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Posted by old4570 | Jul 31, 2019 @ 09:34 PM | 2,509 Views
Yes , it is time for a dedicated Ezio 800 battery .
Some may know already that the Ezio 800 is battery challenged . ( Most batteries wont fit and those that do wont give you CG )
I ordered some batteries from HK ..
Took the plastic caps off ( Care needed as the tabs are fragile - hence the plastic cap )

Re solder the negative wire to the negative terminal on the second battery ..
Connect the negative and positive terminals on the two batteries so as to connect the batteries in series . ( 2s - 8.4v fully charged )

Glue , tape the cells together .. I needed weight so taped them .

Then I used hot glue to seal the terminals ( they be fragile ) , the hot glue should releave all stress and give the terminals strength .
Posted by old4570 | Jul 29, 2019 @ 11:59 PM | 2,560 Views
MG 800 maiden ( Sub 250 project ) (10 min 29 sec)



Flying weight = 240 grams
Battery = Nanotech 500mAh 2s
Motor prop = 5A maximum current
Most of the flight was 50% or less power ( I really did fly low power )
CG was around 70mm from LE - and that's to far back folks .
I have found a slightly heavier battery , brings flying weight to 246 grams .
CG shift ? ( ? ATM = battery is on the charger as I type this )

The wings are bent the wrong way . The roll axis is really sketchy , and the wings dip at will .
I spent so much time concentrating on keeping the wings level , the entire flight was a little sketchy as a result . ( CG did not help )

ESC Problems !
Yeah , too much servo action and the motor stops .. I am thinking this might be a UBEC issue , and when the servos pull too much current the ESC shuts the motor down . Not the fault of the MG 800 , but did not lend to a great flight experience .
I have other ESC's , just no bullet connectors for the ESC / Motor

CG -
Just tried it , and looks like the new battery pushes the CG about 5mm forward !
Yeah !!! Parking 5mm's .....
That's with the battery pushed as far forward in the nose as possible .
It might make a difference ..

Flight experience .
I can deal with a rearward CG , but the roll instability needs constant attention . It's hard to fly well when you are trying to keep the wings level . It really wants to roll left or right on it's own . If you watch the...Continue Reading
Posted by old4570 | Jul 27, 2019 @ 08:40 PM | 2,477 Views


RTF Weight = 207.3 grams / This is less landing gear - and less battery .
So we have some 42 grams for a battery . To be under 250 grams .
The motor / prop combo make for a 1:1 or a bee's tit better for power to weight ratio @ 251.4 grams ( test run with 900mAh 2s battery )

Hmmm , so far ! Looks like the CG might be too far back ( Just move the battery )
I did some test gluds in the back yard , and if I toss it too hard it tends to climb and stall ..
And a very gentle toss results in a nice glide ...
Maybe some down trim on the elevator ? Or relocate the battery ?

Thats what the CG games are for !

CG games !
Wing has Deflex - This be bad ju ju ...
With a flying weight of 240 grams the deflex makes the stability less than desirable .
The MG800 has a tendency to roll on it's own accord .. This makes life interesting .
I would go out on a limb here and say too interesting for a trainer .

Trainers need to fly hands off !
FPV ? I dont think so ...
It's early days .. But the MG 800 does not like to fly Sssslow ! It is capable of going slow , it just does no like it ( my sample )

Did anyone buy a Firstar 200 from HK when it was on sale ? ( Now there is a nice bird for those starting out or for anyone not wanting a challenge )

Anyhow , trimmed enough to maiden ....

Maiden
Posted by old4570 | Jul 26, 2019 @ 09:06 PM | 3,104 Views
Hehehehehe ! Oh dear !

Was it a waste of time trying to reduce weight in the wing ?
Starting weight was 78.5 grams ..
I got the wing down to 68.4 grams ..
Then after applying 10 thousands of an inch thick laminating film
73.6 grams
78.5 - 73.6 = 4.9 grams

All that work for 4.9 grams . I did have to try , just to see what was what .
I hardly think it was worth it .
With a projected Flying Weight: 420~500g
I can certainly do batter than that .
But to get under 250 grams ?


