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Search: Posts Made By: quorneng
Forum: Beginners 07-21-2014, 12:29 AM
Replies: 10
Views: 224
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: Beginners 07-15-2014, 03:46 PM
Replies: 10
Views: 224
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: Beginners 02-03-2014, 03:40 PM
Replies: 16
Views: 696
Posted By quorneng
DavidR8 You may have to accept that take offs...

DavidR8
You may have to accept that take offs are not really practical in your situation and as a result any undercarriage becomes a liability.
My field is at least grass but it is would be called...
Forum: Scratch and Kit Built Aircraft 12-07-2013, 11:11 AM
Replies: 26
Views: 1,327
Posted By quorneng
In the early days of monoplane fighters there was...

In the early days of monoplane fighters there was a concern that they would not make good gun platforms due to significant trim changes with speed so in a dog fight it would be difficult (read even...
Forum: Scratch and Kit Built Aircraft 11-30-2013, 03:54 PM
Replies: 15
Views: 593
Posted By quorneng
The real star is Chellie for having the courage...

The real star is Chellie for having the courage to organise it!
Many thanks.
Forum: Scratch and Kit Built Aircraft 10-29-2013, 11:59 AM
Replies: 170
Views: 6,138
Posted By quorneng
Chellie Looks excellent, well done. I hope...

Chellie
Looks excellent, well done.

I hope its flight characteristics are not too challenging with that long nose and short tail!
Forum: Scratch and Kit Built Aircraft 10-23-2013, 03:20 PM
Replies: 170
Views: 6,138
Posted By quorneng
A longer gear does seem to be required as you...

A longer gear does seem to be required as you will have to rotate to get sufficient AoA to lift off but I would add a stout wire skid as well to protect the prop (or always land dead stick like I do!...
Forum: Electric Ducted Fan Jets 10-02-2013, 06:05 PM
Replies: 41
Views: 1,431
Posted By quorneng
Chellie As an experiment I did fly this (a...

Chellie
As an experiment I did fly this (a brushless with a 120mm PC cooling fan)
171233
With the cowl removed.
171234
It did use a little bit less power but to my mind it did not compensate...
Forum: Scratch and Kit Built Aircraft 09-12-2013, 03:41 PM
Replies: 170
Views: 6,138
Posted By quorneng
Chellie That's quite a bit of Depron bending!...

Chellie
That's quite a bit of Depron bending! It looks very nice

I have laminated 2 or more layers of thin 2mm Depron to get a sharp curve using PVA as the glue. It has to held firmly in place...
Forum: Scratch and Kit Built Aircraft 09-08-2013, 11:56 PM
Replies: 170
Views: 6,138
Posted By quorneng
Very nice - just about the size of my Fairey...

Very nice - just about the size of my Fairey Delta 2.

Not quite sure of the "wider tips for RC use..." though. True scale is half the fun!

Now if I crash and destroy one of my existing EDFs I...
Forum: Scratch and Kit Built Aircraft 09-07-2013, 12:28 PM
Replies: 120
Views: 6,366
Posted By quorneng
I hate to stick my head above the parapet but...

I hate to stick my head above the parapet but this is a scratch build blog & contest.
Chellie has tried to make it as open as possible by allowing 'modified' kits but a line has to be drawn...
Forum: Beginners 06-20-2013, 11:08 PM
Replies: 25
Views: 1,500
Posted By quorneng
Panther The slightly raised internal resistance...

Panther
The slightly raised internal resistance on one cell is unlikely to effect the ability to accept full charge but as you suggest that cell (or parts of it) will get hotter causing further...
Forum: Foamies 04-19-2013, 11:39 AM
Replies: 12
Views: 1,480
Posted By quorneng
It is perfectly possible to fly big wings with a...

It is perfectly possible to fly big wings with a small tail
but it will probably be very tricky to control and keep in the air.
167963
This certainly is but it is very light so flies pretty...
Forum: Beginners 12-29-2012, 09:22 PM
Replies: 14
Views: 794
Posted By quorneng
Moving the linkage to another hole does not alter...

Moving the linkage to another hole does not alter the centre position of the control surface but by how much it is moved by the servo.

The centre position is adjusted by altering the effective...
Forum: ParkFlyers 12-26-2012, 12:12 PM
Replies: 12
Views: 903
Posted By quorneng
raffjones It is possible the arm was fitted...

raffjones
It is possible the arm was fitted incorrectly but my instinct tell me there is also the possibility that it was originally in the correct position and that at some stage it has been forced...
Forum: ParkFlyers 12-15-2012, 10:50 PM
Replies: 17
Views: 1,643
Posted By quorneng
Are you still flying with 2oz of lead in the...

Are you still flying with 2oz of lead in the nose?
If you are see if you can move the battery (or anything else) forward to get the same balance without the lead.
If it flies ok now think what it...
Forum: ParkFlyers 10-20-2012, 10:43 PM
Replies: 2
Views: 461
Posted By quorneng
Very well done Ian! Rolls and loops as well. ...

