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HomeAircraftHelicopterMain Discussion › Cheap generator to run new gen chargers..1000w???
04-21-2011 05:32 PM  7 years agoPost 121
rstacy

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Rochester, NY

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I'm with you on this Benny!
The Honda has a better reputation and is cheaper.

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04-21-2011 05:50 PM  7 years agoPost 122
Dr.Ben

rrMaster

Richmond, VA, USA

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The Harbor Freight runs fine but it has two issues. First, it's not an inverter generator, so you need to think about what you plug into it. Second, it runs smoothly under a pretty decent load, but it does not cope well when the load tapers off as the charge ends. Mine would always start to surge and hunt a little in the last 1/3 of the charge cycle. The Honda I have cost 7 times as much, and I don't regret a penny that was spent.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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04-21-2011 06:10 PM  7 years agoPost 123
altima1779

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Toledo, oh u.s

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I got the harbor freight and I also just went out and bought a 100 amp hour deep cycle. My plan is to charge off the battery and charge it off the gene as needed. What can I expect to be able to pull out of the deep cycle before the voltage drops too low for the chargers? I will be runruning 12s 5000 packs, maybee 6 to 8 charges? If that is the case I will probably not evev need to run the gene.

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04-21-2011 06:23 PM  7 years agoPost 124
psych-lick

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Portland, OR

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expect to not discharge more than 50 amp hours from the battery.
a 12S5000 (assuming 100% discharged) will require 20 amp hours per charge. 3S 5000 = 5 amp hours

So you will get about 2.5 charges before you need to recharge the deep cycle battery.

-Jeff T.

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04-21-2011 06:24 PM  7 years agoPost 125
red_z06

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Dumont, NJ

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For 12v 80Ah battery, you get 960Wh

Your 12s5000 pack needs 50.4v at 4Ah (80%) x 120% (efficiency loss during charge added) = 242Wh.
You should get about 3 full charges from a deep cycle or 6 6s5ah packs.

www.JustinJee.com

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04-21-2011 07:13 PM  7 years agoPost 126
asm

rrVeteran

California

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Also want to point out, the deeper you discharge a deep cycle each time, the shorter its life span is going to be. This is especially true for the typical WalMart, Autozone deept cycle Pb. Now, if you get Golf Cart Pb, it's going to better. But, Golf Cart Pb also cost more and much heavier than the auto part store's offering.

B

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04-21-2011 07:41 PM  7 years agoPost 127
AirWolfRC

rrProfessor

42½ N, 83½ W

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A 100AH 12V battery fully charged has 100 x 12 = 1200 Watt Hours
or 4.32 megajoules . . . this includes advertising optimism

A 12S 5000 pack needs 12 x 3.7V x 5.000 = 222 Watt Hours to charge full

Add for charger efficiency losses (as much as 30%-40%),
Subtract for charge still left in the pack.

Take it from there . . .

. . . . OR . . . you can hook up that pack to a generator on a stationary bicycle and peddle away vigorously for the next 1 - 1.5 hours

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04-21-2011 07:53 PM  7 years agoPost 128
Band1086

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Kennewick, Wa. USA

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Another consideration is normal PB batts, even deep cycles, drop voltage fairly quickly as they are discharged, so you'll have to set your charger to it's lowest incoming voltage setting, otherwise it will kick out due to low input V. Or get an Odyssey group 31 PB, as they hold their voltage down to about 80% discharge from what I understand, but very expensive and heavy, very long lasting too though.

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04-21-2011 08:29 PM  7 years agoPost 129
altima1779

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Toledo, oh u.s

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Thanks for all the great info. I guess I will bring plenty of fuel for the gene and hope it will keep up.

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04-22-2011 02:12 AM  7 years agoPost 130
BladeStrikes

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Shelby TWP,Mi

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Would this work good for a 600W power supply running a 250W iCharger and 150W Turnigy Accu8 charging 6S 5000mAh pack's?I do plan on ditching the Turnigy charger soon and getting another 250W iCharger.

http://www.harborfreight.com/engine...ator-66619.html

.

