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06-02-2010, 07:21 PM | #41 (permalink) |
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Join Date: May 2006
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6S 5000 packs are the norm for this size heli.
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06-02-2010, 07:26 PM | #42 (permalink) |
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Join Date: Aug 2007
Location: Georgia
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5000mah... how long flight you get? 4 min flight is fine with me.
so 2 2200mah cells wouldnt work in this? I am guessing its rather larger then the trex500
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RAW 580 ,lots of Planes Powered by IX14 AMA 36 yrs. |
06-02-2010, 07:28 PM | #43 (permalink) | |
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Quote:
Most of the brands that have been around much longer and that started manufacturing nito and gas powered helis 20+ years ago, use BLADE size. So as you can see here (I believe Century has been making helis for over 20 years), their electric helis are classed more along blade size. The 550NX using 520mm to 560mm blades and their 620SE using 6210 to 620mm blades. Consequently this 550NX is a fair bit bigger then a T500 for example. It is more of the same size as a 30 nitro (Hawk, Shuttle, Raptor 30, Venture 30), but witha better power to weight ratio then most 50 nitro helis. you will find the bigger they are, the better they fly. |
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06-02-2010, 07:38 PM | #44 (permalink) | |
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Quote:
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06-02-2010, 07:45 PM | #45 (permalink) |
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You can get one of these flying for less than Trex 500...
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06-02-2010, 07:58 PM | #46 (permalink) |
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Join Date: Aug 2007
Location: Georgia
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Well a trex is like $350 for just frame if you find someone selling one. $500 for heli + servos but i like know what servos people are using. i hope someone says some for around $25 a piece.
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RAW 580 ,lots of Planes Powered by IX14 AMA 36 yrs. |
06-03-2010, 04:19 AM | #47 (permalink) |
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I have one Swift with Futaba digital 3151's. $29 each. They work fine.
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06-03-2010, 07:35 AM | #48 (permalink) |
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Join Date: Aug 2007
Location: Georgia
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Thanks, thats not too bad, i was watching the finless build videos for the switf lastnight man this heli looks nice. I know its not the NX version but still man nice and big where things are easy to put together unlike my Blade 400 and blade CP
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RAW 580 ,lots of Planes Powered by IX14 AMA 36 yrs. |
06-03-2010, 09:39 AM | #49 (permalink) | |
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Quote:
For instance you would need at least a 30C 2200 battery pack for a 65A setup
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06-03-2010, 03:02 PM | #50 (permalink) | |
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Location: Georgia
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Quote:
But I do have 40C -50C packs I fly. I think this heli is still bigger then i want, i know bigger flys better but this it might be too big. Like to know more of what all driffrent motors people run.
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RAW 580 ,lots of Planes Powered by IX14 AMA 36 yrs. |
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06-03-2010, 03:03 PM | #51 (permalink) |
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I flew my Swift 16 with the cheap Spektrum DS821 servos. They aren't great, but they flew it fine for over a year. I'd recommend the Hyperion DS20 metal gear digitals as a good mid-price servo that is strong and centers well. I fly them on my Compass Knight.
As for A123 setups, 6 A123 is not enough battery for the Swift. That would be more appropriate for a Trex 500 (425) or Protos. I flew my Swift on 10S A123, with a lower KV motor appropriate for the voltage. 10S A123 is about the same voltage (under load) as 8S lipo. I was getting 6 minute flights on 550mm blades with that configuration. [ame]http://www.youtube.com/watch?v=STM2Jc2kSu4[/ame]
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Chris Boultinghouse |
06-03-2010, 03:41 PM | #52 (permalink) | |
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I will be using a Scorpion 4020-1100 on 6S. I really wanted a 4020-910 but I found a great deal on a used 1100. For a pinion I'll either be using a 9T at 100% or a 10T governed down to 95%. This all could change once I get her in the air. I don't think I need 2100rpm head speed, but it's nice to know I can get there if I want.
