Search: Posts Made By: quorneng
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07-12-2021, 11:12 AM
Replies: 13
Views: 2,801
Posted By quorneng

The V2 is obviously a significant improvement. If...

The V2 is obviously a significant improvement. If speed is important then it would help if the servo wires were not 'free' directly in the airflow. Much better to tape them down. The airflow close to...
07-11-2021, 09:28 AM
Replies: 13
Views: 2,801
Posted By quorneng

That is a truly remarkable achievement but with...

That is a truly remarkable achievement but with all that 'stuff' just stuck on top of the wing its aerodynamics are hardly at the same level of sophistication as the electronics. ;)
Forum: Foamies
07-07-2021, 03:14 PM
Replies: 0
Views: 143
Posted By quorneng

RC conversion to a Cheetah chuck glider.

I did an RC conversion to a Lidl XL chuck glider which flew well enough but when I saw the similar sized Cheetah it looked a bit more like a true glider.
188467
The original wing was already in two...
07-07-2021, 02:53 AM
Replies: 1
Views: 214
Posted By quorneng

A micro, and sub 250g, DH Venom.

This was my first attempt at a small EDF. The fact it came out at less than 250 g (actually 202!) was not a specific aim.
Basically an all sheet skin structure but using 2mm Depron.
188458
At this...
Forum: Beginners
07-07-2021, 01:49 AM
Replies: 4
Views: 181
Posted By quorneng

The Prof Your Dumas Tiger Moth will not need a...

The Prof
Your Dumas Tiger Moth will not need a lot of 'modern' power. The original recommended motor and 5A speed controller would only give a maximum of 40W of power. Brushed motors with gearboxes...
Forum: Beginners
07-04-2021, 11:12 PM
Replies: 9
Views: 291
Posted By quorneng

I think you will find that the motor is meant to...

I think you will find that the motor is meant to be at that angle. It is called down thrust and side thrust. It is used in model planes to counter both the effect of the motor torque (side thrust)...
Forum: Beginners
06-29-2021, 11:44 PM
Replies: 9
Views: 291
Posted By quorneng

That all looks pretty neat. A 'lightweight'...

That all looks pretty neat.
A 'lightweight' filler is ok ((B&Q or similar) as long as it is just for 'filling'. It has no structural strength but sands well.
Decorating a plane is another art all...
06-11-2021, 08:58 AM
Replies: 25
Views: 1,959
Posted By quorneng

Without pictures showing what you are doing it is...

Without pictures showing what you are doing it is hard to make meaningful comments.
05-14-2021, 10:54 PM
Replies: 5
Views: 438
Posted By quorneng

hkeelljr From your description I am not quite...

hkeelljr
From your description I am not quite sure what the problem is using a single central servo. It was certainly how the original was set up. At the time it was common to do it this way...
04-20-2021, 12:58 AM
Replies: 2
Views: 800
Posted By quorneng

An impressive modification and flight but was...

An impressive modification and flight but was this a case of 'expectation' just a bit beyond practicality?
04-16-2021, 10:29 PM
Replies: 8
Views: 964
Posted By quorneng

I can't help with direct Spektrum assistance (I...

I can't help with direct Spektrum assistance (I only use Spektrum compatible receivers) but as an observation if you are not confident enough to fly without having full 'safe' available are you sure...
04-16-2021, 01:17 PM
Replies: 8
Views: 964
Posted By quorneng

jangodog If you are using 'safe' it is vital...

jangodog
If you are using 'safe' it is vital that the gyro is calibrated to tell it what 'plane level' actually is. This is the attitude the gyro will try to return the plane to when 'safe' is...
03-27-2021, 12:50 PM
Replies: 6
Views: 997
Posted By quorneng

Very nice. A tractor Vulcan does have some...

Very nice.
A tractor Vulcan does have some advantages particularly if undercarriage is used as it allows a scale 'high alpha' landing, just like the full size did!
Forum: Beginners
03-27-2021, 12:32 PM
Replies: 38
Views: 14,889
Posted By quorneng

Turner Actually it is a bit more complex than...

Turner
Actually it is a bit more complex than that.
Once a plane is yawing the airflow direction over each wing is altered such that the 'leading' wing has the equivalent of forward sweep which...
Forum: Beginners
03-24-2021, 08:32 PM
Replies: 3
Views: 990
Posted By quorneng

I do not use FLYSKY but like all modern RC gear...