RTF

Maiden
Posted by old4570 | Jul 25, 2019 @ 09:31 AM | 3,915 Views
Wow ,

2 servos and controls hooked up ..
Motor installed ..
Still to go are the Rx and ESC

Not glued ... Weigh = 192.5 grams

That is too HEAVY !

Foam bits were 119 grams , test fit weighs 192.5 grams

So where the heck did 73.5 grams come from .. ??????

A smaller motor wont really work , so there is weight that cant be helped .
MG 800 needs to go on a diet !
Yeah ! Weight loss time ..

Weight loss

Maiden Flight
Posted by old4570 | Jul 25, 2019 @ 12:18 AM | 3,254 Views
Measure twice , cut once ...

1) I glued in the horizontal stabs .. Since the fuse is two pieces , and the stabs are two pieces .. ( Go with the flow )
2) I used some double sided tape to put in the elevator servo . Then fitted up the controls for that side of the fuse .
2.5) I cut a small slot for the servo lead in the bottom of the servo slot .. ( There is none )
3) I will use some steel wire to join the two elevator sides ( Not included in the kit )
4) For the wing , I will try one servo , can always change my mind !
5) I used a circular servo arm cut to purpose and will allow for two connections ..

Next I will need to solder a 10A ESC ..
I want to dummy fit the motor and ESC before gluing the fuse ..
So far , a little bit of thinking ! Then some test fitting !
I want the ESC to be a clean neat install , leaving lots of internal space .. ( Dont want cabling everywhere )



Part 3

Maiden Flight
Posted by old4570 | Jul 22, 2019 @ 11:49 PM | 3,097 Views
Is anything worth waiting 3 months for ? ( Maybe a liver or heart transplant )
At last , when I saw this kit ! I thought it might be interesting .

Oh ! It is interesting !
Seriously , there are so many ways to build / assemble this kit , you might be spoiled for choice .

Build it as a Rudder / Elevator / Aileron / Motor ... OR ... as a Elevator / Aileron / Motor ... OR ... Rudder / Elevator / Motor
Ailerons - How many servos to you want to use ? 2 or only one ?

That motor mount is really well thought out , but I wont be using it . I already have a motor in mind and it simply can't be adapted to that mount .
So I will be going in a different direction with the motor ( 7x4.5 prop @ around 5A full throttle )

Single Aileron servo ? Would have to be 9g , elevator servo - may as well be 9g .
ESC , Im thinking 10A or 12A ( depending on whats on hand ) , I did just get a 6A esc . ( But a little close )
That 6A esc is earmarked for another motor and project .. ( Possibly a depron Ezio clone )

Mounting the wing ...
I see 3 ways of doing it .. Some sort of a plate glued to the fuse to put screws thru ( wing hold down )
Glue the ply plate in place , use a rod , and use rubber bands ..
Or a rod at the back and front of the wing ( holes are there ) and just use rubber bands ( X pattern ) to hold the wing to fuse old style .

MG 800 ...

Horizontal stabs are two piece , hmmm .. Would need some sort of joiner .. ( Not doing dual control rods -...Continue Reading
Posted by old4570 | Jul 21, 2019 @ 10:05 PM | 2,584 Views
UMx Whipit's (two whips) Old Modified Whip VS 100% Stock Whip ( Short Version ) (1 min 6 sec)


Took the two Whips out , was windy .
Too windy to really compare , but here is the very short version .


Picture 1

FMS V-tail 800mm - Wanted one for a long time ! ( Not a house brick like a certain Super K )
I will do a pictorial on it when the wind backs off ( Northerly Gale Blowing ) , weather says next week end .

Picture 2 and 3

MG 800 from GB , only took about 2 months to get it .. ( 3 months after checking )
It is a very interesting kit - I will do a thing on it !

Bare Bones Kit weight = 119 Grams ( Just the foam bits )
Building to Federally Mandated 250 Gram Limit for unregistered , unlicensed pilots .
Gives us some 130 grams of stuffing .

