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Search: Posts Made By: quorneng
Forum: Scratch and Kit Built Aircraft Yesterday, 10:37 PM
Replies: 27
Views: 501
Posted By quorneng
With the nose taped in place it gives an idea of...

With the nose taped in place it gives an idea of it size.
175230
A quick check on the internal diminsions of my car confirmed it could be safely transported in one piece which meant the nose could...
Forum: Scratch and Kit Built Aircraft 04-15-2014, 10:45 PM
Replies: 27
Views: 501
Posted By quorneng
The ESC is installed close to the EDF. 175157 ...

The ESC is installed close to the EDF.
175157
The rx (an Orange 3 axis stabilised unit is mounted slightly further forward.
175158
With the nose temporarily taped in place the battery position...
Forum: Scratch and Kit Built Aircraft 04-15-2014, 12:27 AM
Replies: 27
Views: 501
Posted By quorneng
pmullen503 The lower surface of the plenum is...

pmullen503
The lower surface of the plenum is indeed supported by the divider which is 'hung' directly off the wing underside. The wing itself is plenty stiff enough to resist the plenum pressure. ...
Forum: Scratch and Kit Built Aircraft 04-14-2014, 03:05 PM
Replies: 27
Views: 501
Posted By quorneng
The top skin goes on making the wing a whole...

The top skin goes on making the wing a whole stiffer!
175035
Each wing half required nearly 2m of POR glue line. This took some time to apply so the skin had to be placed very accurately as there...
Forum: Scratch and Kit Built Aircraft 04-12-2014, 10:40 PM
Replies: 129
Views: 3,223
Posted By quorneng
More or less finished with light spray of acrylic...

More or less finished with light spray of acrylic white.
175019
Getting close to the maiden but will have to wait for the right weather.
Forum: Scratch and Kit Built Aircraft 04-07-2014, 10:57 PM
Replies: 129
Views: 3,223
Posted By quorneng
The battery hatch just about completes the...

The battery hatch just about completes the structural bits.
174529
The four tiny magnets hold it closed.
174530
Still quite a bit of filling of various small scratches and dents (the basic...
Forum: Scratch and Kit Built Aircraft 04-07-2014, 01:39 PM
Replies: 215
Views: 5,461
Posted By quorneng
Nigel 4Ss certainly seems to have given it an...

Nigel
4Ss certainly seems to have given it an appropriate performance.
Nice!
Forum: Scratch and Kit Built Aircraft 04-06-2014, 04:53 PM
Replies: 129
Views: 3,223
Posted By quorneng
Slowly creaping forward. The first time it has...

Slowly creaping forward.
The first time it has all been put together.
174506
Still got the battery hatch to make.
The nose is held in place by 3 Depron/balsa tongues and is intended to "knock...
Forum: Scratch and Kit Built Aircraft 04-04-2014, 02:42 PM
Replies: 129
Views: 3,223
Posted By quorneng
Nigel During testing I ran with 1,2,3 and 4...

Nigel
During testing I ran with 1,2,3 and 4 BECs connected. It made no difference at all. I subsequently found that it is quite in order to have multiple linear BECs connected (particularly if...
Forum: Scratch and Kit Built Aircraft 04-03-2014, 11:29 PM
Replies: 129
Views: 3,223
Posted By quorneng
As the fuselage is a true stressed skin structure...

As the fuselage is a true stressed skin structure the battery box itself has to be load carrying to make up for the loss of skin from the battery hatch.
The completed battery box.
174470
With the...
Forum: Scratch and Kit Built Aircraft 04-02-2014, 12:12 AM
Replies: 129
Views: 3,223
Posted By quorneng
With all four ESC installed and their wires run...

With all four ESC installed and their wires run through the wing to the fuselage a full power test.
clTb5tY64xI
Interesting the four ESCs arm in perfect unison!
The ESCs to radio connections use a...
Forum: Scratch and Kit Built Aircraft 03-28-2014, 08:30 PM
Replies: 27
Views: 501
Posted By quorneng
The wing is built in the same way as for my...

The wing is built in the same way as for my Concorde. 2mm Depron skins over closely spaced Depron shear webs with no other reinforcing.
The main part of the duct itself is just an open topped box in...
Forum: Scratch and Kit Built Aircraft 03-26-2014, 09:51 PM
Replies: 129
Views: 3,223
Posted By quorneng
As I was not entirely happy with the Red Brick...

As I was not entirely happy with the Red Brick ESCs I have decided to replace them with 20A Mystery ones which actually fit better into the space available.
Each ESC will have its own solid wire...
Forum: Scratch and Kit Built Aircraft 03-24-2014, 03:10 PM
Replies: 27
Views: 501
Posted By quorneng
As the XB70 fuselage has amuch smaller section...

As the XB70 fuselage has amuch smaller section than Concorde it would be built from thicker 3mm Depron. Apart from any stiffness benefit the extra skin thickness allows a bit more of a 'sanding...
Forum: Scratch and Kit Built Aircraft 03-23-2014, 07:10 PM
Replies: 52
Views: 1,625
Posted By quorneng
Well done! An interesting subject. A belly...

Well done!
An interesting subject.
A belly take off with a 'wing' is quite an achievement.
I have found that the nose down on launch from a high mounted prop is not solely due to aerodynamics but...
Forum: Scratch and Kit Built Aircraft 03-22-2014, 05:08 PM
Replies: 27
Views: 501
Posted By quorneng
Flywheel Indeed everything to exact scale...

