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Showing results 1 to 30 of 500
Search took 0.04 seconds. Search: Posts Made By: quorneng
Forum: Scale E-Powered Aircraft Yesterday, 11:00 PM
Replies: 27
Views: 594
Posted By quorneng
Yesterday evening (9:15 pm!) as if my a miracle...

Yesterday evening (9:15 pm!) as if my a miracle the wind died right down.
So heart in mouth -it flies!
Too dark for a video so just a short flight nothing dramatic.
It does indeed easily go...
Forum: Scratch and Kit Built Aircraft 05-21-2013, 03:47 PM
Replies: 11
Views: 327
Posted By quorneng
Pushing up the pitch will certainly increase the...

Pushing up the pitch will certainly increase the current draw so you will have to watch you don't 'cook' the ESC or strain the battery.
Can you actually check the current?

The 'best'...
Forum: Scratch and Kit Built Aircraft 05-20-2013, 12:53 AM
Replies: 11
Views: 327
Posted By quorneng
Well done. Looks very nice. 12 minutes on...

Well done. Looks very nice.

12 minutes on 1000mAh means it is only drawing 5A so that's just about 40W giving 43W/lb at 14.85oz.
Should fly ok but I don't think it will have too much power to...
Forum: Scale E-Powered Aircraft 05-20-2013, 12:42 AM
Replies: 27
Views: 594
Posted By quorneng
Its ever so black. ::o 168920 Just the...

Its ever so black. ::o
168920
Just the control surfaces to connect up and the battery to be fixed in a position for a suitable CofG.
The rest of the painting can wait!
Forum: Scale E-Powered Aircraft 05-18-2013, 11:55 PM
Replies: 27
Views: 594
Posted By quorneng
The canopy complete and painted black 168893 ...

The canopy complete and painted black
168893
It is basically large light (1/2oz) Depron box.
168894
Its shape means it only need a small magnet on it leading edge to hold it down.
The next job...
Forum: Special Interest Aircraft 05-18-2013, 04:30 PM
Replies: 6
Views: 208
Posted By quorneng
pattern14 I think you will find stable hovering...

pattern14
I think you will find stable hovering (which is bad enough) is one thing but the transition to forward flight brings a whole new set of (and even worse!) issues.
Most interested to know...
Forum: Scale E-Powered Aircraft 05-16-2013, 06:13 PM
Replies: 27
Views: 594
Posted By quorneng
gramps2161 Yes cut down ex graphics card heat...

gramps2161
Yes cut down ex graphics card heat sinks. With a finger type heat sink it can be mounted flush with the skin and still dissipate a lot of heat without have to arrange internal cooling....
Forum: Scale E-Powered Aircraft 05-16-2013, 01:10 AM
Replies: 27
Views: 594
Posted By quorneng
With th ewing glued in place the rear decking and...

With th ewing glued in place the rear decking and air scoop are added.
168879
Still in 3mm Depron and fully operational passing air to the rear motor it is a bit of a 'labour of love!'
As the full...
Forum: General Electric Discussions 05-13-2013, 08:37 PM
Replies: 10
Views: 248
Posted By quorneng
You CAN do this at home -if you like!

In the usual IC versus Electric banter it was claimed that IC did not mind getting wet where as electric did.

I pointed out that a brushless motor was quite happy running under water as not only...
Forum: Scale E-Powered Aircraft 05-12-2013, 12:22 PM
Replies: 27
Views: 594
Posted By quorneng
With the basic fuselage skin complete the rear...

With the basic fuselage skin complete the rear ESC and motor go in. Not exactly short of room!
168837
168838
With the wing resting on the fuselage to give an idea of its size.
168839
It does not...
Forum: Aerodynamics 05-11-2013, 04:55 PM
Replies: 5
Views: 292
Posted By quorneng
familyyy123 Just remember that as things get...

familyyy123
Just remember that as things get bigger the strength of materials works against you.

Try making a paper dart 10 times the size with paper 10 times as thick and see how flexible and...
Forum: Scale E-Powered Aircraft 05-11-2013, 03:23 PM
Replies: 27
Views: 594
Posted By quorneng
fhhuber The entire cockpit canopy section (not...

fhhuber
The entire cockpit canopy section (not yet built) will be removable giving a battery compartment 8"x3"x2".
168824
The 1700mAh 3s is almost lost in it. ;)
Forum: Scale E-Powered Aircraft 05-10-2013, 09:10 PM
Replies: 27
Views: 594
Posted By quorneng
Before the front of the fuselage is completely...

Before the front of the fuselage is completely skinned the front ESC has to go in.
168810
The rather unusual motor mounting tube between the first two formers.
168811
The actual motor mounting...
Forum: Scale E-Powered Aircraft 05-09-2013, 03:33 PM
Replies: 27
Views: 594
Posted By quorneng
Like my Libelle and V-1 the fuselage is built as...

Like my Libelle and V-1 the fuselage is built as a half shell, planks over formers.
168776
The formers are white simply because being translucent the formers can be traced out holding the Depron...
Forum: Scale E-Powered Aircraft 05-07-2013, 07:56 PM
Replies: 27
Views: 594
Posted By quorneng
The tail booms took a bit of thought. So far...

