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Search: Posts Made By: quorneng
Forum: Electric Ducted Fan Jets Yesterday, 11:50 AM
Replies: 14
Views: 384
Posted By quorneng
The saddle batteries between the ducts. 176723 ...

The saddle batteries between the ducts.
176723
The scale all moving tailplane has scale anhedral.
176721
Probably not necessary but the tailplane is fully mass balanced with 0.8g of lead in the...
Forum: Beginners 07-21-2014, 12:29 AM
Replies: 10
Views: 221
Posted By quorneng
Just to put in perspective by dropping the volts...

Just to put in perspective by dropping the volts by 1/4 will reduce the current by roughly the same amount but power is volts x amps so it will be 0.75x0.75 which is equals 0.56

In other words...
Forum: Indoor & Micro Electric Planes 07-15-2014, 04:17 PM
Replies: 20
Views: 357
Posted By quorneng
rtfm Your DX4 will do fine. How do you think we...

rtfm
Your DX4 will do fine. How do you think we all got on (and I still do) before the days of programmable TXs!

Depending of what you fly full size your experience should have some benefit as...
Forum: Beginners 07-15-2014, 03:46 PM
Replies: 10
Views: 221
Posted By quorneng
RayDF If you maintain the planes exact center...

RayDF
If you maintain the planes exact center of gravity I doubt you will notice that much difference.
It will have to fly a bit faster (not that much as lift is proportional to the square of the...
Forum: Scratch and Kit Built Aircraft 07-15-2014, 10:33 AM
Replies: 24
Views: 294
Posted By quorneng
Nigel At 10mm thick you can certainly get in a...

Nigel
At 10mm thick you can certainly get in a micro servo lying it on its side.

This is the underside of the wing on my Depron Fairey Delta 2 showing its aileron servo.
176620
The wing is 10mm...
Forum: Scratch and Kit Built Aircraft 07-15-2014, 12:33 AM
Replies: 24
Views: 294
Posted By quorneng
Nigel Why not have aileron servos buried in the...

Nigel
Why not have aileron servos buried in the wings? Then only their electric wires have to go round any corners.;)
Forum: Scratch and Kit Built Aircraft 07-14-2014, 03:29 PM
Replies: 24
Views: 294
Posted By quorneng
HO-229 The engines were not actually one above...

HO-229
The engines were not actually one above the other but staggered.
Lower forward, Upper aft.
176604
As far as working on the Lightning was concerned I understand everything was a nightmare!
Forum: Scratch and Kit Built Aircraft 07-14-2014, 02:03 PM
Replies: 24
Views: 294
Posted By quorneng
I did look seriously at an EDF EE Lightning. ...

I did look seriously at an EDF EE Lightning.
Keeping to scale the problem is indeed the fuselage, it is just too narrow and the intake area is tiny even with a single EDF. It would be difficult to...
Forum: Electric Ducted Fan Jets 07-13-2014, 02:29 PM
Replies: 14
Views: 384
Posted By quorneng
A start on the rest of the 'Harrier'. The wings...

A start on the rest of the 'Harrier'.
The wings on a Harrier are remarkably small. Scaled to the size of the fuselage they would only be 17" span.
As this is really only a test piece I decided to...
Forum: Electric Ducted Fan Jets 07-06-2014, 07:41 PM
Replies: 14
Views: 384
Posted By quorneng
The space between the ducts is just about big...

The space between the ducts is just about big enough for an 850mAh 3s so giving 1700Mah in total.
176407
The fan takes 20A at full power which is just 12C from the battery so this set up should...
Forum: Foamies 07-01-2014, 02:04 AM
Replies: 14
Views: 249
Posted By quorneng
Of course if the foam wing is hollow hiding a...

Of course if the foam wing is hollow hiding a servo wire is no problem! ;)
Forum: Beginners 06-27-2014, 10:02 PM
Replies: 48
Views: 633
Posted By quorneng
rajkojus Just remember not all foams are the...

rajkojus
Just remember not all foams are the same!
Some are light and brittle others are heavier and flexible. For home building most require some sort of reinforcement particularly for the wings....
Forum: Electric Ducted Fan Jets 06-27-2014, 04:26 PM
Replies: 14
Views: 384
Posted By quorneng
After some thought I decided a flat 'profile'...

After some thought I decided a flat 'profile' fuselage would be the simplest way to get the 4 nozzle duct into the air but to something like scale for the ducts it would only have a 17" wing span...
Forum: General Electric Discussions 06-23-2014, 12:25 AM
Replies: 16
Views: 401
Posted By quorneng
Karnsy You should not assume that just because...

Karnsy
You should not assume that just because you have a plane flying 'hands off' that the CofG is automatically 'right'.
Stable flight is perfectly possible with a rearward CofG (within limits)...
Forum: Scale E-Powered Aircraft 06-20-2014, 08:42 PM
Replies: 24
Views: 477
Posted By quorneng
I do wonder if as planes get older, like cars,...