Flywheel
Indeed everything to exact scale except the wing section. It will be the correct thickness ratio (3%!) but with a bi-convex section. The original's wing section was actually a flat hexagon...
Forum: Scratch and Kit Built Aircraft 03-22-2014, 01:25 PM
Replies: 27
Views: 501
Posted By quorneng
Nigel You do have to be careful of static...

Nigel
You do have to be careful of static thrust figures for EDF units 'stand alone' in free air, particularly with a generous bell mouth in place. It alone can add more than 10% to the thrust.
It...
Forum: Scratch and Kit Built Aircraft 03-21-2014, 06:56 PM
Replies: 27
Views: 501
Posted By quorneng
pmullen503 HobbyKing show the AEO 70mm...

pmullen503
HobbyKing show the AEO 70mm delivering 24oz thrust on a 3s (12.6V) but with a 3300 kV motor drawing 28A. On a 4s they claim 32oz drawing 38A
My 6 nozzle 24" long duct delivered 27oz...
Forum: Scratch and Kit Built Aircraft 03-21-2014, 04:24 PM
Replies: 27
Views: 501
Posted By quorneng
Although the airflow path may seem convoluted in...

Although the airflow path may seem convoluted in fact the duct expands fairly smoothly to several times the FSA thus slowing the flow down and reducing duct losses. The air is only speeded up again...
Forum: Scratch and Kit Built Aircraft 03-20-2014, 08:40 PM
Replies: 27
Views: 501
Posted By quorneng
Another Depron Delta but with 6 jets!

6 exhausts yes but only one fan.
Can you tell what it is yet?
A North American XB70.
174236
A truly impressive beast that could cruised for 2000 miles at close to Mach 3 with its first flight 40...
Forum: Scratch and Kit Built Aircraft 03-17-2014, 08:20 PM
Replies: 129
Views: 3,223
Posted By quorneng
The voltage spikes are due to the inductance of...

The voltage spikes are due to the inductance of the ESC to battery wires caused by the rapidly pulsed current from the ESC switching.

Just a bit further forward. The controls have been retested...
Forum: Scratch and Kit Built Aircraft 03-16-2014, 06:37 PM
Replies: 129
Views: 3,223
Posted By quorneng
To physically run the motor to ESC (and the ESC...

To physically run the motor to ESC (and the ESC to battery) wires through the wing has meant they are actually touching, indeed they are probably twisted together as well.

On the ESC to battery...
Forum: Scratch and Kit Built Aircraft 03-16-2014, 12:12 AM
Replies: 129
Views: 3,223
Posted By quorneng
The RH ESCs in place at the front of the duct. ...

The RH ESCs in place at the front of the duct.
174073
The main ESC heat sink is flush with the wing underside.
174074
The three magnet wires from each motor to its ESC are fed up inside the wing....
Forum: Scratch and Kit Built Aircraft 03-15-2014, 09:15 PM
Replies: 78
Views: 2,735
Posted By quorneng
Looks good. From a purely technical point of...

Looks good.
From a purely technical point of view those aileron link rods are a bit of a nightmare. Such a large 'z' bend in the middle means they have much more give in tension and compression than...
Forum: Beginners 03-13-2014, 02:28 PM
Replies: 22
Views: 609
Posted By quorneng
My issue with the video is that all those planes...

My issue with the video is that all those planes were perfectly in trim and even then the prop planes showed a bit of a torque roll. This is normal but was not mentioned.

Doing a maiden without my...
Forum: Scratch and Kit Built Aircraft 03-12-2014, 12:30 AM
Replies: 129
Views: 3,223
Posted By quorneng
Just a bit of movement. The ESCs have been...

Just a bit of movement.
The ESCs have been removed and the nacelle wall made good.
174015
Now I have just got to find a way to run the six motor wires forward through the wing to the ESCs that...
Forum: Scratch and Kit Built Aircraft 03-11-2014, 01:04 AM
Replies: 129
Views: 3,223
Posted By quorneng
Not much progress as I am waiting for some new...

Not much progress as I am waiting for some new solid copper 'magnet' wire so I can move the ESCs to the front of the ducts. This shifts quite a significant weight forward (so the battery can be moved...
Forum: Scale E-Powered Aircraft 03-07-2014, 05:37 PM
Replies: 40
Views: 660
Posted By quorneng
Mudbeast2 Have flown a tail dragger before? ...

Mudbeast2
Have flown a tail dragger before?
Is this by any chance your first RC plane?
If this is all new to you then a warbird Corsair is far from an ideal plane to learn on and I fear there is...
Forum: ParkFlyers 03-06-2014, 09:07 PM
Replies: 5
Views: 299
Posted By quorneng
The elevator control is no problem. The only...

The elevator control is no problem.
The only video I have at the moment is an 'on board' with a Key Fob cam.
8FOe3OYYkw0
The camera mounting vibrated a bit but it does give an idea of its...
Forum: ParkFlyers 03-06-2014, 05:06 PM
Replies: 5
Views: 299
Posted By quorneng
Some old planes never die!

Way back in 2008 I bought a Wing Dragon 4 with a brushed motor and 9.6V NiMh.
Through a many iterations it is still flying - well at least the fuselage and tail boom are, everything else is...
Showing results 1 to 30 of 500

 
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