Picture 4

100cm Hand Throw Glider -
I ordered two , and I took this one out of the box . Did I mention the Northerly Gale ?
Anyhow , I had to replace the steel ballast ball for a larger one to get CG .
And it looks to be a capable glider .
Ok , it is BENT !!!! , a little here , a little there . In fact , the only thing not bent a little was the vertical stab .. That was straight for some reason .
SO it looks like a bit of time with the hair dryer is required .
BUTT !!!! - It does glide , even bent .
How to RC it ? Thats the question .
Posted by old4570 | Jul 21, 2019 @ 04:31 AM | 3,108 Views
450x New motor ( 720 ) (1 min 8 sec)


Motor be a 720 brushed quad motor ( 7mm x 20mm )
Prop is overly small
CG is too far back
Flying weight is 47 grams
Its overly breezy ..


Swapped out the prop for a larger one when I came home and did some repairs .
I ordered a 8.5 x 20 brushed motor the other day ( The 720 will have to do for now )


The other wing ...............
2 wings in the kit ...
I ordered a WLtoys F959 flight board and a 959 motor ..
ALready have some 959 folding props .
Will try again ..
My F959 has about 1:1 power to weight ..
So in a 450x it might be more like 2:1
Should be better than the 0.5 to 1 I have now ( if that ) , might be more like 0.25 to 1

That 8520 will be interesting ! 53,000 rpm
Posted by old4570 | Jul 19, 2019 @ 05:17 AM | 2,567 Views


https://www.banggood.com/custlink/DmvvSdlqQw - Product Page




450x Maiden ( Small Wing ) (5 min 8 sec)



a) Originally it was my plan to go XK A800 flight board and motor ( Matched set ) . Unfortunately the control board did not want to function correctly when I tried to mix the two built in servos .
b) Control board is WLtoys F949 , and it does not support the XK A800 brushed motor . The wing lacks power very badly .
c) Turn too tight and the wing falls out of the sky ( That lack of power )
d) I did not expect the wing to fly at all , as there is no stabilisation . But it does fly .
e) Wing flies surprisingly well
f) Wing needs more power !!!!!! Will be re-motored ASAP . Currently could not pull the skin off a rice pudding .
g) The wing just has enough power to fly - JUST . This is my fault .


Update :

Have soldering iron ..
Swapped out the motor for a small quad motor ..
This means a lot less weight ...
So the battery needs re locating .
As pictured looks to be the go ..
Another week of bad weather ahead , so hopefully wont take a week to re fly ..
So this was how I was going to do the second one ...
Hmmm , so what to do with the other wing ?
Posted by old4570 | Jul 17, 2019 @ 11:02 PM | 3,052 Views
WLtoys959 + sq12 (2 min 38 sec)




A) Yes , I nearly flew the wings off the F959 .. Toward the end of the video it got very squirrel'y so I decided to land it . Honestly , I was probably one second away from the wings falling off . Yes they were glued in , but apparently I had gone a little overly weight saving in the assembly and the windy conditions broke the glue bond . And the wings backed out of the fuse ....
B) I did want that flight video ..
C) Calmer conditions needed , but with all the bad weather . There is only one good day on the weather forecast , and that day is scheduled as UMx whipit day . I better charge some batteries ....
Posted by old4570 | Jul 16, 2019 @ 12:19 AM | 2,810 Views


Oh dear !
I really was afraid of this ..
Can't do sweet SPUDS all with mixing ..
Probably because of the auto stability built into the board .
As soon as you mix , servos stop working properly ..

BUTT ....
WL Toys 949 control board to the rescue ..
The board cant handle the XK brushed motor , just way - way to big a motor .
And around 80% throttle , the board shuts the motor down .

Solutions -
1) Smaller prop
2) Limit the throttle to maybe 70% max

Anyhow , the plan was to do the second wing with a 949 board and a much smaller quad motor ..
I guess there is plenty of time to remove the XK motor , not like its locked in or anything ...
Such is life ..
Posted by old4570 | Jul 15, 2019 @ 11:11 PM | 2,682 Views
Motor Install ..

