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Archive for May, 2019
Posted by old4570 | May 30, 2019 @ 08:45 PM | 1,812 Views


Yes , been raining for almost a week now ( most rain we have had in a long time ) ..
Came this morning , one WL Toys F-959 ...
Easy peasy / lemon squeezy ... Just plug in the wings and charge the battery ... Ok !

I also had to trim the rudder and elevator .. Alignment was ?
Other than that :
Engine / prop produce right on about 1:1 power to weight .. Noisy motor but no bad vibrations .
Flying weight is right on about 111 grams .

Factory transmitter blows chunks ! Ever seen a Cow blow chunks , the factory Tx blows chunks like that ..
Ele / Rud are seriously jerky
Motor = First 1/3 of throttle gives you nothing , then suddenly the power comes on .. And motor speed seems to be in 3 stages ( Feels like )
And the Rud / Ele feels the same , like 3 stages of control ( Not smooth at all )

Since the model uses the old Flysky protocol , I bound it to by Taranis Q x7 equipped with a multi protocol module ..

Chalk and Cheese folks ... Night and day , garbage and strawberries .
The difference is simply astounding .. Everything on the Qx7 is smooth ( Motor / Rud / Ele ) .

The battery goes right up the nose of the model , and there is plenty of movement / placement to play with the CG .

I will not fly the F959 with the factory Tx , it just blows .
I already set it up in the X7 .

Bad Weather , rain and more rain predicted + Winds ...
??? When I will get a chance to fly , F959 - Firstar - Ezio ...

MG 800

I saw this...Continue Reading
Posted by old4570 | May 29, 2019 @ 08:36 AM | 1,643 Views


Features:
Plug and Fly - Just add your battery, radio system and fly
Ultra tough molded EPO foam airframe
Simple bolt together construction, no glue required
Stable flight performance
Magnetically secured battery hatch
Loops and rolls easily

Specs:
Wingspan: 758mm
Length: 536mm
Flying Weight: 200g
Motor: 2208A 4000Kv
ESC: 10A Brushless
Servos: 3 x 9g

Requires:
4+ channel Transmitter and Receiver
2S 7.4V 500~1000mAh Lipoly Battery w/ JST connector

Wow , chalk and cheese folks ( Chalk & Cheese )
And I am comparing the Firstar to the Ezio here ...
Yeah , the Firstar is the Cheese and the Ezio is the Chalk ...

Now HK say's you can assemble the Firstar in under 15 minutes , and if you were assembling your 2nd or 3rd , yeah ill pay that .My effort took about 30 minutes , as I was being very careful . I never looked at the instructions , the Firstar was just that easy . There just was nothing to challenge in the assembly process . That's like !!!! 100% Noob friendly .

Now , CG ....
For me a Zippy 850 2s will give me CG at the factory recommended spot , which seems more like a Control line CG spot .
Hmmm , a nonotech 460 gives me a better CG ( to my mind ) and a nanotech 370 gives me , maybe a more rearward CG .I will try both nanotech batteries ...

I measured the current draw @ full throttle and I got some 10.6 amp . Also the thrust seems to be very good and the Firstar might fly around the 30% throttle mark . ( Might ) ... Flying weight with the nanotech 370 is around 207.6 grams ..
All that's left is that flying thing !


Posted by old4570 | May 28, 2019 @ 01:17 AM | 1,916 Views
I guess HK does not really care .. ( I guess )

More problems !



I installed a 4ch Rx ( FS2A ) from Banggood . ( That part was fine ) .
You know , when people say you cant fit a battery in the Ezio , they really mean you cant fit a battery .

One of the batteries listed at HK ( the nano-tech 460 ) , is too large to fit the Ezio ..
I know because I have that battery ...
This leaves you with the smaller 300mAh and 350mAh batteries ...
And a lot of lead to get CG ..

When it comes to battery width , the max might be around 26mm wide ..
There are some batteries that will fit ..................... @ Banggood !
I found some 1s batteries that would have been perfect as 2s , and since they were being sold as a 4 pack ... I ordered a 4 pack . ( Like I need more batteries )

If you look at the pictures , you will see a battery held in place with a rubber band .. This is your other option !
Remove the hatch cover , and use a rubber band to hold the battery in place .. Pictured is a 450mAh of questionable quality .

Oh dear ! Yes , more BS to deal with !
The Push Rod Connectors are garbage ! I guess HK incuded them so you could throw something away .. They really are junk ...

