esc and packs between both setups?

Have you compared the life cycles of the packs between both setups?

You may find this thread an informative read - How to - 12s T-Rex 600 Setup On A Budget.

[DesJardins]

Originally Posted by rceccleston

As you said, a stock 6s is fine for basic flight and light aerobatics but becomes very inefficient under higher loads during more advance flight and aggressive aerobatics.

yea that is why 6S works for me, but I can see others wanting more.

Originally Posted by rceccleston

Have you experienced the difference between a 6s and 12s setup?

Have you compared the temperatures of the motor, esc and packs between both setups?

Have you compared the life cycles of the packs between both setups?

You may find this thread an informative read - How to - 12s T-Rex 600 Setup On A Budget.

I have not flown a 12S set-up but as in the previous post since I'm no where near the level of pushing the 600 to limits I wouldn't get the true effects that you probably would.

I'm sure the 12S is incredible, I will post a vid of a 600 ESP on stock everything except Edge Main & tail blades on a 6S pack. Very impressive and hard 3D

[wangotaco]

Hi guys,
I have a 12s system. I use two 3000mah, 40c turnigy batteries. My charger is a powerlab8. That is what makes this work. I can perfectly parallel charge 6 batteries from 3.8volts per cell in about 12 'minutes. I get 5 minutes pretty hard 3d flying time. The esc, batteries and motor come down almost cold. The only thing that gets hot is the servos.
-greg

Originally Posted by dieselracer

I charge in Parrallel, with a Blinky on each battery. They palance perfect with each other. we will see how long they last. But so far so good. I am a big 6s guy. You can't beat the 1515 2.5D on 6s with an 11tooth. When lipos are new, they feel almost as strong as my 12s setup i have now. The reason i made the swap was because i was ready to buy new packs, and this was much cheaper for me, I already had the ESC, it was just lipos and the Motor. I paid around 380 bucks for 6 X 6s 3000Mah zippy lipos. And got the 1915 1Y. and so far i like the setup. I will be getting a set of 3200 6s 35c fullymax's next to see how they perform too.

[VDFS]

What mAh battery's ideal for 10s? 3300-4200mah?

I run with 10s 2x5s 3300. Is possible use other packs and heli do not have nose heavy?

My setup

Scorpion 740kv
CC esc
Bec pro
V-bar 5.1 with rjx head
8717's on ciclic and 8900 on tail

Heli have great power but fly only 3:10min


Help me please....

[mstoop]

I'm running 2 each 5s 3600 and the CG is perfect

My setup:

600CF
Viper 700kv
BeastX with RJX Head
Jazz 55-32-10
WR BEC

[HeliJoe]

What brand of lipos are those, and what kind of flight times are you getting?

[funnelcake1999]

iengines guys I have a DLE gass engine that is not being used. I've heard of people using the zenoha 20cc but havn't seen a 600. With a DLE. Are there any conversion kits avaliable. Thanks.