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e-Electric Conversions > 700E Flight Times???
 
 
egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		My 700e flight time

I have completely finished my 700e conversion and test flown several times to see how it handled and what the final numbers looked like. I did not run any data logs, but, I don't think I need it. I just went by temperature of motor, esc, and lipos. First of all here is my set up:

700 Nitro Kit
Helidirect conversion kit
Scorpion 4035/560kV motor
CC 110HV ESC
Hercules BEC
FAD 115T Mod 1 main gear
Scorpion 10T Mod 1 pinion
X2 6S Turnigy 5000mAh, 35C lipos
G5 Pro Wide Chord 710mm blades
RJX Flybarless head (modified)
Skookum FBL system
Total weight RTF was 11.4 Lbs.
HS: about 2050 RPM with no load. Under load: down to 1900 RPM.
I am not using the governor yet. I am afraid of using the faulty firmware and burn my expensive ESC.

At the beginning I was flying without the Skookum, but, since I still do a lot of FFF, I did not like the handling of it. It tends to pitch up a lot when in FFF and very unstable hovers when windy. That's why I decided to go with the Skookum. It took care of all the glitches and now I love it.
For each flight I did a series of maneuvers. I am not a hardcore 3D flyer, but, I can pull some maneuvers off. This was my test series: FFF, loops, consecutive flips, consecutive aileron rolls, inverted fight, and a set of tic-tocs. I also did a few punch offs and tried to fly it a little hard. My flight time was 7 minutes.

The verdict
Motor temp: 145 deg F.
ESC temp: 110 deg F.
Lipo temp: 90 deg. F.
Voltage leftover per cell: 3.78V

I can honestly say that I am very happy with this conversion. It has a lot of power and torque. It maneuvers very quickly and it is very efficient. I could probably get another 30sec to a minute more of flying and still have the lipos in a safe zone. But, I rather give it a larger buffer zone. At this point, I don’t miss nitro. Especially the cleaning part and the extra stuff you have to carry around.




10-26-2009 02:45 PM
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Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		How much collective and cyclic pitches are you running?
Also, if you measure your esc temp after you land, which with
a CC I don't know how else you would do it, you should probably figure
about twice that temp at peak during flight. And if the flight is hard it could be more.
10-26-2009 03:37 PM
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misskimo
Key Veteran
Location: Alaska 13 years before , mississippi for 31 y

My Posts This: Topic  Forum		well he has magic.

Team X-Era ,Team ThunderPower, Minicopter & Spartan Gyros
10-26-2009 03:46 PM
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egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		I am running +/-12 deg. on collective and +/-10 deg. on cyclic. I have my temp. gun with me, I land, stop the blades by hand, and measure. It takes me propably 15 sec. or less after I hit throttle hold until I get the measurements. Heat is not going to dissipate to half its intensity in 15 sec. So, I think my measurements are a good estimate of how the motor is running. Hoever, you are right about the motor and ESC running hotter up there, but, not twice as hot.
10-26-2009 04:19 PM
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Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		Yes, about twice at PEAK depending on how hard you push it. I run Jeti Spin controllers, which record flight data so I can check what
happened with the controllers during flight. I've been doing this for a couple of years now, and have compared many times. I can set the max temp. shut down on the programer so the ecs will never burn up.
The heat sinks are VERY efficient at removing heat quickly, but yes
peak temps are alot hotter than when you bring it in and test it.
10-26-2009 05:19 PM
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egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		Oh wow! So the temp. does double in flight! What do you think about my results then? Is that temp. for the motor and esc too high? Should I change something on my set up? I don't want to burn a motor nor an ESC. They are expensive. Thanks for the info.
10-26-2009 05:33 PM
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MrMel
rrProfessor
Location: Lidingo, Sweden (GMT+1)

My Posts This: Topic  Forum		With the ICE ESC/With loggers out there, Ive seen alot of logs lately with built in temp, but I never seen a 50% drop in temp at landning.

peaks of 10-20% higher in flight, yes, but 50% I really dont beleive.

Scorpion motors usually gets to 140-155F after flight, so thats normal.

My site: http://heli.dacsa.net
10-26-2009 05:49 PM
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colsy
Elite Veteran
Location: Cambridge, UK

My Posts This: Topic  Forum		No 'ICE' loggers running 12s.
But i'm intrigued by the results as well.

Col.

Only Quote From Experience.
10-26-2009 05:55 PM
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MrMel
rrProfessor
Location: Lidingo, Sweden (GMT+1)

My Posts This: Topic  Forum		No, ICE doesnt come in HV versions yet, but my point is, no esc Ive seen has peaked double temps..

