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Old Jun 13, 2011, 10:45 PM
Team30 Micro EDF
NitroCharged's Avatar
Adelaide, Australia
Joined Apr 2004
11,194 Posts
Gazza, the tail is correct.
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Old Jun 13, 2011, 10:50 PM
CV-15 VB-16
giuseppi's Avatar
USA, TX, Friendswood
Joined Jul 2007
1,371 Posts
Quote:
Originally Posted by gazza2003au View Post
my all up weight is 126grams i will do some amp and watt testing shortly the CofG was correct at 59mm back
The advertised "flying" weight in the description is 100g. What does it weigh w/o the battery?

g
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Old Jun 13, 2011, 11:14 PM
Mike
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Joined Dec 2010
750 Posts
Quote:
Originally Posted by akwardflyer View Post
will these fly on the rhino 360 2s lipos? or do we not know yet?
They do. My bud's using those batts of mine. It's a bit of a squeeze in the F86. Too bad they are out of stock. I ordered the flightmax instead.

My package arrived yesterday. Strangely, the F86 kit was assembled (except for the control rods). Im not complaining as i so not enjoy assembling. The mig kit came unassembled.

Now I just need to fix my DX8 antenna. It won't bind to new receivers after the wife accidentally had an accident with it. One of those situations that you can't get mad at.
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Old Jun 13, 2011, 11:52 PM
ancora imparo
jj604's Avatar
Melbourne, Australia
Joined Jul 2005
6,269 Posts
Mine weighs 92g with the FlyDream Rx and Thunderpower 325mAh battery. Could shave a couple of grams off by removing the balance lead and plug which are a bit of a nuisance to cram in at this small size.

Some test results in a few minutes. I just put the whole thing on my Medusa test stand to get some "in plane" static measurements.

John

PS While gluing the wing back on I noticed mine has significant WASH IN on both tips. Looks cool but it must be an accident waiting to happen. Might be worth checking before you fly.
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Old Jun 14, 2011, 12:20 AM
Registered User
gazza2003au's Avatar
Sydney, Australia
Joined Jul 2003
4,473 Posts
its a ARF/PNF model god knows why mine wont fly i moved the ESC way back got the canopy on and it still wont fly ive had enough of it this is my second micro jet the first was the EPP F4 another dud i hope u guy can get your sabres flying im giving up on mine http://www.rcgroups.com/forums/showt...5#post18495136
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Old Jun 14, 2011, 12:37 AM
ancora imparo
jj604's Avatar
Melbourne, Australia
Joined Jul 2005
6,269 Posts
Static Thrust test

Here's the results of a test run on the Mig15 using a new ThunderPower 65C 325mAh 2S.

Full throttle throughout the test. Battery barely warm at the end.

You would get at least a 4 minute flight at full throttle. More in practice as the fan unloads and you would not be flying WOT all the time. I think 6 minute flights are easily possible.

This is about 13C load and these new ThunderPowers hold their voltage well.

At mid test (just over 2 minutes):
Voltage is 7.2V (3.6V/cell)
Current draw is 4.25A
Static thrust is 59g for a 92g aircraft.

I made up some 18g leads for this test so voltage drops will be almost the same as in the airborne setup.

I'm no expert on small EDF's but this looks like a reasonably thought out 30 Watt power train for a commercial ARF/RTF offering this size. Presumably Mega and Nitro will have it doing 200kmh soon.

John
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Old Jun 14, 2011, 12:48 AM
Not enough hours in the day
Slaanesh's Avatar
Melbourne
Joined Feb 2009
2,425 Posts
Quote:
Originally Posted by gazza2003au View Post
its a ARF/PNF model god knows why mine wont fly i moved the ESC way back got the canopy on and it still wont fly ive had enough of it this is my second micro jet the first was the EPP F4 another dud i hope u guy can get your sabres flying im giving up on mine http://www.rcgroups.com/forums/showt...5#post18495136
*Ahem*

I'll buy it from you

Quote:
Originally Posted by gazza2003au View Post
my all up weight is 126grams i will do some amp and watt testing shortly the CofG was correct at 59mm back
I thought these were supposed to be about 95g ready to fly?

I think this is the problem - you really want it to be as light as possible.
Weight is a big issue with little planes.

