July 14th: the longest flight ever ? - Page 4

Ber60 · 08-04-2012, 08:40 AM

1h45 and a light drizzle

Drivinfast247 · 08-04-2012, 08:41 AM

Can't stop 'em!

burnoutboy · 08-04-2012, 08:45 AM

Go baby GO!

Ber60 · 08-04-2012, 09:00 AM

Official flighttime 1h46m22sec

comatosed · 08-04-2012, 09:02 AM

Awesome, nice one guys!

That is one strange looking heli, what blades are those?

sutty · 08-04-2012, 09:20 AM

Well done chaps. I await the details with interest.

Cheers

Sutty

Ber60 · 08-04-2012, 09:21 AM

It is a modified eco8 with wooden blades without covering

SEBBY · 08-04-2012, 09:24 AM

Or landing skids it seems

ragge1 · 08-04-2012, 09:57 AM

well done guys

jperkosk · 08-04-2012, 10:39 AM

Now waiting for official detailed photos and setup data

Tomstoy2 · 08-04-2012, 11:41 AM

WOW!!!! EXCELLENT!!!!!!

If it was to be broken, I knew you guys could do it! An exceptional effort. Long may the new record stand.
Proud of you guys!!!

sutty · 08-04-2012, 11:43 AM

Quote:

Originally Posted by jperkosk

Now waiting for official detailed photos and setup data

Yeah, me too, and hopefully to answer some questions about why you did what. For example, as Jerry mentioned, it is Flybarred, and yet I thought I had read that FBL was about 15% more energy efficient, but obviously you would have known that, considered it, and dismissed it. Perhaps it simply isn't true, which would be interesting in itself.

Why wood, and why no covering, etc. Instinctively I would have thought carbon would be better, smoother, more efficient, etc, but obviously again you will have considered all such things, you are the world record holders, and I want to know how any why.

Did you hear that, world record holders, how good does that sound.

Fantastic guys, simply awesome. Well done again.

Can't believe I know some world record holders.

Cheers

Sutty

redbird300 · 08-04-2012, 11:55 AM

Thank you all guys. I am extremely tired after hovering this (indeed) very sluggish heli for such a long time. And the champaign afterwards didn't help either, lol. So you'll forgive me for resting a bit now, I'll post more later on, like tomorrow or so.

A few details already:

The heli is in fact a stretched and modified kit, making for a 550 size. Yes, not larger, to keep the weight extremely low. It uses a plastic frame, and it is not a well known brand at all. It's a model that isn't been used commonly anymore since several years, a Ikarus ECO8. It uses a plastic frame, and was never intended for 3D flight, even not simple inverted flight. There's no negative pitch on the head in the stock setup. Total weight without batteries is slightly above 700 grams, both blades and everything else included ! A typical 550 without the lipo weighs around 2 kilograms, so we're almost at a third of that weight. In fact, with al our batteries, we're just over 2 kg. Assymmetrical, very light wooden blades, running 1000 to 1100 RPM. We didn't use the covering, too heavy, Erwin simply waxed them for protection and smoothhness. Carbon assymmetrical Spinblades are way too heavy, been there, done that. 25Ah of (very weak in terms of discharge rate) batteries in total. No high currents of course, and we're only needing 3S lipo packs to run the whole thing efficiently. These are Tx packs in fact ! Which makes for a smaller motor and controller. It's running in governor mode, to maintain the necessary headspeed to keep it in the air until the end, when the voltage starts to drop. No canopy, boom struts, skids, horizontal fin, and other unnecessary parts, lol. A very low tail reduction to save energy, barely enough to keep the tail stable in a hover or a slow piro. FBL doesn't add much advantage at these low speeds, there's very little drag as it is, drag is exponential to speed, we didn't even try that to be honest. And so on...

ragge1 · 08-04-2012, 12:37 PM

get yourself a glass of cognac and some of those nice Belgium beers and we'll be hearing from you tomorrow Raf

jperkosk · 08-04-2012, 06:24 PM

Your effort is officially recognized and as such we'll give you until tomorrow 6:00am to rest and come up with all technical data

Tomstoy2 · 08-04-2012, 08:16 PM

Hope you guys don't mind, but I posted your new WORLD RECORD over at a different forum I attend for mrc's in celebration of your amazing feat!

My apologies if you were trying to keep this on the down low!

redbird300 · 08-05-2012, 12:16 AM

Quote:

Originally Posted by Tomstoy2

Hope you guys don't mind, but I posted your new WORLD RECORD over at a different forum I attend for mrc's in celebration of your amazing feat!

My apologies if you were trying to keep this on the down low!

Found it, buddy.

http://www.helifreak.com/showthread.php?t=440996

Of course we don't mind, thx.

redbird300 · 08-05-2012, 12:34 AM

When the stopwatches and other timekeeping devices were stopped at this point...