A drop of glue , and a zip tie holds the motor in place ..
The foam cover is held in place with clear tape , as I want easy access - in case there need to be changes in thrust angle .

Control Board ..

Some knife work to make a hole for the control board ( Looks like a neat install - I might B getting better at this )
Not glued in , not until after some glide tests ..

Hard Part ..

The controls , yes this will be the tricky bit due to the design of the wing ...

Prop ..

The kit comes with a bag full of props ( 10 ) , and I found a screw that fits - so - Easy Peasy / Lemon Squeezy .

Part 3 / Problems
Posted by old4570 | Jul 15, 2019 @ 08:25 PM | 2,828 Views
2PCS KINGKONG/LDARC TINY WING 450X 431mm Wingspan EPP FPV RC Airplane Flying Wing Delta-Wing KIT from Banggood ..

A) Pictures look real nice on BG
B) Video seen so far , also look real nice ..
C) In the flesh , the 450x is not nearly as flash as in the pictures , but it still looks like a nice model .
D) The plan

I have a XK A800 flight board and motor ..
Plan is to surgically alter the 450x and transplant the XK A800 internals
Well ? Thats the plan !

The weight of the foamy bits , less everything else is just about BANG on 25 grams ..
Is that good ?
Honestly the brushed motor weighs a lot = 16.9 grams
TH e flight board is a sprite 'ly = 9.5 grams

Will see what happens ..

Part 2 - Motor / control board
Posted by old4570 | Jul 13, 2019 @ 12:08 AM | 3,745 Views


https://www.banggood.com/custlink/vKG356pJ3R

If you have been looking for FF foam gliders for projects ?
Then it looks like Banggood.com has some that might be interesting to look at .
I just ordered 2 of the ones pictured . 1m Span for under $10USD

Hmmm , budget RC goodness !

Here is a link to all the Gliders that might be interesting


Posted by old4570 | Jul 10, 2019 @ 09:50 PM | 2,452 Views
Over the hump babe !
Half a 2019 is gone ....

Looks like my SQ12 cam did not drop its guts on me , rather the Micro SD card looks to be corrupted or possibly one of those hacked / clone cards ..
Yes , buy Micro SD cards from SE Asia and you might get a hacked / clone card ..
What is a hacked / clone card ?

Take a 1GB card !
What happens is the firmware is hacked to report ? Lets say that the card is 16GB .
Then they may print a Brand Name on it and sell it as a ( BRAND ) 16GB card .
When in actuality the card is a 1GB cheap nasty generic that cost next to nothing .
ANd the consumer gets ripped !
Lots and lots of profit in hacked / clone cards ...
Mine went right into the rubbish bin , and I took out a genuine card , and all looks to work fine ..
So take two soon on the cam'ed F959

Weather Report = Horrid Weather ! Just yesterday wind gusts to 100kmh .. Looks like a entire week of horrid weather
https://www.google.com.au/search?q=m...+weather&cad=h
No respite in sight ....

New Models :

There should ( Should ) be new models on the way ...
GB is doing a take two on a model I ordered a LONG ! time ago now ... ( LAG )
From Banggood I ordered some micro wings ...
Sold as a 2 pack ...
Plan be to use the XK A800 control board and motor for stuffing in the wing .
It's a project ..

Sonic Wing I always wanted BG to sell a $50 wing , here is one .

Also I ordered a FMS ...
I will keep this purchase under...Continue Reading
Posted by old4570 | Jul 07, 2019 @ 09:19 PM | 4,064 Views


Finally !

Got here this morning ..

What to complain about ?

Those wing mounting screws are still cheap nasty soft pot metal .
I stripped one trying to remove it after test fitting the screws ...

What I cant complain about ..

The holes for the wing mount screws have been enlarged
The carbon spars in the wing , with this one , are not lose in the middle under the plastic .
Horizontal stab was not broken off as with my first one
Vertical stab looks to be better installed
Mounting the wing was relatively painless ( OK = Those soft screws bite )

Overall , I would say this Stock Whip was better made than the first one I got .

