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Posted by old4570 | Yesterday @ 01:25 AM | 4,643 Views
A true 4ch Micro ... ( 1s ) with stability .

A) Protocol (?)

Yeah , no idea folks . I ran thru all the protocols available on the Jumper T12 Tx and no bind . This is a shame as I think a Hobby Grade Tx just might do wonders for such a small plane .

B) Transmitter

Not complete rubbish , the Tx does seem to offer better than the usual fare of control .

C) The Plane ( Boss )

Not bad , comes fully assembled except for the landing gear which needs to be plugged in ( easy ) . Only issue was that things ( landing gear ) was not very straight . Even the tail wheel was pointed somewhere other than straight . ( Not the end of the world ) But a little bit of straightening was needed as well as a little glue . I took the Cub out in the back yard less battery and gave it a chuck ! I was simply amazed by how well it glides . Without battery CG looks to be about 40% back from the LE . Speaking of batteries , I should have some to play with in my collection .

It's a little breezy right now , but hopefully the wind will ease off for the evening . ( I hope ) So might be able to get in a flight ?




Volantex Sport Cub 500mm 4ch ( Maiden Flight ) (5 min 8 sec)


Wow !
Flew right out of the box !
And I was actually flying @ minimum throttle ( As low as it would go )

A) It flies out of the box
B) After about 5 minutes battery was 3.92v
C) It will fly slow , really slow .
D) It can fly relatively quick as well
E) It is...Continue Reading
Posted by old4570 | Dec 12, 2019 @ 05:27 PM | 2,420 Views
Black Friday

Almost 20 items in the limbo called MAIL !
Where's my stuff !!!!

Purchased my Christmas ( Xmas to some ) presents to myself ( who better to chose something to buy ) ..
Yes , was not after shirts or socks or any other nick naks ! No it had to be RC related ...
Folks at Banggood had a recent sale and a certain 4ch Cub was on sale and I got it for the same $$ as a WL toys F959
One can only hope it gets here for Dec 24 ( Last day for some snail mail ) .

A BIG THANK YOU to anyone and everyone that used my Affiliate links to buy stuff , earning me some BG points .
When you buy a lot of stuff ( I cant help it ) , every point helps .

Hmmm , Black Friday !

Do I window shop or blow some dust off my wallet ? ( Wait ) Didn'y I just spend money ? I'm a bad boy !
I have a Bee 490 staring at me

Still Ho humming over it's stuffing ..
I just might have to do a F959 flight pack onto it ( Control board / motor / folding prop )
Also that 450x with the F949 control board , needs work - Roll rate is way soft . Control horns might need new holes ..
Posted by old4570 | Dec 07, 2019 @ 04:48 PM | 3,906 Views
Swallow 800 (7 min 37 sec)


Rolled out of bed about 5.45am and walked out the door about 6.05am ( Sunday Morning )

So much wind this year .. Sunday morning is the only low wind time in about a week .

Swallow 800 > Mistakes !

I used 4.3g servos , dont bother ! Just use 9g servos .. When you glue the wing ( foam bits ) it is already very close to achieving CG . So when you pile in your hardware , your shifting that CG forward ..
I used some screws on the wing tips to get CG ,

I mentioned in a earlier post that the foam is soft , and the wing is easy to warp .

Flying the Swallow 800 ( NX3 gyro is off )

Needed a lot of trim to counter warping ( mild warp ) , but still !
My CG is as close as I can get to recommended , where the motor mounts to the model .
Ailerons are soft , really soft . You want decent length servo arms ( like with a 9g servo ) for more throw .
Elevator is ok , but that soft wing needs Aileron authority . Especially at the low speeds I was flying at .
I really need more aileron , and maybe I have to pull out those small servos and do a 9g transplant .

This thing is draggy ! The 1306 was @ about 1/3 throttle most of the time and it flew slow .
I think properly set up , this wing would be seriously NOOB friendly .
Being so soft how ever , you probably dont want to crash it . But , it's also relatively cheap . Selling under $20 USD for the kit at the moment .
https://www.banggood.com/custlink/DDvG6eoW6q

If I built another ?