I do not use FLYSKY but like all modern RC gear leave the antenna length strictly alone. It is tuned specifically to the very high frequency used. Change the length in any way and you will reduce the...
03-24-2021, 09:57 AM
Replies: 13
Views: 1,404
Posted By quorneng

Just like the full size did!

Just like the full size did!
03-19-2021, 12:35 PM
Replies: 19
Views: 2,792
Posted By quorneng

Flysfloats With the fan in effect running...

Flysfloats
With the fan in effect running backwards you were lucky it did not break. The blade shape is designed to take the considerable forces involved in one direction only. Full power in reverse...
03-16-2021, 10:12 AM
Replies: 19
Views: 2,792
Posted By quorneng

The Regal Eagle may or may not be easy enough to...

The Regal Eagle may or may not be easy enough to fly but with a 12s 120 mm EDF you have jumped right in pretty close to the ultimate in electric power. Whilst the principles remain the same...
03-15-2021, 06:14 PM
Replies: 19
Views: 2,792
Posted By quorneng

Flysfloats According to this...

Flysfloats
According to this (https://www.effluxrc.com/Jetfan-120-Pro-EDF-unit-JF-120-PRO-edf.htm) web site the 120 ECO fan can deliver16.5 lbs thrust on 12s which should be more than adequate, It...
03-15-2021, 01:49 PM
Replies: 19
Views: 2,792
Posted By quorneng

Flysfloats What 120 mm EDF did you install and...

Flysfloats
What 120 mm EDF did you install and what capacity battery are you using?
With that information it is possible to do a Google search to find out what the manufacturer thinks the EDF...
03-13-2021, 11:49 PM
Replies: 9
Views: 1,386
Posted By quorneng

jangodog If you love your Viper then do it and...

jangodog
If you love your Viper then do it and your pocket a favour by leaving it alone!
If you are after more power then trial and error is not the way to go with an EDF.
Only do a change if...
03-13-2021, 01:32 PM
Replies: 9
Views: 1,386
Posted By quorneng

jangodog Most ESC in most applications work...

jangodog
Most ESC in most applications work fine on the default factory setting. All mine have even on 35 mm to 70 mm EDFs.
Has your old ESC failed?
Fitting a bigger capacity ESC does not deliver...
03-12-2021, 10:14 PM
Replies: 5
Views: 4,600
Posted By quorneng

Given all the mechanical parts and cylinders are...

Given all the mechanical parts and cylinders are steel you can understand the weight but nevertheless a wonderful example of the machinists art. Just count up the number of ball bearings required!
03-06-2021, 05:21 PM
Replies: 13
Views: 1,404
Posted By quorneng

Just simply superb!

Just simply superb!
03-01-2021, 11:25 PM
Replies: 13
Views: 1,404
Posted By quorneng

That really is most impressive. Well Done. I...

That really is most impressive. Well Done.
I hope it flies as well as it looks.
02-26-2021, 11:11 PM
Replies: 35
Views: 2,344
Posted By quorneng

jangodog My own guess is that none of the...

jangodog
My own guess is that none of the changes you have made would be expected to stop it flying, although each would degrade performance a bit, but all together might be different.
I would...
02-24-2021, 08:59 PM
Replies: 35
Views: 2,344
Posted By quorneng

A higher C rating does not deliver more power...

A higher C rating does not deliver more power unless the amps being taken are causing a significant voltage drop in the battery..
According to your video the voltage was 22.5 V at the full power of...
02-24-2021, 02:46 PM
Replies: 35
Views: 2,344
Posted By quorneng

jangodog More power could indeed be an answer...

jangodog
More power could indeed be an answer but first you really need to be sure if it is simply the battery that is loosing performance. If it is the battery adding a more powerful motor will...
02-24-2021, 12:54 PM
Replies: 35
Views: 2,344
Posted By quorneng

I must agree with Solentlife. For a specific...

I must agree with Solentlife.
For a specific airframe the power to fly is directly proportional to its weight. Add 10% more weight and you need 10% more power. If the extra weight creates more drag...
02-15-2021, 05:56 PM
Replies: 9
Views: 1,439
Posted By quorneng

Mustangdude I note you stated that the battery...

Mustangdude
I note you stated that the battery took 1711 mAh to full from a figure of 27% capacity..
That charge does not represent 63% of 3500 which suggest either the battery had more in than 27%...
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