The tail booms took a bit of thought.
So far all my tail boom planes have used glass fibre tube. It is actually a great deal strong then the Depron it is fixed to so is probably heavier than it need...
Forum: Scale E-Powered Aircraft 05-06-2013, 12:33 PM
Replies: 27
Views: 594
Posted By quorneng
First tile print out the 3 view. It will act as...

First tile print out the 3 view. It will act as the plan.
168738
Keeping the scale section NACA 2412.
168734
It reduces to NACA 2409 at the tip.
As the underside is cambered the lower skin has...
Forum: Scale E-Powered Aircraft 05-05-2013, 08:34 PM
Replies: 27
Views: 594
Posted By quorneng
53" Cessna O-2 in Depron

The O-2 was the military version of the Skymaster.
168729
And that is a pretty cool colour scheme!
From a scale point of view the O-2 used 2 bladed (variable pitch?) props rather than 3 on the...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-04-2013, 05:18 PM
Replies: 13
Views: 202
Posted By quorneng
You turned off the Tx before the Rx? Wrong! ...

You turned off the Tx before the Rx?
Wrong!
Always disconnect the Rx first, then switch off the TX.

With no Tx signal the Rx is free to pick up any stray emissions that might be around.
If it...
Forum: Hi-Performance and Sailplanes 04-27-2013, 04:32 PM
Replies: 6
Views: 655
Posted By quorneng
Beemerider Folding props are less efficient and...

Beemerider
Folding props are less efficient and heavier than an equivalent fixed one.
I have put both on the same plane and the difference is quite noticeable but as has been pointed out the...
Forum: Foamies 04-19-2013, 11:39 AM
Replies: 12
Views: 396
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 04-19-2013, 11:34 AM
Replies: 3
Views: 170
Posted By quorneng
vuoladodo First check all the connections very...

vuoladodo
First check all the connections very carefully. A poor soldered connection between the battery and ESC can cause a voltage drop sufficient to cause the ESC to shut down.
Most modern ESCs...
Forum: Indoor & Micro Electric Planes 04-13-2013, 09:22 PM
Replies: 5
Views: 435
Posted By quorneng
It does fly and considering it has brushed motors...

It does fly and considering it has brushed motors and tiny props it does so quite well.
Edited down from a 7 minute flight to include those bit where you could actually see it!...
Forum: Indoor & Micro Electric Planes 04-11-2013, 02:47 PM
Replies: 5
Views: 435
Posted By quorneng
The under cambered wing although stronger did not...

The under cambered wing although stronger did not show any significant improvement in efficiency so what to do with it?

I happen to have a pair of tiny brushed motors with 2.5" diam 'handed' props...
Forum: Seaplanes E-Powered 04-05-2013, 09:50 PM
Replies: 12
Views: 419
Posted By quorneng
Just as a point of history the early P38...

Just as a point of history the early P38 delivered to the RAF, apart from the right hand engines (to make them interchangeable with the RAF P40s) did not have turbo superchargers either.
In this...
Forum: Electric Ducted Fan Jets 03-30-2013, 09:44 PM
Replies: 35
Views: 1,482
Posted By quorneng
After the last nose damage I decided to improve...

After the last nose damage I decided to improve the ESC cooling by removing the shrink wrap and mounting the heat sink flush with the skin surface.
167518
A duct feeds air across the inner ESC...
Forum: Electric Ducted Fan Jets 03-20-2013, 01:26 PM
Replies: 35
Views: 1,482
Posted By quorneng
If you discount the fuselage it has a wing...

If you discount the fuselage it has a wing loading of 11oz/sqft but I suspect the substantial fuselage area adds quite a bit of lift at high angles of attack.

The reason I picked a JB2 colour...
Forum: Electric Ducted Fan Jets 03-20-2013, 02:21 AM
Replies: 35
Views: 1,482
Posted By quorneng
It flies, and surprisingly well. This is the...

It flies, and surprisingly well.
This is the video of its second flight. It had to be edited as it simply did not show on the video some of the time but does include a most unV-1like loop and a...
Forum: Electric Ducted Fan Jets 03-18-2013, 07:04 PM
Replies: 35
Views: 1,482
Posted By quorneng
The Depron battery box. 167222 The elevator...

The Depron battery box.
167222
The elevator servo goes underneath with the radio in its own box on the left and the ESC on the right.
167223
The ESC has an external finned heat sink.
167224
The...
Forum: Electric Ducted Fan Jets 03-16-2013, 07:04 PM
Replies: 35
Views: 1,482
Posted By quorneng
Before the nose is glued on all the wiring in the...

Before the nose is glued on all the wiring in the fuselage have to be secure.
167168
They are all long enough to go right to the nose if necessary.
The nose on thus completing the basic airframe....
Forum: Electric Ducted Fan Jets 03-15-2013, 02:43 PM
Replies: 35
Views: 1,482
Posted By quorneng
With the fin added the pulse jet can be fixed on....

With the fin added the pulse jet can be fixed on.
It starting to actually look like a V-1!
167146
The nose section is built in the same way as the others.
167147
The former at the join line is a...
Showing results 1 to 30 of 500
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