Definitely use some 9g servos .
Maybe a larger motor like a 1806 ( Maybe ) and a 5x5x3 prop ( Maybe )
Posted by old4570 | Dec 06, 2019 @ 10:06 PM | 3,831 Views
Making some progress !
FPV camera has been located , gyro is double sided taped in place .
Servos are in ( but not glued ) ,

Whats needed is the ESC and Rx to be soldered .. Then I can start fine tuning , some gluing and test glides .
Also need a patch lead for the FPV ( power )



Looks like this is going to happen !

As pictured - Weight is 101 grams ...
Posted by old4570 | Dec 06, 2019 @ 04:15 AM | 3,211 Views
Bush league to assemble , glue !
Foam is soft and can warp when gluing in the spars , put it down on a flat surface .

As pictured = Foam bits glued together / no hardware !

Weight is right on the nose of 60 grams .

So the plan still remains to make this FPV ..

Motor will be the 1306 ( This one )

240 + grams of thrust on a 5x3 is plenty overkill . ( 2s )

CG is slightly rearward as is at the moment .. I will wait for the glue to dry and then try locating the CG with some weights before I start bolting on hardware .
Posted by old4570 | Dec 05, 2019 @ 10:53 PM | 2,755 Views
Some stuff came this week ..
Eachine Tx06 FPV cam / tx
Nx3 Gyro flight stability ...

All should be relatively light ,
I might go with that 800mm Wing .. The Bee 590 looks like it will get crowded really quickly .

Swallow 800mm Wing ..
Pictured = glue drying ...
Wow this wing warps easy ( soft foam ) , hopefully those flashlights will help it dry straight .. ( I hope )
Posted by old4570 | Nov 30, 2019 @ 05:00 PM | 1,866 Views
I did both 2s and 3s with the little 1106 3800kv ..

2s Test

65mm ( 2.5 Pitch ) - 37grams of thrust @ 0.84A @ 23100 rpm for 7.4 watt

3025 - 75 grams of thrust @ 1.84A @ 19540 rpm for 13.9 watt

3330 - 96 grams of thrust @ 2.5A @ 17000 rpm for 21.6 watt

3830 - 105 grams of thrust @ 2.7A @ 16700 rpm for 23 watt

3s Test

65mm Prop - 84 grams of thrust @ 1.74A @ 32700 rpm for 21.6 watt

3025 - 144 grams of thrust @ 3.2A @ 26400 rpm for 39.9 watt

3330 - 168 grams of thrust @ 4.4A @ 22800 rpm for 55 watt

3830 - 188 grams of thrust @ 4.7A @ 21000 rpm for 55 watt


Lets compare those figures to the 1106 6000kv tested previously ..


65mm Prop 2s

3800kv - 37 grams @ 0.86A @ 23000 rpm for 7.4 watt
6000kv - 87 grams @ 3.2A @ 33000 rpm

65mm Prop 3s

3800kv - 84 grams @ 1.74A @ 32700 rpm for 21.6 watt
6000kv - 100+ grams but could not sustain RPM over 35000 and shut down

3025 Prop 2s

3800kv - 75 grams @ 1.84A @ 19650 rpm for 13.9 watt
6000kv - 136 grams @ 5A @ 25000 rpm

3025 Prop 3s

3800kv - 144 grams @ 3.2A @ 26400 rpm for 39.9 watt
6000kv - 225 grams @ 9A @ 33600 rpm for 108 watt

The 6000kv motor got seriously hot with the larger props on the 2s battery , so no real meaningful data to share .

Loos like that 3800kv motor wants more voltage ( 4s possibly ) .
Or perhaps I just got a low power sample ? ( Be nice to have a larger sample lot but $$$$ )
But those figures are some what comparable to the 1104...Continue Reading
Posted by old4570 | Nov 29, 2019 @ 05:47 PM | 2,788 Views
Black Friday Sale over at BG

I got up early again to go play with those FF Su27's , supposedly 2kmh wind from 6am to 9am

Nope ! More like 20kmh wind

Thats annoying I have to tell you ..

Video has me throwing the Su27's into the wind , just for the heck of it . That much wind with such small light models = Whats the point !
Anyways , also had the LDARC 450x wing with the 1104 low power motor ..
Full throttle pulls about 2.5A .. ( Most of the video = 450x flying in the wind )

King Kong LDARC 450x in some serious wind (8 min 53 sec)



Also will be testing two motors shortly :
1106 3800kv RacerStar and a very interesting 1306 2700kv EMAX

I will do a direct comparison for the 1106 3700kv and 6000kv motors ...