Very well done Ian!
Rolls and loops as well.

I think you would agree the brushless and LiPo puts the Wing Dragon in a different league, you can actually spend time gliding.

How much does yours...
Forum: ParkFlyers 08-17-2012, 02:42 PM
Replies: 9
Views: 1,269
Posted By quorneng
The 808 is very small and light so its effect...

The 808 is very small and light so its effect will really depend on the size and power of the plane it is mounted on.
There are even wing tip and tail view videos when they are mounted on bigger...
Forum: Beginners 07-14-2012, 10:24 PM
Replies: 29
Views: 2,107
Posted By quorneng
A 'small' 1000kv motor pulling 22A on a 3s with a...

A 'small' 1000kv motor pulling 22A on a 3s with a 7x6 prop?
Something is not quite right.
What motors are they?
My 1500kV 28mm diam outrunner (Emax 2812) pulls 15A on a 3s with a 7x6 e prop. The...
Forum: Beginners 07-14-2012, 03:47 PM
Replies: 29
Views: 2,107
Posted By quorneng
flyyy If you like to potter about - build...

flyyy
If you like to potter about - build light, very light.
This plane has a 10x3.8 'slow fly' prop (about the finest pitch you can get)
161333
60" span it weighs 23oz (652g) with a 3000mAh 3s....
Forum: Power Systems 05-08-2012, 11:06 PM
Replies: 9
Views: 1,484
Posted By quorneng
jb It will depend on the design of the stick...

jb
It will depend on the design of the stick centring mechanism but in principle removing the springs will also remove the self centring but it probably won't have the 'click' action of a...
Forum: Foamies 05-08-2012, 04:01 PM
Replies: 17
Views: 3,256
Posted By quorneng
I know it may be a bit contentious but to my mind...

I know it may be a bit contentious but to my mind it depends what you use the foam for.
Using it to create an aerodynamic shape on an conventional load bearing structure although quite reasonable is...
Forum: Aerial Photography 04-05-2012, 01:02 PM
Replies: 7
Views: 911
Posted By quorneng
Nice Jayhawkjake. You do need to be careful...

Nice Jayhawkjake.
You do need to be careful though. I appreciate that much of the time you are flying over a lake but 'general public' areas are close by.
Hit something or worse, somebody, and you...
Forum: Aerodynamics 01-20-2012, 06:44 PM
Replies: 6
Views: 1,434
Posted By quorneng
Flaps can also be brakes. Much over 45 degrees...

Flaps can also be brakes. Much over 45 degrees does not increase the lift much but increases the drag so moving a flap between say 45 and 85 degrees gives a variable air brake
The Spitfire had flaps...
Forum: Aerodynamics 05-23-2011, 10:43 AM
Replies: 17
Views: 2,968
Posted By quorneng
There are also different types of tab. A trim...

There are also different types of tab.
A trim tab is usually directly controlled by the pilot to set the neutral load joystick position. The Auster had a bit of aluminium sheet fixed to the rudder...
Forum: Aerial Photography 03-29-2011, 11:45 PM
Replies: 10
Views: 1,745
Posted By quorneng
It all depends on what you want and the lifting...

It all depends on what you want and the lifting capabilities of your plane.
I started with a FlyCamOne2. Fairly simple to use it shoots in 640x480 video but has a feeble built in battery.
Then I...
Forum: ParkFlyers 01-22-2011, 06:23 PM
Replies: 144
Views: 35,636
Posted By quorneng
You did not say how the flight went but does...

You did not say how the flight went but does "Rebuild the servo tray" mean it ended in a crash?
If so it must have stopped pretty quick. Did it pull the screws out of the body shell?
Also check...
Forum: Aerial Photography 12-03-2010, 06:23 PM
Replies: 35
Views: 3,924
Posted By quorneng
1cm at 400'! What are you trying to shoot? A...

1cm at 400'! What are you trying to shoot?
A major problem with aerial photography is knowing exactly what the camera is pointing at, particularly when it is moving around the sky and at least 400'...
Forum: ParkFlyers 11-29-2010, 09:14 AM
Replies: 3
Views: 765
Posted By quorneng
Simple answer - yes, but remeber you can break a...

Simple answer - yes, but remeber you can break a two blade as well!

A good guide is to go up 1" in diam but keep the same pitch however there is a bit of "suck it and see" to get the best prop.
Forum: ParkFlyers 11-24-2010, 05:27 PM
Replies: 9
Views: 1,609
Posted By quorneng
Jack Provided you add the extra wing area...

Jack
Provided you add the extra wing area without a proportional increase in weight it will fly slower but you might have to increase the tail sizes to maintain sufficient control.
Increasing the...
Showing results 1 to 30 of 35

 
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