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HelicopterMain Discussion › Whats needed to charge at the field 10S/12S setups
08-04-2013 12:58 AM  4 years agoPost 21
cudaboy_71

rrElite Veteran

sacramento, ca, u.s.

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i've gone back and forth on this 'field charging' issue several times.

i'm at the point where i need to make a decision, too. my current thought is that for my general, going to the club field for a few hours (4-5) to hang with the guys and get in some good flights, money is better spent on packs. now, this may or may not work for you, depending on how many helis you have.

i have a 600 and a 700. i currently have 2 sets of packs for the 600 and one set for the 700. this gives me 3 flights (duh).

now, i could spend $600 on a generator. i already have two decent chargers. but, they can only charge up to 7 amps each. so, i really need a coupla new charges as well to effectively field charge (an hour per charge is a long time when you are out of packs). powerlab8 is the top of my list...so another $240-480 depending on if i want one or two. i have a good power supply. if you dont, the ebay server power supplies are cheap. figure on another $50 if you need to make one.

so, a field charging setup will run me $850-$1100 depending on what I get.

even so, i still only have 1 set for the 700. so, factor in another $300 to have 2x per heli.

so, now i'm in for $1500

pros: i can pretty well fly as long as i want.
cons: i have to haul a generator, power supplies, charger(s) out; deal with charging; necessarily need to charge above 1C which uses up cycles (debate if you like. but, that's my experience)

OR

i can take that $1500 and buy enough batteries to have 4x flights on each heli. that's 8 flights per trip to the field.

pros: i don't have to lug out all the charging equipment; i can charge at home at 1C, i can just fly rather than babysitting a charging station
cons: may not be such a good solution for all day events; i don't have a generator (i admit, a generator is a handy thing to own aside from field charging)

anyhow, like i said, i waffle back and forth. the good thing is i have a deep cycle battery than can charge 4 5000mah 6s packs at 1C at the field currently before it runs out of juice. so, another argument for just investing in batteries is i can just buy packs as i can afford them, rather than dumping $1500 at once--which i can't do right now. i also have an alcohol burner. so, i can really fly as long as i want currently.

if it ain't broke, break it.

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08-04-2013 01:09 AM  4 years agoPost 22
unclejane

rrElite Veteran

santa fe, NM, USA

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I do a combo of that. 4 flight packs charged at home then 1 of my 3010Bs and one deep cycle batt. That way I have 4 flights in the hole already so I don't need a personal nuke with me to fill in more flights.

LS

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08-04-2013 03:47 AM  4 years agoPost 23
pctomlin

rrVeteran

Texas

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I have the opposite opinion of the 2000w Champion inverter generator. I have been using mine for two seasons now and it has run great and is very quiet. Advertised at 53 db if I remember correctly. I can run a PL8 at 30 amps, a 306B at 20 amps along with a 20" box fan at the same time, adds up to about 1200w on the gennie with no problem.

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08-04-2013 03:52 AM  4 years agoPost 24
FlyAway02

rrApprentice

Jasper, Indiana USA

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My dad has a champion 2000w. Yes it surges, and it's very loud. But, we are using it To power our cabin. (Air conditioning, mainly.) And many power tools. But, very solid.

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08-04-2013 02:09 PM  4 years agoPost 25
unclejane

rrElite Veteran

santa fe, NM, USA

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so, another argument for just investing in batteries is i can just buy packs as i can afford them, rather than dumping $1500 at once--which i can't do right now. i also have an alcohol burner. so, i can really fly as long as i want currently.
One thing I didn't mention before, but I suppose is kind of obvious. With extra flight packs, if you rotate them diligently, you'll get a longer lifetime out of the group of them. That is, instead of say 100 cycles on just one pack, you'll spread that 100 cycles fairly evenly out over say 4 packs.

I still have the same flight packs from 3 years ago when I built my first electric (trex 700E) and they haven't diminished in any way that I can detect yet. So the investment lasts longer.

And it's worth it to not have to haul a personal nuke plant with you to the field, and instead just a box of lightweight LiPos.

I get 17 minutes flight time out of one tank on my Whippy nitro, so I've all but lost interest in my electric fleet nowadays . But when I do fly the E's, the rotating pack thing is the way to go.

LS

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08-04-2013 02:24 PM  4 years agoPost 26
HeliNutAndy

rrKey Veteran

worcester, MA USA

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I have 5 10S packs that I charge at home before I go to the field. I then take my generator, charger, and power supply to the field. I have been flying non stop this weekend and this setup has been perfect so far. The cost of my cheapo setup is:

Voltz 1000w charger $150
Parallel charging board $20
540 watt power supply $60
800 watt generator $100
5 batteries(Thor) $700

For a little over one thousand dollars I can fly all day. I'm expecting the cheap generator to most likely crap out but I have a neighbor that has been using one for months(not for rc) with no issues. I had no plans of purchasing a generator this week but after talking to my neighbor I figured what the heck it's only $100 which is less than the cost of a lipo pack.

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HelicopterMain Discussion › Whats needed to charge at the field 10S/12S setups
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