And that's as far as I have got , .... The wind is up today ..

I did go out this morning and fly my WL F959 with a SQ12 camera on it ..
Was not a success , seems the weight of the camera made the F959 swing left and right a little ..
Also I may have moved the CG a little back as the F959 was climbing all the time .
The SQ12 crapped itself after 1 minute = Maybe because of the engine vibration ?
I may try again with a SQ11 ... Slightly more forward , For CG and to get away from the brushed motor .
Posted by old4570 | Jul 04, 2019 @ 12:00 AM | 3,518 Views
Ezio 800 Take 2 (8 min 53 sec)



Take 2 :

1) Larger , heavier battery !
2) New prop ( 4x3 ) We have thrust
3) Expo was 60% for Ailerons and 80% for Elevator / I then changed these to 50% for the Ailerons and 60% for the Elevator ( With the CG at flight )

So the first thing you can see in the video is increased stability , the CG is still rearward but the 80% Expo really tamed the Ezio ..
There is thrust now ...
Before with the factory prop , 50% throttle would not pull the skin off a rice pudding , and even 100% throttle was barely enough to climb .
Now with the 4x3 , I can cruise @ around 1/4 throttle , climb with 50% throttle and have power to spare .

That extra thrust really comes in handy .

I did glide the Ezio a fair bit , and the battery was still 69% when I got home ( That walk home might have helped in that regard ) .
Am I ready to give the Ezio a thumbs up ? = No !

Put in a new motor , make the nose longer , upgrade the controls , a better prop .
In other words , a bit of R & D !

My flying weight was 190 grams . The Ezio wants to go on a diet if you really want to glide it .
I would really like to see a motor prop combo that say does 5A or less at full throttle on 2s ..
Cruises at 1/4 throttle , and CG's with say a 350mAh 2s and comes in at under 150 grams .
( R & D )

The motor is making funny sounds , so not sure how long it will last ? ....

I would really like to see a $30 USD kit around 800mm about the same size as the Ezio - F959 - XK A800 that can be built to around 100 grams ..
That would be something !

Hmmmm , I have this motor , pulls 1.8A on 2s and .................................................. ....................
Posted by old4570 | Jul 02, 2019 @ 10:32 PM | 2,576 Views
Yes , more tuning !
I really am trying to get the whip to fly like a DLG glider .
These gliders porpoise way too much , and I am trying to tune it out , as well trying to stop the stall into a breeze .

A very gentle Northerly to start which quickly switched into a southerly .
I have been playing with the wing , increasing the angle of attack .
So far by shimming the front of the wing ..
Yeah , this did not get me so far as I would have liked .
So this time I shimmed the back of the wing ... And I like the results a lot .
There is no lift , no warm air , no sun , and then it began a gentle rain .. I guess that's all sink !

I ordered a New Whip from Hearns Hobbies - May 1 .. Where is my Stock Whip ?
2 Emails and no reply .. I guess that means a phone call !
Thanks H&H , way to Jerk customers around .

I really want to try out a Stock Whip after my Whip has been thru so many mods .

UMx Whipit - Trim flights (8 min 27 sec)

Posted by old4570 | Jun 27, 2019 @ 10:37 PM | 4,768 Views
I ordered some small folding props , and one of those was the WLtoys F959 prop .
Really wanted to see if the prop could be turned around from a pusher to a tractor .

Eeeeer - Yeah !
Now , I had to ever so slightly enlarge the hole so I could press fit the prop assembly to a 2mm motor shaft . ( looks to work )
Also the other day my replacement ( new ) tachometer arrived .
Anyways ...

Racestar BR1504 + WLtoys F959 prop assembly ..

3s - 14600 rpm - 2.8A
2s - 11600 rpm - 1.8A

And just to see what the brushed WLtoys F959 does

2s - 13500 rpm - 3.4A

Well , an almost completely useless experiment ( I guess ) , but the plan is to use this motor / prop combo for something .
Maybe a Depron model ? Sub 100 gram , Aileron / elevator bird ?


Hmmm , maybe motorise the R3 - ????????