Still lacking props , come on Snail Mail , so many props on order and none delivered .
Speaking of props , that new 1306 will hopefully prove to be the prop tester motor ( ????????? )
Posted by old4570 | Nov 27, 2019 @ 04:15 PM | 2,251 Views
http://www.xtar.cc/product/XTAR-VC8-Charger-125.html



For review / test I have the Xtar VC8 charger . What we have is a multi battery ( 8 ) , multi charge rate , Nimh / Li-ion charger ( 1.5v / 4.2v ) . Depending on the charge bay used , you have 3000mAh / 2000mAh / 1000mAh / 500mAh and 250mAh charge rates to chose from . These charge rates should cover just about 99% of your charge requirements . The power source required is either 5v USB or 9v USB making this charger very mobile ( any USB source ) .

Charging 18650 :

I really like the way this charger rolls with Li-ion , good quality batteries come off the charger at 4.19v and batteries with higher internal resistance ( older batteries ) come off the charger at lower voltage as the charger does not appear to try and force 4.2v onto batteries of lower quality . I really appreciate modern chargers that are so much safer than the chargers from say 10 years ago .



Charging AA :

I really like the VC8 for it's 8 charge bays . Charging 8 AA at a time really makes charging batteries easy . ( Especially if you have a lot of AA ) Now a lot of chargers terminate AA charging at about 1.46v or maybe 1.48v . The VC8 takes my Nimh over 1.5v , I pulled one battery off the charger at 1.52v and it was still charging . At this time I don't know how high the VC8 might take the AA , but anything over 1.5v is probably a waste as NIMH just don't do what dry cells and Alkalines do voltage wise .



USB Power...Continue Reading
Posted by old4570 | Nov 25, 2019 @ 06:56 PM | 5,744 Views
I glued one of the Bee 490 wings together ( just the foam bits )
Really wanted to get some idea on weight ( 34 grams for the foam bits )
And what I was going to do with the wing ?

1s Brushed or 2s Brushed / 1s brushless or 2s brushless

F949 F959 or something else ?

Hmmm , to many choices !

First I need to do more 1s brushless testing ..

Planning things out ( The best laid plans and all that )

34 grams for a base weight ... ?

Motor choice - Do I go for something small and light ? 3 to 4 grams
And then expect thrust in the 40+ gram region ( limited testing so far )
Or go for a heavier motor 10 gram , and maybe get 90+ grams of thrust . ( 1s )

Oh dear , if I go for Uber light , then I will have ? thrust .
But if I go higher , I may have better than 1:1 thrust to weight .

Small motor 4 grams ? Rx 3 grams , ESC 3 grams = 10 grams maybe ?
This would make about 44 grams ..
Then add ? servos and battery and hardware .. Possibly 60 something grams flying weight with 40 something grams of thrust .

The other way , with a 10 gram motor .. It would be only 6 grams more weight for the motor , but a heavier battery needed for CG possibly ..
So maybe 70 something grams with 90+ grams of thrust ..

Interesting .. No?

All up I have 4 wings to put together ..
One wing will be FPV and I did hope to put a flight control board on it .. ( Flight control board ??? - no idea where it is - post ? )

Oh well ! things to mull over ...
Posted by old4570 | Nov 23, 2019 @ 05:49 PM | 5,578 Views
HobbyKing Micro Su 27 (9 min 18 sec)



Had to get up 5.30AM , walk out the door just before 6AM ..
To get to the footy field in time not to be harassed by the wind .. ( Sat Morning )

Sunday morning - Sleep in ! Sat was a long day ....

Xtar VC8 charger , a USB power supply came ( 5v ) ...
So I ran a bunch of batteries thru the charger .. ( 18650 )
Have some important data ..

Mail = Hardly anything came !
Snail mail looks to have gone fully snail rather than mail .
Seems like , in the last 3 months the mail has slowed down ..

Where's my stuff ?
Posted by old4570 | Nov 21, 2019 @ 04:22 PM | 2,585 Views



https://www.banggood.com/custlink/KKGK47WgLD > Product link @ Banggood.com

User manual


It took some time for the Astrolux FT03 to get into my hands . The order was placed May 6 and it arrived Feb 19 . I can only assume that it took some time for who ever makes the Astrolux FT03 to make some , or possibly they are very popular ? I did take the FT03 for a walk and to be honest it's not nearly the best walking light out there . But what it does do is throw ! It throws Nuts ! The FT03 is probably the most throwy flashlight I have ever encountered .