Oh double dear ! Yes , more BS to deal with !
Run up the motor / prop and there is a horrible vibration !
Since I cant remove the prop / spinner assembly ( it's not going anywhere without being destroyed ) ..
I tried to balance the props = No way ! Not happening !...Continue Reading
Posted by old4570 | May 27, 2019 @ 12:26 AM | 2,293 Views


Unboxing & First Perspective


Unboxing :

Admittedly I was impressed when I opened the box , the Ezio seemed to be light , and looked really nice ( in the bag )
But once I started pulling the parts out of the bags , I started to feel that perhaps this was not the best Ezio to leave the HK warehouse .
The first thing that caught my eye was the sloppy covering @ the middle of the wing ( More Soon ) .
Also the hatch , the magnet apparently was not glued to the hatch cover at all .. Not that I can see .

Fitting it together :

Oh the problems , we are talking about a serious PITA ( Pain in the abacus )
1) Wing was broken - hence the sloppy looking covering
2) Hatch cover magnet not glued
3) Wing does not fit the fuse
4) Tail screw does not fit ( Elevator )
5) Ailerons - The screws that lock the control wires ? They dont go in all the way .. It's not the fault of the screws , simply the holes for the screws were either not drilled deep enough or not threaded deep enough . ( @ the control horns )

So what I paid $ for , was a problem looking for solutions .
1) I had to peel the covering , glue and glass the middle of the wing
2) Fit the wing to the fuse VIA some file work
3) Replace the tail screw ( Horizontal stabiliser / elevator )

Still to do
1) Hatch cover magnet - Not a priority
2) Aileron control rod locking screws - To be replaced and ground at the tips so they sit deeper ( PITA to do )

While I remember
...Continue Reading
Posted by old4570 | May 24, 2019 @ 09:17 AM | 2,652 Views
I ordered some F949 flight control boards some time ago .
Finally got around to trying one .

The board offers 4 channels , Thr - Rud - Ail - Ele
To use the 3rd servo , one simply plugs in a micro servo into the spare 3 pin slot . ( Sorry , which plug ? ) ( Measures 4.8mm x 2.5mm )
Anyways , 4ch capability .

Protocol = the old Flysky protocol used by the 9x and other transmitters .
Only fly in the ointment is the need to rebind the Tx to the flight board every time you want to use it .
This is probably because of the Factory Tx , which sends out a bind signal on start up .

Still , a very interesting board for RC projects that might need 4 channels . Especially Micro Models maybe around 500mm span .
The old V911 boards are just about gone , or simply premium priced . A F949 board just might be what the project ordered .

F949 control board (0 min 27 sec)

Posted by old4570 | May 21, 2019 @ 03:29 AM | 2,400 Views


I only had one 5x3x3 prop to try on the Mini Surfer 800
Today I got a package with some new props ..
So of course I had to see how much current they pulled .
Posted by old4570 | May 19, 2019 @ 12:28 AM | 2,290 Views
It occurred to me ...
That part of the problem lies with the way the pod is a attached to the boom .
3 screws holding it in place to a carbon plate ..
So a lot of force is applied to 3 very small places on launch ..

So before a problem arises , why not just epoxy the pod in place ?
Create a much larger area to distribute launch energy into !
Anyhow , that's what I have done with the Raven 990 ..
I fibreglass reinforced the pod , then glued it in ..
When the Epoxy dries , it should distribute load much more evenly over a much larger area .. ( + the fibreglass wont hurt too much - I hope )
That vertical fin is still weak as ! Next time it breaks , I will cut it out and rebuild it with more carbon reinforcing .
Posted by old4570 | May 18, 2019 @ 09:04 PM | 2,234 Views
https://www.rcgroups.com/forums/show...9#post41890549

I have issued a product alert : ( Well - for what ever it's worth )

I removed the pod from my Raven 990 and it has a stress fracture @ the same location as my Mini DLG pro ( where it broke )
Posted by old4570 | May 17, 2019 @ 10:42 PM | 1,725 Views
Well ,

Not that the Mini DLG pro was a particularly good DLG glider !
I mean , the UMx Whip could probably give it a run for it's money .

But ! I may as well try and repair it .

To that end !
1) I glued the pod back together with some thick Cyno
2) I scratched up the plastic surfaces
3) I put some light weight glass cloth inside and out using the thick cyno to glue it down .

I went with the thick cyno - Since it did such a good job gluing the two halves back together .
Hopefully I have a functional pod once more .