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06-03-2010, 06:29 PM | #53 (permalink) | |
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This is a BIG bird, I guess I still not sure about the size. from nose to tail how long is it? wow those hyperions are high price I like the $29 ones better. as long they wont stripe in flight.
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RAW 580 ,lots of Planes Powered by IX14 AMA 36 yrs. |
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06-03-2010, 09:04 PM | #54 (permalink) |
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Join Date: Nov 2009
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Cheap Servos
I second what Chris said. I have Spektrum DS821s on the cyclic on my Swift 16 and they fly just fine. I got 4 brand new on eBay for $65. A lot of people (and stores) buy DX7s systems but don't want the servos that come with them. I have a Hyperion tail servo which is is awesome for the price. At some point I intend to put Hyperions on the cyclic but the 821s are fine for now. Hyperion servos seem quite reasonably priced (under $40 each) for the performance. They are programmable with just a $20 cable needed.
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Rod R Blade mCPX BL2, Blade 180 CFX, Blade 450X, Blade 360 CFX, Oxy 3, Mini Protos, Gaui X7 |
06-03-2010, 10:06 PM | #55 (permalink) |
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Rod, Which Hyperion tail servo are you running? Also which gyro do you have it paired with? I just ordered the Hyperion DS20x-GCD servo and I have a Spartan Quark ready to install.
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06-04-2010, 12:02 AM | #56 (permalink) |
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Join Date: Nov 2009
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Tail Servo
I am running the Hyperion Atlas DS20-GMD with a Spartan DS760. I have the same servo with a Quark on the TR 500 clone that I put together for my son. Amazing precision on the Swift. I was shocked at how good it felt. Right after the first flight I ordered another Hyperion for my son. The EXI is solid but the current servo horn is too short. I have only flown it once with the Quark/DS-20 setup. I love the Spartans. I am just flying around with no 3D so I am not stressing the tail very much. I started with a 401/9254 combo which seemed fine until I flew with the Spartan/Hyperion setup. "Connected" is starting to sound like a cliche but that is the word that comes to mind. I bought the DS760 for $62 on eBay and got the servo on sale for $30 shipped.
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Rod R Blade mCPX BL2, Blade 180 CFX, Blade 450X, Blade 360 CFX, Oxy 3, Mini Protos, Gaui X7 |
06-04-2010, 12:17 AM | #57 (permalink) | |
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Quote:
http://www.rcgroups.com/forums/showp...&postcount=341 It was a single 10 cell brick. Motor was a Neu (I forget which model) about 680kv. I ran a 10T pinion on it. You will want something 800kv or less if you go 10S A123. As cheap as lipos are these days I'm not sure I'd do the A123 setup again, it was probably 200g heavier than a lipo setup. I was right at 6.5 lbs on A123.
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Chris Boultinghouse |
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06-04-2010, 12:32 AM | #58 (permalink) | |
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If you do the math on A123's, you will find that, at the amp draw required to fly these helis, they will only deliver about 2.6V per cell, which is not near their 3.3V nominal ratings. Todays lipos will actually deliver 3.8V through 80% of its mah use in a flight. That represents a BIG difference in power/oz. And if you gear even one of these new generation of 5S packs for a sport type of rotor speed (e.g. 1600 to 1700) you will find a 5000 mah pack will give you more then 8 minutes of good flying! |
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06-04-2010, 07:28 AM | #59 (permalink) |
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That depends on how hard you load them. For HV applications, they work better. My data logs showed 2.8 to 2.9V per cell on my Swift during my style of flying. I continued to use A123 cells in airplanes after I stopped using them in my helis. They still have safety advantages over lipos, but most of their other benefits (cost and charge rates) are gone.
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Chris Boultinghouse |
06-04-2010, 09:34 AM | #60 (permalink) |
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Thanks guys, Well I would love a heli this size I think its too big. I need bigger but price is issue and not sure how much cost to rebuild one of these helis
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RAW 580 ,lots of Planes Powered by IX14 AMA 36 yrs. |
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