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04-22-2011 02:14 AM  7 years agoPost 131
BladeStrikes

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Shelby TWP,Mi

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altima1779,
Which Harbor Freight Gen did you get and how much was it?

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04-22-2011 02:44 AM  7 years agoPost 132
Mike Fortin

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USA

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This is the same http://www.harborfreight.com/engine...ator-66619.html

Have Rotors, Will Fly!

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04-22-2011 03:36 AM  7 years agoPost 133
BladeStrikes

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Shelby TWP,Mi

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Can you repost the link Mike,it's not working .

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04-22-2011 03:41 AM  7 years agoPost 134
RPM 1.5

rrKey Veteran

Cape May New Jersey

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Generator
KIPOR GENERATOR IG 1000 = $499.99 on link

Honda was $799.00 for the 1000 and $999.00 for 2000 at Campers World Club pricing????????? Discounted

I would most likely buy a Honda just because they easier to get repaired if it needed to be

But since I have a 7500 generator on RV don't think I need one HE HE HE HE !!!!!!

Ray

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04-22-2011 03:43 AM  7 years agoPost 135
Wave

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Illinois

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Honda was $799.00 for the 1000 and $999.00 for 2000 at Campers World Club pricing????????? Discounted
Nope..just quality.

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04-22-2011 04:02 AM  7 years agoPost 136
altima1779

rrKey Veteran

Toledo, oh u.s

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This is the one i got. Some people including Mike found them for as low as $89.00 I guess you need to find the right coupon, they will not let you use the 20% off coupon so you have to find a coupon with the price listed. I think someone posted in a thread that some magazine had the $89.00 coupon.

http://www.harborfreight.com/engine...ator-66619.html]

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04-22-2011 04:42 AM  7 years agoPost 137
drdot

rrElite Veteran

So. California, Orange County.

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fwiw..

I've gone the deep cycle route for a few years...I fly mostly 450 and 500 size electrics, so the capacity iosn't really an issue...The voltage drop off under load can be a problen, as the charging current allowed drops off as a function of the voltage....I'm not positive (pun), but perhaps someone can chime in as to the usefulness of a moderate sized 12V Pb batt across the output of the non inverter generators...I would think it would act as a capacitor/filter to reduce the ripple/square output voltage to a level manageable by the chargers..All in all, I'm definitely going generator soon...i spend too much replacing the batteries every two years..

That said, a buddy just assembled a 25 V 30 amp capable power supply from two computer 12v boxes...Hooked up to a capable charger and a paraboard, his Honewell generator does a great job...The Mah counter into his 5000 Mah packs goes up faster than the stock market after a bailout!...

John.

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04-22-2011 05:19 AM  7 years agoPost 138
jamming

rrApprentice

rockport,wa

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I have been using a Honda 2000iu for three years for dry camping in my motor home, much less fuel usage than the 5000 watt Onan unit. what makes the Honda the cheapest is the fuel usage is amazing, for the entire fun fly at Brooks or I burned 5 gallons of fuel, and it ran for 10 hours a day at least, running sat dish tv 750 watt microwave and making my wife happy ! Buy one you won't be disappointed, just watch the little tube on the bottom for carb breather, I plugged mine in the dirt and it wouldn't run right.

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04-22-2011 05:56 AM  7 years agoPost 139
Band1086

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Kennewick, Wa. USA

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...The Mah counter into his 5000 Mah packs goes up faster than the stock market after a bailout!
Yeah, I was watching my PL8 charge my TP 5000 6S 65C's today at 40A and it was going up 11-12 MA a second...it really charges fast!
just watch the little tube on the bottom for carb breather, I plugged mine in the dirt and it wouldn't run right

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04-22-2011 07:45 AM  7 years agoPost 140
asm

rrVeteran

California

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.I would think it would act as a capacitor/filter to reduce the ripple/square output voltage to a level manageable by the chargers
That will only work with AC deep cycle battery.

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HomeAircraftHelicopterMain Discussion › Cheap generator to run new gen chargers..1000w???
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