I am sure the carbon boom will be far more challenging , it's strength is seriously compromised .
Just trying to think of something .
Do I go to a Spring pull system , eliminating the music wire running on the outside of the boom ?
That way allowing me to do a WRAP around where the wing posts are , adding strength .


Posted by old4570 | May 17, 2019 @ 12:42 AM | 1,650 Views
Yes , the HobbyKing Mini DLG pro suddenly died ...

I went to do a launch and boom it hit the ground ...

What it looks like is the POD snapped in two , pulling the elevator servo forward , giving the DLG full down elevator and Slam Dunsky into the ground .

The wing and tail surfaces are ok .

The boom is severely cracked where the wing mounts ..

The pod , well it's snapped in two ..

WOW !!!
Since the Raven has pretty much the same pod , and same weak plastic , I guess I have to worry !
This is very disconcerting !

Hobby King ! Bite me !

I am currently waiting on some thin Cyno , so will not attempt any repairs just yet .

POD REPAIR !!!

I guess I will just have to scratch the Dickens out of it , and then fibreglass it inside and out ..

CARBON TAIL BOOM !

Will Cyno do ? or do I need to glass it as well around the wing mounts !

Yes , this is very very disconcerting .
Do I repair the Raven before it does a ground pounding landing ? ( I just might have to )
Posted by old4570 | May 16, 2019 @ 12:06 AM | 1,662 Views
HK Mini DLG Pro @ The Sink hole (4 min 50 sec)


Took my HK Mini DLG Pro to the Sink Hole ( local park )
Wow ...

I set this up a long time ago and for some reason the mixes had become corrupted .. ( Flaps not working correctly )
Also I think the CG is too far forward as my elevator is super soft .. ( So I removed some lead from the tip of the nose .
I think my CG was 60mm from the L/E

What I really dont like .. The canopy retention tabs ( They break )
So today I fixed the broken tab on both my HK DLG gliders ... Raven and Mini DLG Pro

1) I took some music wire and heated it red hot then put a hole where the tab used to be
2) Screw in a small screw that will function as a tab
3) Some cyno to hold the screw in place
4) Viola - fixed

HK Mini DLG Pro
Came home and deleted all the functions ( All of them in all the menu's )
Then did the functions all over again ..

Programmed in a Launch function ( Right Aileron deflection )
Also programmed in flaps ...
Everything seems to be working ...
Next time I will have to re-set everything ... ( Flight trim all over again )
Such is life .
Posted by old4570 | May 14, 2019 @ 11:39 PM | 1,320 Views
Rainbow 600 Light Wing ( 93.3 grams Flying Weight ) (1 min 47 sec)



The wind was a PITA , in calm conditions I should be able to fly the Light 600 even slower .
Over all , I found it to be impressive ..
Still using the 300mAh battery for the 112mm CG ..
For Noobs that CG might be too far back .
It was twitchy , especially into the wind . But very flyable !
Everyone should have a wing !
Posted by old4570 | May 13, 2019 @ 09:26 PM | 1,399 Views


Spirit 600mm Wing

A long time ago I made it my goal to build a sub 100 gram flying wing ..
For some reason it became a wall hanger . might have been those DLG gliders .

So today I decided to take it off the wall and go fly ...
Oh the problems !

The FrSky Rx just refused to bind to my transmitter ( yeah , also lost the bind for some reason )
So that ended up being a massive PITA that wasted over an hour of my morning .
Yes, after removing the Rx from the wing I managed to get a bind ..

Some re-assembly later ! and re-mixing functions .
I was ready to go play the CG game ( After all this time - I forgot where it was supposed to CG )
A 300mAh 2s battery seemed to be close .. ( See Pictures )

I went to my CG test area , and gave the wing a Chuck ! , it seemed to be ok ...
Elevator was given 50% Expo , Ailerons had nothing . Flying weight 93.3 grams
300mAh 2s battery ( Still over 8v when I got home )
CG is about 112mm from LE ( measure up against the fuse ) , maybe a little rearward ?

It flies ..
Most of the test flight was 50% throttle ..
There were times the breeze was strong enough to almost take my hat off my head , and at those times throttle had to be increased .
The Wing really got jittery in the strong breeze .. ( Is the CG too far back ? )
It flew well enough in a mild breeze , but I might try a slightly larger 350mAh 2s in the nose .