My site: http://heli.dacsa.net
10-26-2009 06:04 PM
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egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		So I am safe with what I am running? Thanks for the info.
10-26-2009 06:07 PM
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Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		You are still in the safe zone. But when the ambient temp rises i.e.
summer time, so will the esc temp. I think part of the reason guys are burning up their esc's is because they pack it in somewhere where it can't get proper air flow or next to the motor with it's heat generation...I have seen this. The heat sinks work very well, but they need ambient air flowing around them to work like they should otherwise more heat stays in the controller and is not dissipated off quickly enough. And because the CC hv's do not have a way to tell what peak temps were during flight, it is esp important. The amount of current running through the esc is what generates the heat, so the harder you fly the more heat. I fly my stuff pretty hard, and I check recorded data nearly every flight on my Spin controllers, and these things are what I've experienced.
10-26-2009 07:47 PM
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MrMel
rrProfessor
Location: Lidingo, Sweden (GMT+1)

My Posts This: Topic  Forum		Even though CC doesnt have over temp protection per see, if you havent disabled the Current Limiting (just set it to insenstive) you do actually have over-temp protection.

As temp rises, so does the IR, so the current limiting acts as a secondary temp protection.

Source:
http://www.rcgroups.com/forums/show...217&postcount=3

My site: http://heli.dacsa.net
10-26-2009 07:55 PM
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Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		MrMel did you ever get a weight on your Logo 700? I talked to Ready Heli and they said there is no Logo 700 kit. Guys are just stretching the 600's, which makes for a very light 700 sized machine, but not strong enough for anything very extreme...he said according to Mikado. Is your's a stretched 600? Mikado is planning a 700 kit he said, but it will be heavier than a stretched 600...and stronger.
10-26-2009 07:57 PM
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MrMel
rrProfessor
Location: Lidingo, Sweden (GMT+1)

My Posts This: Topic  Forum		Yes we are stretching the 600, and yes it holds up to very hard flights, trust me
Only undersized items which is hard to replace is the one-way.
(Im running metal head & improved tail hub to sustain the load from the blades)

Mikado might come out with a "real" 700, who knows.

Gonna measure the weight as soon as kids are asleep.

My site: http://heli.dacsa.net
10-26-2009 08:12 PM
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MrMel
rrProfessor
Location: Lidingo, Sweden (GMT+1)

My Posts This: Topic  Forum		My Logo 700

Empty without batteries: 2970 grams
With 2 x 6s1p 5000 Hyperion G3 VX: 4650 grams.

Thats with my config right now (where as I run a little extra weight here and there, actually to weight it down a little on purpose), my friend get's a RTF weight of about 4350 grams on his.

My site: http://heli.dacsa.net
10-26-2009 08:36 PM
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Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		Yes, that is super light. 10.25 pounds with VX's which are heavy.
I have in the past converted 50 size to 90 size or 30 to 50. It usually works ok. Many of the parts are lighter weight hence a lighter overall machine. But it seems like you get more frame flex from the lighter frames due to high power stresses etc. If the kit was designed as a 600, for that power class, the bigger motors would put excessive stress on everything. That's probably why Mikado is not recommending it. Also with the belt drive tail, is that causing much drag? The reason I ask is our first TR600E had a BDT and when we converted it to TT we got noticeably more time with the same batts.
And when we just spun it on the ground by hand it would go 3 or 4 times more revolutions with the TT before stopping. The tension on the belt was correct, we used to fly BD Raptors a lot, and that's when we learned to tension the belts.
10-26-2009 10:25 PM
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MrMel
rrProfessor
Location: Lidingo, Sweden (GMT+1)

My Posts This: Topic  Forum		E-aurora will be 10-10.6lb range, so its kind of new standard rather I think (team pilots running it at 10.2)

My site: http://heli.dacsa.net
10-26-2009 10:28 PM
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Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		Wow, that's light too. My latest 700E weighs 11.2 pounds with TP 45C 5000 12S. There is a little more I can do, but it will remain in the upper 10's finally...but I'm pretty happy with 6 mins flying pretty good 3D.
10-26-2009 10:54 PM
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helicraze
Elite Veteran
Location: Victoria - Australia

My Posts This: Topic  Forum		I also have a logo 700, 2 of them actually.

But yes the metal head and metal tail is really needed to be sure it will not self destruct.
My RTF weight with 12S 4500MAH 30C is 4.2KG RTF from memory, its pretty light.

I think about 4.5-4.8 would be best.
10-27-2009 04:06 AM
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misskimo
Key Veteran
Location: Alaska 13 years before , mississippi for 31 y

My Posts This: Topic  Forum		egiraldo911
dude! that 7 min flight time is just too hard to believe with those batteries , Headspeed, Weight,
I ran a 9 1/2 lb conversion with a 2000 HS and couldnt get that!
Man! I like to see a full video of your style and a flying time of 7 min on the video from lift off to auto hold

Team X-Era ,Team ThunderPower, Minicopter & Spartan Gyros
10-27-2009 04:32 AM
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