Search: Posts Made By: quorneng
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09-28-2022, 11:54 AM
Replies: 3
Views: 105
Posted By quorneng

John_C First you need to make sure your truck...

John_C
First you need to make sure your truck is mechanically at 100%. Any part that is not working properly is likely to absorb power that will reduce the run time of any battery.
It is the...
Forum: Beginners
09-28-2022, 10:33 AM
Replies: 5
Views: 151
Posted By quorneng

boodaghost Also be aware that LiPo c rating can...

boodaghost
Also be aware that LiPo c rating can be subject to "marketing" influences.
I have found LiPo with claimed 150c continuous rating. That would be a current giving a full discharge in just...
09-19-2022, 09:39 PM
Replies: 5,526
Views: 1,187,383
Posted By quorneng

plane You video has to be hosted on a public...

plane
You video has to be hosted on a public web site like YouTube so you can use the "link" icon in you post..
If you can't activate others peoples 'linked' videos then there is possibly some...
Forum: Beginners
08-30-2022, 07:58 PM
Replies: 1
Views: 1,121
Posted By quorneng

Airman90 With Safe selected the system will...

Airman90
With Safe selected the system will limit both the elevator and aileron travel. Further when you let go of the sticks the system will automatically return the plane to straight and level,...
Forum: Power Systems
08-17-2022, 06:25 PM
Replies: 4
Views: 707
Posted By quorneng

To be fair a slow fly prop "does what is says on...

To be fair a slow fly prop "does what is says on the tin". It more efficient at the low power levels likely with a slow flying plane.
"Very much horses for courses".
Forum: Power Systems
08-16-2022, 11:56 AM
Replies: 6
Views: 281
Posted By quorneng

jangodog You do not say what prop each motor is...

jangodog
You do not say what prop each motor is connected to. With no load, just running free, any of them should run without overheating the ESC. If one does then there is something wrong with it....
08-11-2022, 05:34 PM
Replies: 5
Views: 795
Posted By quorneng

Surely it all depends on the wing loading of the...

Surely it all depends on the wing loading of the EDF and by how much below full power is a launch possible to limit the effect of motor torque at launch speed.
As I fly from rough grass all my EDFs...
Forum: WWI Era
08-09-2022, 12:16 AM
Replies: 3
Views: 709
Posted By quorneng

Nice but both planes have far from scale length...

Nice but both planes have far from scale length noses. Such a pity.
188809
The Bentley & Clerget rotaries were seriously heavy. At 397 lbs making up about 40% of the empty airframe weight.
You...
Forum: Power Systems
08-01-2022, 03:25 PM
Replies: 3
Views: 840
Posted By quorneng

My guess is the ESC is overheating rather than...

My guess is the ESC is overheating rather than being overloaded. Is it getting sufficient airflow?
I note some of the 100a versions have a built in cooling fan. Even then it will still need a...
Forum: Beginners
07-06-2022, 01:23 PM
Replies: 29
Views: 1,689
Posted By quorneng

svanyonson Unfortunately there is no 'standard'...

svanyonson
Unfortunately there is no 'standard' for motor dimensions.
D2826 is its external length and diameter. For the A2212 the figures refer to the dimensions of the wound armature inside the...
Forum: Beginners
07-01-2022, 09:38 PM
Replies: 29
Views: 1,689
Posted By quorneng

Nice thrust test rig. :) As long as you are...

Nice thrust test rig. :)
As long as you are happy with the accuracy of the motor amps in static conditions with a 9x5 then a 15 A ESC should be fine. In flight the full power amps will reduce by...
Forum: Beginners
06-30-2022, 10:21 AM
Replies: 29
Views: 1,689
Posted By quorneng

svenyonson That 970 kV motor should be ideal...

svenyonson
That 970 kV motor should be ideal for a 9x5 on a 3s.
Note the motor wires exit from the front of that motor so you have to be careful how you run them back into the fuselage. There must...
Forum: Beginners
06-27-2022, 11:01 AM
Replies: 29
Views: 1,689
Posted By quorneng

Unfortunately by their design in runners tend to...

