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Home✈️Aircraft🚁Helicoptere-MikadoLogo 700xx › Xxtreme 700 li-po help please
05-08-2013 01:57 PM  6 years ago
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maxw

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Ipswich Suffolk United Kingdom

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Xxtreme 700 li-po help please
Hi all
Am after some help please
I already have 8x 4400mAh thunder power for another Heli and didn't really want to splash out more

My question is would I be silly using the above and need to get some 5000mAH packs

Any one tried both will I loose quite a bit of flight time as this is a heavy Heli

I know the 4400mAH are quite a bit lighter than the 5000mAH so will help a bit with flight time

I know less weight over mAH helps but would I be loosing too much flight time?

Can any one help please? Any one use or tried both?

Hope you can help guys

Many thanks and would like your input on what best to use

Thanks
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05-08-2013 02:16 PM  6 years ago
SGrim80

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Lehigh Valley, PA

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I get 4:30 using 35c 5000 packs at 2050 headspeed. I'm using about 850 mah a minute.Mikado USA
Team Scorpion!
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05-08-2013 10:24 PM  6 years ago
BobOD

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New York- USA

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I don't know about the xxtreme but the weight benefit of the 4400 outweighed the extra capacity of the 5000 IMO. Based on a 12s trex 700 anyway.Team POP Secret
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05-08-2013 10:54 PM  6 years ago
maxw

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Ipswich Suffolk United Kingdom

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Hi
Thanks for your replies

So are you saying 4400mAh packs could see the same flight times as 5000mAh packs? Due to reduced weight needing less power to lift etc?

Thanks again keep your flight times coming
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05-09-2013 02:29 AM  6 years ago
BobOD

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New York- USA

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I wouldn't say the same flight time. More a compromise weight vs time.Team POP Secret
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05-09-2013 03:53 AM  6 years ago
RyanW

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Edmond, Oklahoma

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I have both 4300 (true 30C) and 5000 (true 50C) on mine. I limit to 3:30 when running the 4300 packs. The timer is set for 4 min on the 5000 packs and I usually take out right at 3900/4000mAh (78~80%)

Because the 4300 packs are 30C instead of 50C, they are a full pound lighter, both packs combined. You can feel this in the air.

My machine is exactly 12lbs RTF w/canopy and 4300 packs and 13lbs with the 5000 packs.

I thought about getting some 4300 50C packs, but the weight savings isn't near as significant.

A note of caution: I don't really recommend "run of the mill 30C" packs for this machine. I run Opti-Power, which have true C ratings and they do that and a lot more. This is evident in the fact 4300mAh x 30C = 129A and the flight data from the Kosmik shows flight averages well above that.
-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos
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05-10-2013 12:56 AM  6 years ago
maxw

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Ipswich Suffolk United Kingdom

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The C rating won't make any difference to me as the packs I have are thunder power 4400mAh 65c and if I got 5000mAh they would be thunder power also at 65C so it would purely be down to mAh and weight

But if I'm only going to loose about 30 seconds I can live with the 4400mAh rather than buy new
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05-10-2013 04:05 AM  6 years ago
BobOD

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New York- USA

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This is evident in the fact 4300mAh x 30C = 129A and the flight data from the Kosmik shows flight averages well above that.
That might be average surge current or something but if you draw 4000mah from a pack in 4 minutes, your average current was 60 amps which is 12C.

4000mah/4min/1000*60 = 60amps

For a 5000mah pack you get:

60a/5000mah*1000 = 12C
Team POP Secret
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05-13-2013 06:35 PM  6 years ago
maj

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united Kingdom

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You gearing up to fly then? Been on your shelf too long :-)

MJ
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05-14-2013 05:14 PM  6 years ago
RyanW

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Edmond, Oklahoma

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You are correct Bob. I am still learning how to read the LogViewer (It has about four different Ah graphs.

I know the graph was mostly over 120A, but need to find it and post it so someone can see what it is averaging.
-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos
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05-14-2013 08:56 PM  6 years ago
Futura SE

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Fayetteville, Arkansas

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Guys putting 4000mah packs on the Logo 700 is a mute point. I had a set and you have to cram them as far forward and bust the balance taps on the frames and the machine still will not piro flat as the CG is still off a tad.

This machine NEEDS 5000's. If you like very low flight time and wobbly piros go ahead.

I even had a old set of Turnigy Nano Puff 4400's (LOL It's true) and they had to go as far forward as possible. It would balance with them but...

Thor 6S 5000 45-65C is Perfect dead center of tray. Thor 7S 4400 65C coming in stock in a day or two is dead center of the tray and same weight as 6S 5000.

Norman Ross Jr.
Team Mikado USA -- Team Insane Canopy -- Team Scorpion -- Team Evo Power Batteries
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05-14-2013 09:13 PM  6 years ago
BobOD

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New York- USA

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The logs are good to glean certain information. But the above equations give the most precise information on the averages. If the logs are reporting a different average, take them with a grain of salt.Team POP Secret
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