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01-15-2006 09:51 PM  13 years ago
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slider46

rrProfessor

Ocala Florida

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Flight time........
I recently switched over to Polyquest 2s lipos 1500 7.4 volt on my v3 and it flies really well on them. I have the gold motor, stock tail motor and long blades cut down 25 mm and I have a GWS PHA 01 gyro/mixer instead of the humming board. I'm also flying with the jet ranger fuse on. I just got 19 minutes in the air hovering and moving around slowly. and the motors were barely warm...
What kind of air time is eveyone else getting with your battery setups and mods?
Tom..... No "D" flying....
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01-15-2006 11:21 PM  13 years ago
habibber

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Chandler, AZ

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I have a V2 with the century brushless motor with stock tail and blades. Also have the aftermarket frame. I am running cheap and heavy 2C 1500 Electrifly Lipo's that I have from my plane and get around 23 minutes of hover / FF time out of a pack. The motor is slightly warm but nothing hot at all.
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01-16-2006 12:48 AM  13 years ago
Megcor

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Monroe, Wa

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Spooldown sackes
Is your spooldown sackes getting worse? I have been thinking about purchasing a sift but a little concerned about the sackes.

Have you tried to do any thing to correct the problem?

Nice vid...
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01-16-2006 06:36 AM  13 years ago
garage_flyer

rrKey Veteran

Elk Grove, CA (Sacramento area) U.S.

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Habibber, I used the same battery and got the same result. I now use GWS 1300. Motor run even cooler, everything else is the same
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01-16-2006 01:58 PM  13 years ago
Normsthename

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Leicester, UK

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I have just bought a 2S 7.4v 1600mah Lipo
It weighs 3/4 of the standard Birdseed battery, and I have also removed surplus battery barckets that held the birdseed in, so it is now lighter than a standard setup.
I have also cut the blades down by 25mm, it just seems a little underpowered.
Just hovering is using a good 3/4 stick movement, with not a lot of pitch leftover.
Is this normal?
I was thinking the 'missing' 1v drop was hindering it, I know Lipos are much more voltage constant.
Sorry Skeeter-pilot, I knew I should have gone for the 3S Lipo but I was talked into it by the guy in the Heli shop......

Andy
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01-17-2006 05:39 AM  13 years ago
garage_flyer

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Elk Grove, CA (Sacramento area) U.S.

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Just like you said, the 25mm chop job is good for 3S Lipo since the higher voltage will give you higher head speed. I use 2S 1300. The bird is much lighter than stock. It only took 40% throttle to lift with stock blades, and the low head speed made it very sensitive. I trimmed the blades 20mm and now it lifts at 55% throttle. With your 1600 packs I would do 15mm trim job on those stock blades.
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01-17-2006 01:05 PM  13 years ago
Normsthename

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Leicester, UK

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Thanks
I think I will bite the bullet, and fit some heatsinks to the Hummingbird and try a 3S Lipo on it, as per Skeeter Pilots instructions.........I can only blow it up....
I have a Tensor 4D Biplane which has a 3S 850mah Lipo which weighs next to nothing!
I will have to cut the standard JST connector off, and solder a couple of single gold connectors in place.
Reason I cut the blades down was because I split one blade, so I thought I would give it a try, it has made it more stable, but needs a bit more Oomph.
Hopefully with the 3S battery fitted, it will increase the headspeed, and make it a bit more lively!

Andy
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01-17-2006 04:58 PM  13 years ago
pigs dont fly

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City, State - Country

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3s 1500's = 30 min+ Watch the BEC on the Hummingboard though, they dont like 3s. Throttle closed off and Whiz the cyclic stick around for a few moments and see what happens....Get ready to catch it.

I run an extra ESC just for its BEC, with my Hummingboard and 3s.
Warning...This hobby is very addictive and may damage your wealth
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01-17-2006 05:55 PM  13 years ago
Normsthename

rrNovice

Leicester, UK

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3s 1500's = 30 min+ Watch the BEC on the Hummingboard though, they dont like 3s. Throttle closed off and Whiz the cyclic stick around for a few moments and see what happens....Get ready to catch it.

I run an extra ESC just for its BEC, with my Hummingboard and 3s.
I have the Hummingbird V3 with the Purple Five-in-one unit.
I thought they were O.K to use with a 3S battery???

Andy
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01-17-2006 06:26 PM  13 years ago
pigs dont fly

rrKey Veteran

City, State - Country

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Hi again
Try it and see, I know this happens with the 3 and 4 in 1's as I tested a heap of them in my local hobby shop the year before last. Whiz the cyclic round for a few moments and the servos go in all directions and the motor goes full power.
I dont know how you would run a seperate BEC to the 5 in 1 RX if it doesnt work, as its part of the unit. But if you know someone thats got one and its good for 3s, then no worries.

Oh and hope you have heatsinks, and a GWS IPS direct drive tail or Century high authority tail motor, as the stock little tiny tail motors fry only after a few flights on 3s. Plus (I think this will be the same for the 5 in 1) if one of you motors dies and you keep on trying to make it turn with the throttle stick, the Hummingboard will burn out (with flames too!)...one of mine caught fire...doh! expensive mistake.

But after all the downsides to 3s, I wouldnt hesitate on trying to get your heli flying with them, they make a HUGE difference.
Warning...This hobby is very addictive and may damage your wealth
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