I do wonder if as planes get older, like cars, their performance falls off more than people realise.
The Cessna 337 manual states: (taken from an NTSB accident report)
"Single-engine climb...
Forum: Scale E-Powered Aircraft 06-20-2014, 12:37 AM
Replies: 24
Views: 477
Posted By quorneng
iFLYrc_Vic My 53" 337 is actually an O-2 and is...

iFLYrc_Vic
My 53" 337 is actually an O-2 and is entirely scratch built.
176168
Being made largely from 3mm Depron it is very light (22oz all up) so no shortage of performance on its 240W combined...
Forum: Scale E-Powered Aircraft 06-18-2014, 12:09 PM
Replies: 24
Views: 477
Posted By quorneng
On my 53" Skymaster I used exactly the same...

On my 53" Skymaster I used exactly the same motors with identical diameter and pitch props front and rear. The rear has the LH prop.
The static current draw to each motor is very similar and...
Forum: Electric Ducted Fan Jets 06-17-2014, 01:31 AM
Replies: 14
Views: 384
Posted By quorneng
My ultimate goal is to create a scale Harrier...

My ultimate goal is to create a scale Harrier with true scale inlets and exhaust nozzles along the same lines as I did with my Fairey Delta 2 and XB70 but that is still some way off. A simple proof...
Forum: Electric Ducted Fan Jets 06-16-2014, 04:33 PM
Replies: 14
Views: 384
Posted By quorneng
The front pair of the four nozzle test duct. ...

The front pair of the four nozzle test duct.
The airflow is divided into 4 quadrants. Cascades in the L&R sections direct the flow outward to further cascades that direct it rearward.
176100
The...
Forum: Electric Ducted Fan Jets 06-14-2014, 10:54 AM
Replies: 14
Views: 384
Posted By quorneng
Cascade ducting

The Harrier/AV8 uses cascade 'vectoring' nozzles.
176063
Whilst I have no intention (at this stage!) to build a VTOL plane I wondered if it would be possible to use this principle to have multiple...
Forum: Beginners 06-04-2014, 09:38 PM
Replies: 32
Views: 8,839
Posted By quorneng
There is nothing stopping you binding two (or...

There is nothing stopping you binding two (or more) receivers to the same model number on a DX6i. It is just they will have the same characteristics - just like they do on a DX6 or any pre computer...
Forum: Scratch and Kit Built Aircraft 05-29-2014, 07:01 PM
Replies: 19
Views: 545
Posted By quorneng
Is flexing such a bad thing? By trying to...

Is flexing such a bad thing?
By trying to eliminate it you are loosing much of the potential strength in Depron.
The trick is to keep the aerodynamics uner control whilst allowing the flex.
This...
Forum: Scratch and Kit Built Aircraft 05-25-2014, 12:45 PM
Replies: 13
Views: 467
Posted By quorneng
Hi Chellie I shall be watching this with...

Hi Chellie
I shall be watching this with interest.
What will be its span?

Just for interest the booms on my 53" O-2 (337) are hollow built up in 3mm Depron and nothing else - no reinforcing at...
Forum: General Electric Discussions 05-23-2014, 03:04 PM
Replies: 137
Views: 3,165
Posted By quorneng
Everyone to their own opinion but Orange...

Everyone to their own opinion but Orange receivers have always worked fine for me.
Forum: Scratch and Kit Built Aircraft 05-21-2014, 06:30 PM
Replies: 49
Views: 1,346
Posted By quorneng
The 'active' canard certainly worked although...

The 'active' canard certainly worked although using the dual rate switch to limit the elevon elevator also reduced the pitch authority quite dramatically.
This suggests the canard is not that...
Forum: Scratch and Kit Built Aircraft 05-17-2014, 09:18 PM
Replies: 49
Views: 1,346
Posted By quorneng
The holes that had to be cut in the fuselage to...

The holes that had to be cut in the fuselage to instal the snake and remote canard servo.
175690
T%he canard elevator installed.
175691
All tested and the fuselage made good.
175692
The Orange...
Forum: Scratch and Kit Built Aircraft 05-12-2014, 03:14 PM
Replies: 49
Views: 1,346
Posted By quorneng
With the new servo to hand a start can be made...

With the new servo to hand a start can be made revising the control system.
First the canard.
The fixed part can remain but it requires a big hole to be cut into the fuselage to mount the...
Forum: Scratch and Kit Built Aircraft 04-29-2014, 10:14 AM
Replies: 85
Views: 2,725
Posted By quorneng
Nigel If you are indeed using switch mode ESCs...

Nigel
If you are indeed using switch mode ESCs then one red wire must be cut.

On a purely practical note using a mixer in this way could give problems. Some mixers only give a reduced travel on...
Forum: Scratch and Kit Built Aircraft 04-26-2014, 11:58 AM
Replies: 139
Views: 4,680
Posted By quorneng
Nigel I am not sure the TU144 was ever really...

Nigel
I am not sure the TU144 was ever really an 'equivalent' to Concorde.

In its initial form it used after burning turbofans. A good idea but it was unable to even reach its cruising speed with...
Forum: Scratch and Kit Built Aircraft 04-24-2014, 10:34 PM
Replies: 139
Views: 4,680
Posted By quorneng
Excellent weather today so had another go with...

Excellent weather today so had another go with the Concorde.
Edited again to cut out the bits where it was 'invisible' to the camera.
u5ASwcoGMUE
Most of the flight was done just below full power...
Showing results 1 to 30 of 500

 
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