... something weird happened:

A few moments later, everybody was covered in champaign .... by me, lol.
I couldn't help it.

Dumbthumb75 · 08-05-2012, 04:08 AM

Hovering for nearly two hours sounds incredibly boring...

But that is why you are a World Record Holder, and I'm not.

How come this thread's under "Belt CP"..?

x3mperformance · 08-05-2012, 04:30 AM

Congratulations.
Very interesting project and choise and layout of the bird.

Nicely done boyz.

08-04-2012, 08:40 AM	#61
Ber60 Registered Users My HF Map location Join Date: Jan 2008 Location: Belgium	1h45 and a light drizzle Attached Thumbnails __________________ Anything that flies

08-04-2012, 08:45 AM	#63
burnoutboy Registered Users Join Date: Jan 2012 Location: Baltimore, MD	Go baby GO! __________________ DSMX DX6i, MH mCX2, mSR, BL RKH mSR X, 3 X mCP X v.1 (one stocker, one destined for DBL, one destined for DBL mini130X), Lachmund mQX PM me for your soldering and mSR X BL build needs.

08-04-2012, 09:00 AM	#64
Ber60 Registered Users My HF Map location Join Date: Jan 2008 Location: Belgium	Official flighttime 1h46m22sec Attached Thumbnails __________________ Anything that flies

08-04-2012, 09:20 AM	#66
sutty Registered Users My HF Map location Join Date: Feb 2008 Location: Manchester, England	Well done chaps. I await the details with interest. Cheers Sutty __________________ Regards, Sutty BeltEXI, mCX, mSR, 4G3, FBL Trex250SE µB, FBL Trex450Pro µB, FBL Trex550e VX1, FBL Trex600ESP µB, Parkzone P51D

08-04-2012, 09:21 AM	#67
Ber60 Registered Users My HF Map location Join Date: Jan 2008 Location: Belgium	It is a modified eco8 with wooden blades without covering __________________ Anything that flies

08-04-2012, 08:41 AM	#62
Drivinfast247 Registered Users Join Date: Jun 2009 Location: Shelby Township, Michigan	Can't stop 'em!

08-04-2012, 09:02 AM	#65
comatosed Registered Users Join Date: Jan 2012 Location: UK	Awesome, nice one guys! That is one strange looking heli, what blades are those?

08-04-2012, 09:24 AM	#68
SEBBY Registered Users Join Date: May 2012 Location: NSW, Australia	Or landing skids it seems __________________ Trex 600cf - DFC, BeastX, KDE Kit Copter X 450Pro V3 - DFC, BeastX, Edge 350 MCPx - Hp06v2, Hp03 DX6i

08-04-2012, 09:57 AM	#69
ragge1 Registered Users Join Date: Aug 2009 Location: Norway , from Sweden	well done guys __________________ Trex 500 : Atom FBL head AR7200BX \| Atom 6HV : vbar 5,3 pro \| Goblin 700 : vbar 5,3 pro \| Goblin 500 : vbar 5,3 pro

08-04-2012, 10:39 AM	#70
jperkosk Registered Users My HF Map location Join Date: Dec 2009 Location: San Luis Potosí, México	Now waiting for official detailed photos and setup data __________________ Jerry Trex 700N Pro fbl, 600N Pro x 2, 450SE v1, 250 v2 fbl, Compass 6HV fbl, Blade 450x, 400, 300x, 130x, mCPx, 120SR, mQx, mSR, Rotor Concepts HPQ1, Walkera CB180Q, CB100, Novus FP, CP, Esky Hunter, Big Lama.

08-04-2012, 11:41 AM	#71
Tomstoy2 Registered Users Join Date: May 2010 Location: Erie,Colorado	WOW!!!! EXCELLENT!!!!!! If it was to be broken, I knew you guys could do it! An exceptional effort. Long may the new record stand. Proud of you guys!!! __________________ Avant Aurora 90n,Trex 600E Pro, HC500, HDX450sev4, Trex 250se, mCP-X & mSR, Mosquito, X/A Hexa/WKM/FPV, 450 Flame Wheel,Gaui 330X