This flashlight would really need some serious looking at if you Spotlight , do search and rescue or any activity where you need to put a lot of light a long way out . The pictures show the FT03 lighting up a Tower over 400 meters away . Doing this in the city with all the associated glare from the city lights . Just one word comes to mind = Impressive .

The Astrolux FT03 comes with a lanyard and some spare 0 rings as well a battery tube / spacer to run 18650 . I am using a Xtar INR 21700 as it's the largest battery I have . The FT03 will actually take a 26650 , but so far I have had no issues with the 21700 . The springs hold the 21700 in place really well and there is no battery slap to speak of , even if you shake the light . The build quality is really nice , and everything screws together tight . The inbuilt USB charge port is handy if you are using the light a lot and have a handy USB power...Continue Reading
Posted by old4570 | Nov 19, 2019 @ 03:55 PM | 980 Views
This was a lot more Bushleague than I would have thought ..

1) The wing section was laminated top and bottom .
2) The power pack from the Biplane Glider was put in about the same place as the capacitor power pack
3) The Su27 was then assembled as per usual
4) The CG looks to be more or less spot on , glides the same as the stock Su27

Just need some decent weather for a test flight ..
Posted by old4570 | Nov 18, 2019 @ 08:13 PM | 1,557 Views
Wow !
Can you imagine my surprise , when a Flashlight ( Astrolux FT03 ) was delivered this morning .
Order date was May 6 , it's Nov 19 today ..
I guess Banggood put in a order with the manufacturer and it took this long for them to get around to making some . ( I guess )
The light was sent for product review , and ..... It was a little embarrassing that it kind of vanished ...
If anyone from Banggood reads this ? , came this morning .

That glider is here , Biplane glider that flies like a rabid butterfly . ( The CG is way back )
Anyhow .... Why would you wan't one ? The power pack ... You want it for the power pack !
I will do a video ASAP , just so you can see / hear what I am talking about ..

UPDATE Pulled the power pack / pictures added !

FF biplane - Available from Ebay (0 min 35 sec)

Posted by old4570 | Nov 17, 2019 @ 09:56 PM | 3,007 Views
FF SU-27 project ...

1) Iron the Su-27 back into shape ( yes , it came a little bent )
2) Disassemble the SU-27 ( Remove the power pack )
3) Clone the Su-27 in 3mm Depron
4) Swap in the power pack from the Lipo Biplane glider ( which is a dog of the leash )
5) Cover in laminating film for strength + weight ..

So , as is ... The SU-27 is too light and under powered to deal with any kind of breeze at all !
If the breeze ruffles the hair on your head , it's too windy . If you can feel a breeze on your face ? , it's too windy .
Take the SU-27 indoors or go home .

So what to do ?
Maybe add weight and power ?



Yes , that FF lipo Biplane glider has a fantastically over powered - power pack !
The SU-27 is here , and simply awaits it's new power source ( Not here yet )
Yes , I have a FF biplane , but I am leaving that alone for now . So I must wait for the one ordered ..

The clone Su-27 ....
Hmmmm , can it possibly be made RC ?
It would be smaller than the HobbyKing one I have ..


Posted by old4570 | Nov 17, 2019 @ 04:40 PM | 2,969 Views
Wow ! Still windy as all out doors .. 2019 is about the windiest I ever recall . I hope this is not a trend that will be repeated next year , cos I did a lot more flying in 2018 .

Wing kit , yes the Bee 490mm double wing kit has arrived , and looks nice . Everything in the box came out at 100 grams even ( 2 wings ) .

Also got a DSM 4 ch Rx I have been hankering for ..

Also the folks at Xtar sent me their VC8 charger to review / test .. Just waiting on some USB power supplies so I can do a proper test .. The ones I have now dont come close to supplying the needed power for a proper test . But so far I am finding the charger very useful and capable .

My spending has come to a close for the year I think ( just about ) as this time of year the mail begins to slow down and anything purchased in Dec may not get here until next year . I am still owed a lot of knickknacks by the universe .

Plans = I want to build a FPV wing , and to that end ordered a compact FPV camera/tx unit . I ordered a flight control board some time ago , hope it gets here .. For FPV I would like some stability control .