I would use 2.5g servos, 6g ESC, 4g RX and about 20g max of battery.
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Old Jun 14, 2011, 01:06 AM
WiggleWiggleWiggle
ozzi supercub's Avatar
South Australia
Joined Jan 2008
6,066 Posts
These little models can test your patience. If I didn't have Nitrocharged here to advise it's likely I'd be doing the same. It really is a specialised field these tiny little jets.
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Old Jun 14, 2011, 01:13 AM
Registered User
gazza2003au's Avatar
Sydney, Australia
Joined Jul 2003
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u all make a good point i did use 3.6g servos instead of 2.2g i did use a 30g battery instead of 20g the extra weight can add up but i just dont get it the CofG is spot on as per instructions yet it wont fly i say good luck to who ever ends up with it my loss is your gain and i hope it flies well i think im just going to give up on all small jets unless i get someone else to test fly them for me in the future LOL
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Old Jun 14, 2011, 01:23 AM
Registered User
boingk's Avatar
NSW, Australia
Joined Feb 2011
2,120 Posts
Quote:
Originally Posted by gazza2003au View Post
my all up weight is 126grams i will do some amp and watt testing shortly the CofG was correct at 59mm back
Sounds like the weight might be the problem as the fellows above have said. My bare airframe weighs 55g and components going in weigh 50g, for an AUW of 105g. Obviously thats without control horns and glue, but that shouldn't bring it up to more than 110g.

I'm using HK 'MiniMan' 4.3g servos, DSM2-compatible receiver (cheapo dual antenna one), HK SS 8/10A ESC and Turnigy NanoTech 370mAh 2s (26g!). The servos have their mounting tabs cut off but are otherwise unmodified. The ESC has had its heatsink and heatshrink taken off to help cut down on weight. The receiver is light anyway, but I'm most likely going to cut off the extra pins I'm not using.

One last thing, the figures above are without the included droptanks which I can only see adding weight and drag.

Cheers - boingk
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Old Jun 14, 2011, 01:25 AM
Registered User
gazza2003au's Avatar
Sydney, Australia
Joined Jul 2003
4,473 Posts
Quote:
Originally Posted by boingk View Post
Sounds like the weight might be the problem as the fellows above have said. My bare airframe weighs 55g and components going in weigh 50g, for an AUW of 105g. Obviously thats without control horns and glue, but that shouldn't bring it up to more than 110g.

I'm using HK 'MiniMan' 4.3g servos, DSM2-compatible receiver (cheapo dual antenna one), HK SS 8/10A ESC and Turnigy NanoTech 370mAh 2s (26g!). The servos have their mounting tabs cut off but are otherwise unmodified. The ESC has had its heatsink and heatshrink taken off to help cut down on weight. The receiver is light anyway, but I'm most likely going to cut off the extra pins I'm not using.

One last thing, the figures above are without the included droptanks which I can only see adding weight and drag.

Cheers - boingk
u will need that heat sink on the motor thats why NitroCharged glued it on
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Old Jun 14, 2011, 01:27 AM
Not enough hours in the day
Slaanesh's Avatar
Melbourne
Joined Feb 2009
2,425 Posts
Quote:
Originally Posted by jj604 View Post
Static thrust is 59g for a 92g aircraft.
To be honest, it's not as high as I thought it would be.

I would have thought a 35mm fan would have been pushing 70g+ even on 2S.
The GWS 30mm EDF can do ~55g on 2S!

I just bought Gazza's F-86. I'll use some lighter stuff on it and see how it goes.
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Old Jun 14, 2011, 01:31 AM
Registered User
boingk's Avatar
NSW, Australia
Joined Feb 2011
2,120 Posts
Quote:
Originally Posted by gazza2003au View Post
u will need that heat sink on the motor thats why NitroCharged glued it on
Ah righteo. Personally I reckon a 4.5A static draw for a 8A continuous ESC should be fine.

Meanwhile the static thrust from my little 35mm/2s seems to be pretty good. Anyone else tested on NanoTech 370's?

- boingk

EDIT: Damn you Slaanesh... beat me to it
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Old Jun 14, 2011, 02:39 AM
WiggleWiggleWiggle
ozzi supercub's Avatar
South Australia
Joined Jan 2008
6,066 Posts
Is that the shortest amount of time you've owned a model Gazza?
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Old Jun 14, 2011, 03:04 AM
Registered User
gazza2003au's Avatar
Sydney, Australia
Joined Jul 2003
4,473 Posts
Quote:
Originally Posted by ozzi supercub View Post
Is that the shortest amount of time you've owned a model Gazza?
i think it is LOL i guess i just woke up in a bad mood and it all went down hill from there i was getting frustrated building the model i should have known at that point by the time i stopped flying it i was ready to pull my hair out i also went to the field twice today to fly the thing and my neighbour drove down there to watch the second time lol
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