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Member postings for Devcon1

Here is a list of all the postings Devcon1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Wot 4 MK3 Classic
20/10/2018 22:09:21

Sorry I should have said.

I made a paper template with the holes cut out, this was laid onto the top and bottom surface with the respective holes marked out in pencil.

Using new scalpel blades, I buy them 200 at a time which is great value, I cut through the veneer following the pencil line eventually pushing the blade in vertically up to the blade holder all round the cut line.

The veneer is then easily pulled off exposing the foam. Using a sharp filleting knife I cut a chunk out of the foam about 1/4 inch inside the cut line then once the hole is exposed it's easy to trim a bit more then do the final finish with sanding blocks and curved sanding sticks to get the correct radius in the corners, I made these by gluing abrasive paper onto some cardboard Baco Foil tubes.

20/10/2018 20:43:15

Correct on the turbulators BEB although not retracting, I'll cut the T profile into small sections and glue the to the top surface STOL style.

I was thinking of slats Ron but will consider them as a retrofit possibly.

1 hole cut, 11 more to do. I think it's what the word laborious was created for but the instructions promise me a 4oz saving with it all behind the COG which is a bonus.




Edited By Devcon1 on 20/10/2018 20:44:02

Edited By Devcon1 on 20/10/2018 20:44:59

18/10/2018 23:36:45

Will have ailerons and nothing articulated with the wing.

I fear I may oversell and under deliver but it's all good fun,.

Thanks all for your interest and guesses.

18/10/2018 21:57:49

Not my best photography, the bar is not threaded but just 4mm alloy rod and, what looks like a rider nut is just one of the bearings pushed on.

I'll only use 8 of the bearings which is a bit of a giveaway.

The T bar will be used as an aerodynamic feature but all will be revealed in due course. The carbon rod will play two roles.

Started the wings, following the construction guide I've opted to take away some of the foam cores to save weight.



Thread: New EDF Mini Jets- Sabre & MiG15 RCM&E 2018 Special
17/10/2018 23:04:36

Posted by Piers Bowlan on 16/10/2018 19:03:50:

Excellent work Ken, you are a trail blazer. I wonder if any others are 'in-build' at present?

Looks FANtastic smile d. (and well done Jim yes)


The weight looks good, something to aim at.

I now have all the gear but no idea as I've never been near a ducted fan model before but hoping to learn.

Will post the progress sometime November.

Edited By Devcon1 on 17/10/2018 23:06:04

Thread: Wot 4 MK3 Classic
17/10/2018 23:00:49

Not radial drives but I do like the concept. The other bits have arrived, the fuselage is completely finished now so work on the wing to commence.


16/10/2018 22:31:29

Folding wings, now that would be fun on a WOT 4, maybe the next one.

Other items needed, 2mm carbon rod, 4mm alloy rod and some Plastruct T profiles.

Fuz nearly done.

Never liked the way those plastic horns had the external clamping plate so have recessed the plate and covered with film.




Happy with the way the rudders have come out.


16/10/2018 20:05:38

It's a very long time since I played with some of these but looking forward to it.


Bits starting to arrive for the wing project


14/10/2018 22:13:46

Thanks BEB, it's been a real fun build/tinkering project so far.

Motor and ESC now installed together with the fuselage radio.

I've modified the pin arrangement on the FrSky Sbus decoder to tidy up the installation, still can't fathom why they have 3 connections horizontal and 1 vertical but hey ho..




14/10/2018 13:16:23

Lipo Sensor installed.

I shortened the the balance lead extension and neatened the cable by positioning the layout and then warming with a a hot air gun.

To keep the install neat the balance lead socket is epoxied in place.

The sensor itself is mounted on a film covered backboard purely for visual effect.








Thread: Grumpy old git returning
13/10/2018 22:22:49
Hope you enjoy your return to the sport.Dont hesitate to ask for help.
Thread: Geoff's Wot4 Mk2 electrification
13/10/2018 22:18:09
I understand now.Thats a very neat way of doing it. Thanks....
13/10/2018 18:17:32

Hi Geoff,

Watching with interest, to remove film to a line I've tended to, as you say, use a soldering iron lightly drawn over your cut line.

A couple of questions, what servo are you going to use for elevator and I'd be really interested in seeing a picture of how the two wing halves are joined as I'm struggling to visualise the method.

How is the weight going ?



Thread: Wot 4 MK3 Classic
12/10/2018 22:41:42

Found a solution to make visible the LED display on the FrSky LiPo Sensor, I know I have the data via telemetry also but the placement will be in keeping with the final look.

Trim made from a hand cream lid, painted then finished with an acetate window.





Not quite happy with the crumpled edges so will seek a fix..

Thread: New EDF Mini Jets- Sabre & MiG15 RCM&E 2018 Special
12/10/2018 07:10:59

Liking the silver finish, looking forward to seeing a few more of these built.

Just waiting to clear my bench but eager to start. Thanks alan p

Thread: Wot 4 MK3 Classic
10/10/2018 20:54:06

All tail feathers will be hinged with Blendtherm tape so I tried a little mock up of the rudders.

A single peice up the centre of the vertical stabiliser.


Them attach the two rudders.


Fold over and a single strip on the outer hinge line for each side.


Seems to work OK and keeps the weight down and a clean look to the model.



Talking of weight, the concept of losing a little from every possible component has got the better of me.

Casting aside the metal elevator joiner I've replace it with thick walled alloy tubing, seems more than strong enough for the job and the figures give me some satisfaction.



2 at the back is 10 at the front.

10/10/2018 17:55:36

That's neat, I'm thinking of soldering on a dog leg or pins from an old servo connector to get connection no 4 to sit parallel/flat with the other 3 connectors. I wonder why they made that last connection stand up ?

Thread: New EDF Mini Jets- Sabre & MiG15 RCM&E 2018 Special
10/10/2018 12:46:48

alan p,

I've sketched out a layout that will enable a fully enclosed inlet duct right to the nose.

The battery will be hidden in the bottom tank/hand grip, aileron servos recessed in the wing, elevator servo/servo somewhere, receiver and ESC hidden in the canopy which will just have an internally sprayed silver finish.

To manage the C of G I'll bring the fan unit forward a bit.

I've worked out the slightly reduced intake surface area is within the calculation of the surface area of the fan unit. My understanding this is calculated by deducting , no pun intended, the surface area of the impellor cone from the internal ducting surface area.

A challenge but achievable I think.

Thread: Wot 4 MK3 Classic
09/10/2018 20:51:20

No photographical evidence of progress but.

Spent some time creating the basic model template on OpenTx Companion then setting up a FrSky Sbus decoder linked to an X6R.

What a neat little bit of kit it is, I'll have 4 wing servos to drive Ailerons and Flaps but what a joy it will be to only have one dangly wire to grapple with in the winter.

What I did learn though was the decoder seems to favour digital servos only, the FrSky manual was a little vague but all was explained on a great thread on this forum. When connected to the normal servo output my Hitec 225 behaved normally but when connected to the Sbus decoder it struggled to return to neutral consistently and buzzed a bit.

Thread: New EDF Mini Jets- Sabre & MiG15 RCM&E 2018 Special
09/10/2018 20:12:37

Have got my CNC kit and most of the bits and peices, probably won't start it until some time November but watching this build progress with interest.

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