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Topics in Category: Construction Techniques & Aeromodelling Materials.

emo
Views: 941
Replies: 12
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Tony B's Avatar
Topic started 20 May 2014 21:06 by Tony B
Dear people. i am looking for a cheap supplier of depron and some advice on using it. thank you Tony Bennett.
Tony B's Avatar
Last Post by Tony B 23 Apr 2015 21:14
hello John. nice to have you here. welcome. tony.
emo
Views: 57
Replies: 2
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discus.fly's Avatar
Topic started 15 Apr 2017 18:09 by discus.fly
How does one apply vinyl transfers? Graphics I have purchased are printed on Ritrama paper which has three layers. A thick backing paper with alignment marks, the vinyl graphic and then a thin semi transparent outer sheet. Assuming one peels off the thick backing and apply the graphic to the model...
Tony B's Avatar
Last Post by Tony B 15 Apr 2017 20:47
That's about right discus. it's how i do it. Tony B
emo
Views: 1287
Replies: 33
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Andy Sephton's Avatar
Topic started 18 Feb 2015 21:55 by Andy Sephton
This one started in the chat room, so rather than loose the info I've put it in a thread: - Flytilbroke came up with a comment that he uses old CDs and DVDs as mixing plates for glues, etc. I've done the same and I use old knife blades to do the mixing, leaving them to dry in the glue after use for...
THE BLACKBIRD's Avatar
Last Post by THE BLACKBIRD 21 Feb 2017 18:57
Very neatly done Sir
emo
Views: 530
Replies: 15
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Tony B's Avatar
Topic started 01 Feb 2015 17:34 by Tony B
Now this is my method, whether it is the correct way or not does not matter, it works fine for me. First job is to select a good picture from the internet of your chosen aircraft. then print it out onto A4 paper. I have chosen the KK Caprice as it is a model i want to build at some point. Once...
Tony B's Avatar
Last Post by Tony B 06 Feb 2017 16:53
but this site won't load "heavy" pictures. i have to take them like this so that the editors can play with them. so i have to host them on photobucket and upload them as linked to there. hey ho pip and dandy. Tony B
emo
Views: 223
Replies: 25
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Ralpharr2001's Avatar
Topic started 09 Jan 2017 23:03 by Ralpharr2001
Need some guidance guys. I am having a blond moment. I am building a 64" Curare from the outerzone plan - www.outerzone.co.uk/plan_details.asp?ID=5527 . Yes I know I should be getting on with the Gannet but I just wanted something quick to build. :evil: The plan states 1 degree positive...
Garry Pollard's Avatar
Last Post by Garry Pollard 11 Jan 2017 23:31
Had one of those days, however have taken a couple of photos, I think [attachment] [attachment] Note to myself, must do better lol Garry
emo
Views: 181
Replies: 10
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Andy Sephton's Avatar
Topic started 24 Nov 2016 10:50 by Andy Sephton
Following a side conversation and request from Septic, the following shows the steps I go through to create printed tissue for use on models. The technique can be applied to other media, but in all cases, I take no responsibility for the mess you make of your printer... ;) ;) You will need: -...
one tenor's Avatar
Last Post by one tenor 25 Nov 2016 13:11
Thanks Andy Really useful to know.
emo
Views: 219
Replies: 11
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THE BLACKBIRD's Avatar
Topic started 16 Nov 2016 09:38 by THE BLACKBIRD
Yesterday I thought I would make a vac forming thingy So had a look at the scrap wood from the SR71 coffin and wire from the fence and abit off the back of my band saw for connecting the hoover [attachment] [attachment] It has to be 650mm long and 400mm wide for the canopy on the A10...
THE BLACKBIRD's Avatar
Last Post by THE BLACKBIRD 21 Nov 2016 19:41
Had a boring half hour with a piece of 5mm ply [attachment] Fixed it in place of the wire mesh [attachment] Just laid a sheet of acetate on it with the frame loosely laid on and got a good vacuum [attachment] With no sagging of the ply
emo
Views: 119
Replies: 2
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Andy Sephton's Avatar
Topic started 11 Nov 2016 14:55 by Andy Sephton
There's at least two of us on the Forum that use the Craft Robo cutter/plotter to define complex shapes and cut masks/decals/etc from various materials. I've referred to it in at least one of my threads, as has Septic in his Scale Indoor RC Cub build. I've started this thread as a development of...
Andy Sephton's Avatar
Last Post by Andy Sephton 11 Nov 2016 18:40
I can't see a defined angle, but sizing is not an issue. The following two pictures are screen shots of a line and a box - I've had to draw one 'end' of them 'off screen' in order to make a screen shot possible, but hopefully the message is clear. Both the vertical and horizontal distances are...
emo
Views: 144
Replies: 3
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Andy Sephton's Avatar
Topic started 06 Sep 2016 12:53 by Andy Sephton
I was asked by martini in my Avetek Tiger Moth thread which airbrush book I used, so I thought it might be worthwhile starting a separate airbrush thread here. Feel free to add any snippets on techniques, etc as you see fit. I bought my first Airbrush second hand in 1995 when I started building...