Unfortunately by their design in runners tend to have a higher kV for a given motor diameter. In addition as out runners are used by virtually all quads the market is much larger hence there is a...
Forum: Beginners
06-24-2022, 10:08 AM
Replies: 29
Views: 1,689
Posted By quorneng

svenyonson That looks to be a nice well made...

svenyonson
That looks to be a nice well made plane which should fly well. As a balsa/tissue construction glider I would be careful not to add too much weight. Do you know its likely total weight...
Forum: Beginners
06-22-2022, 07:03 PM
Replies: 29
Views: 1,689
Posted By quorneng

svenyonson I would be very concerned that if...

svenyonson
I would be very concerned that if the same motor was working effectively on a 5x3 then with a 9x5 the motor will be considerably over loaded.
As Ron points out a brushless motor will try...
Forum: Beginners
06-21-2022, 05:26 PM
Replies: 29
Views: 1,689
Posted By quorneng

svenyonson My first question is have you any...

svenyonson
My first question is have you any idea what the sailplane was intended to weigh with the original gear. It would be advisable to keep within that weight, particularly if it originally...
05-22-2022, 10:14 AM
Replies: 21
Views: 3,950
Posted By quorneng

Deleted Ooops! wrong thread

Deleted
Ooops! wrong thread
04-04-2022, 04:31 PM
Replies: 3
Views: 2,291
Posted By quorneng

Dom That is a real shame but all credit to you...

Dom
That is a real shame but all credit to you for showing the crash.
We have all done it but this still from the crash video shows just before the right wing dropped the Albatross in a rather nose...
Forum: Beginners
03-23-2022, 12:12 AM
Replies: 4
Views: 2,692
Posted By quorneng

The same post in two locations. Not very clever!

The same post in two locations. Not very clever!
03-18-2022, 11:25 AM
Replies: 82
Views: 13,914
Posted By quorneng

Skyersjet You are talking of a total plane...

Skyersjet
You are talking of a total plane weight in the order of 27 kg or 60 lbs. I note that such a weight means it would classify as a 'large model aircraft', at least in the UK and EU, that...
03-16-2022, 02:03 PM
Replies: 82
Views: 13,914
Posted By quorneng

SkyersJet If you scaled up my design to...

SkyersJet
If you scaled up my design to accommodate a 400 mm EDF it would be 4 times the size which would make it 5.6m tall with a wing span of 2.36 m.
It currently weighs 464g so scaling up by the...
03-14-2022, 06:49 PM
Replies: 8
Views: 3,343
Posted By quorneng

Sinbad A bit of Google research shows that the...

Sinbad
A bit of Google research shows that the FX707 as a glider has an all up weight ranging from 170g to 220g. You are proposing an all up of 382 g. That is quite an increase, 1.73 to be exact....
03-13-2022, 02:48 PM
Replies: 8
Views: 3,343
Posted By quorneng

Sinbad I would concur with Solentlife that...

Sinbad
I would concur with Solentlife that flaps on a 46" powered glider will have little or no benefit and only adds extra weight and complexity.
With the name and model of the glider we can use...
03-07-2022, 12:11 AM
Replies: 82
Views: 13,914
Posted By quorneng

Buck Rogers. I am not sure Von Braun would have...

Buck Rogers. I am not sure Von Braun would have been amused!
Although intended to increase the V-2 range Von Braun;s next proposal was a two stage version that could reach America which had in got...
03-05-2022, 03:56 PM
Replies: 82
Views: 13,914
Posted By quorneng

Don Just an update. The degree of control...

Don
Just an update.
The degree of control possible by the limited area of elevators in the EDF exhaust proved completely inadequate to resist the initial torque roll so simply allowing the roll...
02-22-2022, 06:26 PM
Replies: 2
Views: 787
Posted By quorneng

Kaija Like many such things the effect of where...

Kaija
Like many such things the effect of where the motor is mounted will depend primarily on haw far it is from the ideal position.
The object is to try to place the line of the propeller thrust...
02-22-2022, 12:18 AM
Replies: 21
Views: 7,954
Posted By quorneng

Well done! That really is a pretty good...

Well done!
That really is a pretty good performance from such a small EDF.
Forum: Beginners
02-16-2022, 06:48 PM
Replies: 4
Views: 2,593
Posted By quorneng

more questions Does the elevator oscillate (can...

more questions
Does the elevator oscillate (can you hear the servo moving) when the plane is absolutely stationary on the ground?
Does it continue to oscillate when you apply some elevator...
02-03-2022, 09:02 PM
Replies: 3
Views: 727
Posted By quorneng

On my maiden flights I let the plane climb a lot...

On my maiden flights I let the plane climb a lot higher than you did following the rule '3 mistakes high'. I hope not make a mistake but I like to know that if the plane does something unexpected I...
01-22-2022, 09:30 PM
Replies: 24
Views: 3,627
Posted By quorneng

The Black Arrows Hunter is still not yet flown...

The Black Arrows Hunter is still not yet flown but just for the record I did take the opportunity to take a picture of all five together.
188723
Note only the Black Arrows has it wings level as it...
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