Power Systems - Discussion

[dieselracer]

Originally Posted by Helipsyko

What flight time do you get with the 1915 and 3300 packs? Flying style?
I have one on the way, and can not decide to stretch or not.

I haven't flown any 3200 or 3300 yet. But i have only flown the 3000MAh wtih 2400HS. I fly for 4 minutes hard 3D and i take off less then 80%.

[dkirsch1971]

I am trying to use (2) 14.8v lipos in series to run this combo. Basically I am running an 8s. The batteries have a c rating of 15(or so they say) when spoiling up it starts up find then it shuts down. The batteries are fully charged. Any ideas on how to fix? Or is the c rating to low to run this motor/esc combo.

Please HELP...

[GenReaper]

I would like to know what thoughts people have with motor selection.

I will be running 10S - 5S1P3700 packs.

What size 4025 motor would be best to run in fixed end point mode on a CC85HV speedy?

What gearing would be recomended ?

Thanks in advance.

[ka7cse]

Has anybody tried running two 6S1P 25C 3000mAH packs in parallel on a 600E?

Mike

[razeyoshi]

Originally Posted by ka7cse

Has anybody tried running two 6S1P 25C 3000mAH packs in parallel on a 600E?

Mike

I haven't yet but I know it will work. Thats what I'm waiting on to get here. As long as the C rating isn't a peak rating it will work fine. I plan on using them parallel until I get a ESC and motor combo for 12s then running them series...

[Cleared2Engage]

align 650 with hv-85
I am trying to use (2) 14.8v lipos in series to run this combo. Basically I am running an 8s. The batteries have a c rating of 15(or so they say) when spoiling up it starts up find then it shuts down. The batteries are fully charged. Any ideas on how to fix? Or is the c rating to low to run this motor/esc combo.

Please HELP...

15C? That does sound a little low. Are these new batteries or have you had them for a while? Moreover, what mAH are the batteries rated at and what is your setup (motor, pinion, etc). Also check your settings on the esc to make sure the voltage cutoff is set correctly (maybe it's set to 6 cell??)

[nightflyr]

Originally Posted by GenReaper

I would like to know what thoughts people have with motor selection.

I will be running 10S - 5S1P3700 packs.

What size 4025 motor would be best to run in fixed end point mode on a CC85HV speedy?

What gearing would be recomended ?

Thanks in advance.

I had a Scorpion 4025-890 on 12T pinion ran like a champ with 10S .

nightflyr

[razeyoshi]

Originally Posted by dkirsch1971

I am trying to use (2) 14.8v lipos in series to run this combo. Basically I am running an 8s. The batteries have a c rating of 15(or so they say) when spoiling up it starts up find then it shuts down. The batteries are fully charged. Any ideas on how to fix? Or is the c rating to low to run this motor/esc combo.

Please HELP...

Sounds like LVC is kickin in. Make sure your esc is set for 8s or auto Low Voltage Cutoff detection... 15c is really low, good for hovering not good for anything else. Especially if the 15c is a peak rating...

[Rogman88]

I've got some 40C 6s zippys on the way and was wondering if I would be able to tell much difference between 40C and 20C running a 12S system. I've done some research and it seems 12S is so much easier on the batteries that they don't get hot, are more efficient etc that I could get away with say 20c batts that would be 974g vrs 1044 grams or 70 grams (2 ounces) lighter bird (turnigy batts).
I notice a huge difference in 20C vrs 40C in 3s 2200mah and 6S 5000mah packs but woud I notice that much difference in 12S pack thats much easier on the packs?
I ask because I've got 40C batts coming but want to order another matched set and am wondering if I should try a 20C set to see if the heli will fly "lighter". Also I don't think 2 ounce change up front would affect COG but don't want to have to shift wieght around the heli everytime I switch packs.
What do you guys think?

[razeyoshi]

You will not notice as huge a difference like you did with the 6s setup. When you double your voltage your need for current is cut in half to make the same power.

Higher C rating batteries generally cost more. I own a pair expensive 40c batteries and a pair of cheap 25c batteries. In my opinion the cost of the expensive batteries (about double the price) was not worth the minimal performance gain achieved. Thats for you to decide though it's your money and someone else may disagree with me in this thread.

[helichoper]

I have 20 c discharge 10 cell batteries for my 600 and some 30c as well and i can sure notice more power in the 30c batteries when your pushing it.

[Trnquill]

Originally Posted by razeyoshi

Higher C rating batteries generally cost more.