08-04-2012, 11:55 AM	#73
redbird300 Registered Users Thread Starter My HF Map location Join Date: Mar 2009 Location: Belgium	Thank you all guys. I am extremely tired after hovering this (indeed) very sluggish heli for such a long time. And the champaign afterwards didn't help either, lol. So you'll forgive me for resting a bit now, I'll post more later on, like tomorrow or so. A few details already: The heli is in fact a stretched and modified kit, making for a 550 size. Yes, not larger, to keep the weight extremely low. It uses a plastic frame, and it is not a well known brand at all. It's a model that isn't been used commonly anymore since several years, a Ikarus ECO8. It uses a plastic frame, and was never intended for 3D flight, even not simple inverted flight. There's no negative pitch on the head in the stock setup. Total weight without batteries is slightly above 700 grams, both blades and everything else included ! A typical 550 without the lipo weighs around 2 kilograms, so we're almost at a third of that weight. In fact, with al our batteries, we're just over 2 kg. Assymmetrical, very light wooden blades, running 1000 to 1100 RPM. We didn't use the covering, too heavy, Erwin simply waxed them for protection and smoothhness. Carbon assymmetrical Spinblades are way too heavy, been there, done that. 25Ah of (very weak in terms of discharge rate) batteries in total. No high currents of course, and we're only needing 3S lipo packs to run the whole thing efficiently. These are Tx packs in fact ! Which makes for a smaller motor and controller. It's running in governor mode, to maintain the necessary headspeed to keep it in the air until the end, when the voltage starts to drop. No canopy, boom struts, skids, horizontal fin, and other unnecessary parts, lol. A very low tail reduction to save energy, barely enough to keep the tail stable in a hover or a slow piro. FBL doesn't add much advantage at these low speeds, there's very little drag as it is, drag is exponential to speed, we didn't even try that to be honest. And so on... __________________ TDR - Logo 600SE + 500SE + 400 - Furion 450 6S mini-V - 300X - 2 x mCPX - Schluter Bell Huey Cobra '74 - Aura 4 hotliner FAI world record longest electric RC heli flight: 1h 46m 22s

08-04-2012, 12:37 PM	#74
ragge1 Registered Users Join Date: Aug 2009 Location: Norway , from Sweden	get yourself a glass of cognac and some of those nice Belgium beers and we'll be hearing from you tomorrow Raf __________________ Trex 500 : Atom FBL head AR7200BX \| Atom 6HV : vbar 5,3 pro \| Goblin 700 : vbar 5,3 pro \| Goblin 500 : vbar 5,3 pro

08-04-2012, 06:24 PM	#75
jperkosk Registered Users My HF Map location Join Date: Dec 2009 Location: San Luis Potosí, México	Your effort is officially recognized and as such we'll give you until tomorrow 6:00am to rest and come up with all technical data __________________ Jerry Trex 700N Pro fbl, 600N Pro x 2, 450SE v1, 250 v2 fbl, Compass 6HV fbl, Blade 450x, 400, 300x, 130x, mCPx, 120SR, mQx, mSR, Rotor Concepts HPQ1, Walkera CB180Q, CB100, Novus FP, CP, Esky Hunter, Big Lama.

08-04-2012, 08:16 PM	#76
Tomstoy2 Registered Users Join Date: May 2010 Location: Erie,Colorado	Hope you guys don't mind, but I posted your new WORLD RECORD over at a different forum I attend for mrc's in celebration of your amazing feat! My apologies if you were trying to keep this on the down low! __________________ Avant Aurora 90n,Trex 600E Pro, HC500, HDX450sev4, Trex 250se, mCP-X & mSR, Mosquito, X/A Hexa/WKM/FPV, 450 Flame Wheel,Gaui 330X

08-05-2012, 12:34 AM	#78
redbird300 Registered Users Thread Starter My HF Map location Join Date: Mar 2009 Location: Belgium	When the stopwatches and other timekeeping devices were stopped at this point... ... something weird happened: A few moments later, everybody was covered in champaign .... by me, lol. I couldn't help it. Attached Thumbnails __________________ TDR - Logo 600SE + 500SE + 400 - Furion 450 6S mini-V - 300X - 2 x mCPX - Schluter Bell Huey Cobra '74 - Aura 4 hotliner FAI world record longest electric RC heli flight: 1h 46m 22s Last edited by redbird300; 08-12-2012 at 11:30 AM..

08-05-2012, 04:08 AM	#79
Dumbthumb75 Registered Users Join Date: Apr 2009 Location: Oslo, Norway	Congratulations!! Hovering for nearly two hours sounds incredibly boring... But that is why you are a World Record Holder, and I'm not. How come this thread's under "Belt CP"..? __________________ minicopter Diabolo, Henseleit TDR, MA Spectra-G, Raptor 50T Futaba 2.4 GHz

08-05-2012, 04:30 AM	#80
x3mperformance Registered Users Join Date: Jul 2012 Location: Denmark	Congratulations. Very interesting project and choise and layout of the bird. Nicely done boyz. __________________ Align T-Rex 450 Pro DFC BeastX, trainer.- Align T-Rex 600E Pro. SAB Goblin 700 - Maxed out Blade mCP X V.2. 4x Nine Eagles Solo Pro's. Spectrum DX8. x3mheli.dk Any landing where you only need to bend once, to pick up your bird, was a good one...

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