Over all I have to say the light wing project was a success !
Flying weight was 93.3 grams and the...Continue Reading
Posted by old4570 | May 09, 2019 @ 11:03 PM | 1,352 Views


It's WINDY / it's wet / and I got bored !
Waiting , and more waiting for stuff !
I have two gliders to finish and I need STUFF ! .. The 1.5 DLG needs a Rx , Bixler HLG needs servo extensions .

With the bad weather I got an itch to do something .
So I got on Google images and started looking for a good old fashioned chuck glider design to download .
Plan was to go MICRO ...
I wanted to use a BBQ skewer and some 3mm Depron .
The first plan I downloaded was the HAWK , but when printed out ( onto printer paper ) it was just too Micro .
I also downloaded the Lazy Bird plan and when printed out was a really good micro size . Span came out at 255mm !

Project cost = Less than $1
Project time = 1 to 2 hours depending on building exp

This was my first scratch built chucky in 40 years , so I made little effort to make it sweet . This was just quick and dirty to see what was what .

1) Print out the plan
2) Cut out the wing / fins to make templates
3) Draw around the templates on the Depron
4) Carefully cut out the wing etc from the Depron
5) I marked the centre of the wing , then cut partially through
6) I then lay'ed some tape over the other side of the wing and cracked the wing for the dihedral ..
7) I put a line of hot glue into the cut wing and then set it to the BBQ skewer , try and maintain some dihedral doing this
8) Glue the tail surfaces

Now we have to try and get CG ...
I used hot glue for this as well .. In regard to this , I should have left more BBQ Skewer in front of the wing so that less weight would be required for CG .
It glides , surprisingly well for such a small Chucky !

This was a very lose copy of the Lazy Bird , but just a fun little project to kill some time during some horrid weather !
Which continues outside as I type this ..
Posted by old4570 | May 05, 2019 @ 11:04 PM | 1,481 Views
Mini Surfer 800 Take 2 (6 min 16 sec)


https://www.banggood.com/custlink/mDDGrhd0ma > Sent For review by Banggood.com



Here we go > Take 2 !

Most of the flight is 50% to 60% Throttle
Battery is a Turnigy 1000mAh 2s 20 to 30C
Motor pulls about 6amp
When I got home the battery was about 3.99v per cell .

I went back to where I was before ..
So there was a slight tendency to climb under power ..
A 50% throttle it flew reasonably straight ( little climb )
At 60% throttle it was climbing ..
I did a 3 position switch to mix in down elevator , but it was a little too much and I ended up with a slight amount of down .

1) The Mini Surfer 800 when trimmed will fly smooth .
2) It can also fly hands off .. Set it up to fly straight and level and no corrections needed .
3) I did have 50% expo for the flight and I have since set it to 65% to smooth out the elevator a little more .
4) I guess I could do rates as well ?
5) Ailerons are perfect , no expo or rates needed
6) With no Rx issues , the Mini Surfer 800 launches really nice .
7) Cutting power to land there is a very distinct roll to the left , ( I will have to check that )
8) The mini 800 tracks well , turns well .
9) It flies 2s with no issues
10 ) Landings lack excitement
11) Flying weight with the Turnigy = 299.9 grams ( hmmm - on a diet ! , it might make 250grams flying weight )

Not sure the Mini Surfer 800 is a great 1st RC model , might be a...Continue Reading
Posted by old4570 | May 05, 2019 @ 07:35 PM | 1,282 Views
Woke up about 6.30am ...
It was dark , Cool and very Overcast outside .

By the time I had some models in the car it looked like it might rain !

So off I went really early to the flying site .

Mini Surfer 800 went up first ( Video Shortly ) .
This time around I did not try to fly and trim .
I had a 3 position switch set to give me a small amount of down elevator for flight ..

Without the 3 position switch there was just a small tendency @ 50% throttle to climb .
Activating the switch gave me a slight amount of down ...


Which to chose , the lesser of the two evils would be the tendency to climb .
With 50% expo on the elevator ( nothing on Ail ) the mini surfer 800 was very smooth , but it could be smoother .
I have set the rates to 65% on arriving home , and I have lowered the effect of the 3 position switch - down ele mix )

The other model I took along was the HK Mini DLG Pro ..
I have had this for a while and never flown it . ( Yes I have video )
Seems to glide nice .. Though has a tendency to roll into the launch wing . The harder you launch , the harder it rolls into the launch wing . ( Bad ju-ju )
+ The canopy will need some tape , I blew it off on a launch for some rearward CG .. ( Weight is in the nose of the canopy that comes off )