In HobbyCity the difference in price between 20C and 40C 6S 2650mAh packs is $18. Not a biggie. (of course the different in percents is roughly equal to that of more expensive packs).

[Olgierd]

Hi guys,
I was studding tons of threads for a while and I think I will upgrade my t-rex 600 to nue 1912/1Y and ICE HV 80. I will go with Turnigy 2x5s 3300 30C or 3600 30C. I still wonder if it worth to go to 8S with nue 1910/1Y.

I think setup 6s or 8s for 600 electrics are not as efficient and appropriate as 10S. The lover count of battery the higher amperes go through whole system. This mean, there will be more heat lost (W=I^2*R) and more stress on battery.

What do you guys thinks?

[razeyoshi]

I have to make a correction to the reply I made earlier.

The cheap batteries I have are: $63.87 each
RC Battery 3000mAh 22.2v 35C Lipo 6S akku (from ebay)
http://cgi.ebay.com/RC-Battery-3000m...item20aefda905

The expensive batteries I have are: $155.95 each
HYPERION G3 VX 22.2V 6S 3300 MAH 35C/65C LIPOLY PACK (from helidirect)
http://www.helidirect.com/advanced_s...1&inc_subcat=1

I'm also using a scorpion HK-4035 motor on my Rex 600... With these two sets of batteries I would go with the generic ebay brand everytime right now. It's $128 for two. With the hyperions it's $156 for just one. Thats $28 cheaper when buying two instead of one. I will have to wait and see how long the generic batteries last. Don't get me wrong, the hyperions are better but for well over double the cost when I don't really have any bogging with the cheaper batteries...

I apologize for the earlier post i thought my cheap batteries were 20c. The sticker on them say 35C + 3000 mAh. Thats probably why I could not tell a difference in performace...

*CHEAP BATTERIES ARE STARTING TO PUFF!

[Rogman88]

Originally Posted by Trnquill

In HobbyCity the difference in price between 20C and 40C 6S 2650mAh packs is $18. Not a biggie. (of course the different in percents is roughly equal to that of more expensive packs).

Yep, I'm not worried about 18$ in price. I do however like a light bird with alot of "pop" when I stick bang So I'm just wondering if the efficiency/rpm/power delivery is such that I can get away with saving a couple of ounces on lower C batts then It may be worth a try.

[blackhawk_down2002]

Hey yall, I have been browsing through alot of threads about the crappy align electronics and I have a question for those of you who can help me out.

My stock align 100A esc shit itself on me after 2 flights, it was acting wierd right out of the box and I had planned on replacing it soon anyway but now I have too, so I got on ebay and ordered a CC ICE 100.

My question is about power consumption, I do not know if I should keep the stock 6amp bec hooked up, or remove it and go with the 5amp that the ICE has internal. I do not know what my amp loads will be and need your advise.

I am running 3 each Align DS620 cyclic servos, Align DS650 Tail, Align GP750 Gyro, AR 7000 receiver, and am about to install the FMA Co-Pilot 2.

Do you think I will have enough room with just 5amps or should I stay with 6amps?

Thanks Josh

[razeyoshi]

I have always noticed a faster servo response especially in cyclic with an external BEC...

[Finless]

Go with the 5amp that comes with the CC ESC.

Bob

[Tim15R]

can somebody explain to a newby about batteries and stuff, motor kV.. important stuff lol...... Just need to know what I want before I go buying batteries...

[rceccleston]

Originally Posted by blackhawk_down2002

Hey yall, I have been browsing through alot of threads about the crappy align electronics and I have a question for those of you who can help me out.

My stock align 100A esc shit itself on me after 2 flights, it was acting wierd right out of the box and I had planned on replacing it soon anyway but now I have too, so I got on ebay and ordered a CC ICE 100.

My question is about power consumption, I do not know if I should keep the stock 6amp bec hooked up, or remove it and go with the 5amp that the ICE has internal. I do not know what my amp loads will be and need your advise.

I am running 3 each Align DS620 cyclic servos, Align DS650 Tail, Align GP750 Gyro, AR 7000 receiver, and am about to install the FMA Co-Pilot 2.

Do you think I will have enough room with just 5amps or should I stay with 6amps?

Thanks Josh

The 5 amp rating of the internal switching is for the burst, so the continuous is much lower, about 3 amps.

Many who have tried running the internal switch BEC, when they were first released, have had brown outs which resulted in crashes.

Recommend disconnecting the red wire and continue running the Align regulator and rx pack or CC BEC Pro.