Waiting for stuff just

Motor tests so far = Lets compare !

0905 - 10,000kv
1103 - 7800kv
1104 - 4000kv
1105 - 5000kv
1106 - 6000kv

65mm Prop ( 2.5inch pitch ) 2s

0905 - 108g thust - 51W - 6.7A - 36,000 rpm
1103 - 106g thrust - 42.7W - 5.37A - 35,500 rpm

Cut down 3025 ( 2725 ) 2s

1103 - 122g thrust - 55.3W - 6.58A - 29,...Continue Reading
Posted by old4570 | Nov 15, 2019 @ 08:33 AM | 2,879 Views
The motor only just bolts up to the test stand .

1s tests , I record thrust VIA the stand and RPM VIA the GT power tach .
2s tests are through the stand ...

I started with the smallest prop that would bolt to the motor , my 65mm prop .

1s - 65mm - 24,600 rpm for 42 grams of thrust
2s - 65mm - 36,000+ rpm for 108 grams of thrust ( motor is getting warm , but not so much as to burn ) 6.7A / 51W

The data sheet shows a 3020 prop

1s - 3020 - 19,000+ rpm for 46 grams of thrust
2s - 3020 - I was very gentle in adding power to see if the motor would cook ..
Around 2A the motor was starting to really warm up ...
I got brave and pushed the motor to 5A for only about two seconds and the motor got finger burning hot ...
No I didn't kill the motor , it lives !
But obviously 3020 is just too much for this motor with 2s ... ( I had to try as it's on the data sheet )
I would run that little 65mm prop 2s , or maybe a smaller 3 blade .. ( dont have any right now ) ...

Wow , 108 grams of thrust for a small 0905 ... Even 1s was not horrible ..
Posted by old4570 | Nov 14, 2019 @ 06:34 AM | 2,650 Views





2s On the stand

6x3 - 130 grams thrust - 3A - 10,000 rpm - 26W
6045 - 129 grams thrust - 4.69A - 7,000 rpm - 36.3W
5030 3 blade - 128 grams thrust - 3A - 10,700 rpm - 24.8W
5030 2 blade - 131 grams thrust - 2.8A - 11,200 rpm - 23.2W
4540 2 blade - 117 grams thrust - 3A - 10,700 rpm - 24.4W

3s On the stand

4230 2 blade ( cut down 5030 )
186 grams of thrust - 4.3A - 15,400 rpm - 50W

I really thought the motor might wind out on the 3s ,,, 12 x 2300 = 27,600 ..... But No !
Apparently this sample is not that grunt'y ..
On 2s it seems rather fixated on performing @ around 130 grams of thrust ..
That 5030 @ 2.8A and 131 grams of thrust , yeah I could live with that .
It be a respectable amount of thrust for the power ..
Posted by old4570 | Nov 12, 2019 @ 11:12 PM | 2,086 Views





4000kv

4 x 4 = 16,000
8 x 4 = 32,000

Lets get to it ...
The only prop on the data sheet is a 5x3 ...

5x3 2 blade ...

2s = 246 grams of thrust - 15,000 rpm - 7.7A - 57 watt
1s = 78 grams of thrust - 9,000+ rpm -

6x3 2 blade

1s = 90 grams of thrust - 8,700 rpm

Sorry , no current / power for 1s ..
Posted by old4570 | Nov 12, 2019 @ 09:13 PM | 1,812 Views


Hmmmm , remember that cute little motor ?

Yeah , I cooked it and now it's damaged ...

0802 16,000kv

4 x 16,000 = 64,000 rpm
8 x 16,000 = 128,000 rpm

I expected this might happen ..

The smallest prop I had , was still too much ..

I had to run it 2s , well it's advertised as being 2s capable ..

But that 16,000kv is just ridiculous ..

So ...... 2s .... resulted in some 41 grams of thrust at 39,000 rpm and the current peaked around 5.6A ...
Now the motor only got warm , I did not run it long enough to cook .. ( So I thought )
But obviously the motor got damaged doing a full throttle run ( 2s )

So is it really 2s capable ?????
I guess that was like lighting up a few cigarettes , the motor went up in smoke ( actually there was no smoke ) ..

What a anticlimax that was ...

Next motor test will be a racerstar 1306 4000kv ..
Supposedly 1 to 2s ...

Hmmm , how will it run 1s ????