Eric's Avatar
Last Post by Eric 06 Sep 2016 19:33
I have an assortment of airbrushes, a compressor and reservoir tank, that I've never used (yet!) that came to me from a now deceased friend. I have some destruction books, intended for railway modelling, but the same principles apply - Airbrushing for railway modellers - George Dent - - isbn 978...
emo
Views: 186
Replies: 7
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box's Avatar
Topic started 06 Jun 2016 10:53 by box
Does such a thing exist and if so, what make and where from please? I am banished from the house if I am usung the smelly stuff and have to do it outside. On a chilly day, this of course affects the hardening time and so delays the build. I don't use it that often, but do find it quick and useful...
box's Avatar
Last Post by box 07 Jun 2016 21:31
Sorry for delay, I've just been away for a little while. The two types I have been using are Cyberbond and NHP (Northeast Hobby Products) and believe me, they do stink. I will now try some of your suggestions and see what reaction, if any, I get from my Wife! Thanks for the help. box.
emo
Views: 396
Replies: 10
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Andy Sephton's Avatar
Topic started 12 Jan 2016 18:19 by Andy Sephton
This one's for Ralph! I'm currently re-covering my Gloster Gannet. The initial covering job went disastrously wrong when the paint I used proved to be incompatible with the dope! The main build thread covers the issues and probs so far, but as Ralph requested a covering thread, I thought I'd put...
Andy Sephton's Avatar
Last Post by Andy Sephton 17 Jan 2016 13:38
There was probably nothing wrong with your methods Garry, but thanks for the kind words anyway! In most cases, getting it 'right' is a simple matter of knowing how to solve the probe when it goes wrong....... which leads me to more technique: Sanding off the excess tissue often leaves a feathery...
emo
Views: 225
Replies: 1
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one tenor's Avatar
Topic started 29 Jun 2015 04:04 by one tenor
I read somewhere that someone was using a quite pricey kit for gap filling with Cyano. No need for that . I use BICARBONATE OF SODA. I sense puzzled looks at this point ,but yes soda bic. What the yanks call baking soda ( not our baking powder, ALTHOUGH that might work too ) The Method is to...
Mowerman's Avatar
Last Post by Mowerman 29 Jun 2015 10:23
With my building skills I often have gaps to fill, I use balsa dust (collected when sanding ) and cyano as above.
emo
Views: 427
Replies: 1
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Tony B's Avatar
Topic started 08 Feb 2015 20:11 by Tony B
Covering a depron model with brown paper and pva. Well you have built your nice new depron model and it is looking very pretty, but what do you cover it with to protect it from the dreaded hanger rash, hmm. There are a few choices of covering that can be used :- Tissue and a water based sealer....
Garry Pollard's Avatar
Last Post by Garry Pollard 08 Feb 2015 20:19
Brilliant Tony, well presented and explained . You are very good at this, I think several mags could do worse than letting you do a regular column . Garry
emo
Views: 573
Replies: 1
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Tony B's Avatar
Topic started 05 Feb 2015 21:37 by Tony B
This was going to be an article in rc model flyer magazine, but as we all know the magazine folded. :( Depron. Have you ever used it. Have you ever thought of using Depron foam for large sized models, by large sized I mean models of over 48 inch wingspan. The thought of using Depron as a building...
blue123's Avatar
Last Post by blue123 06 Feb 2015 11:53
[attachment] [attachment] Great work Tony, good read
emo
Views: 1174
Replies: 19
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alan cantwell's Avatar
Topic started 06 Apr 2014 11:29 by alan cantwell
Following on from a chat room chat about the design of this models under cart mount and spring system, The problem with this design is, the torque rods a large diam, and tooooooo short, A torque rod system works well with length, the shortness of this version makes it too rigid, resulting with a...
The Beard's Avatar
Last Post by The Beard 08 Apr 2014 00:02
I remember Alan and you deserve to pull it apart it should be sand there attitude stinks.However evry report of a model Ive built has been correct .I think ive been lucky sand picked up on the bad ones.However I was surprised hoew easily my Hanger 9 under carriage came off and my Blackhorse Travel...
emo
Views: 473
Replies: 2
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Warren2i's Avatar
Topic started 17 Mar 2014 20:47 by Warren2i
Plastisteel will change the way you make parts. It’s a commercial grade thermoplastic that softens enough to be formed into any shape at around 62 – 65 C. You simply heat the pellets in hot water or with a hair dryer. It hardens at room temperature to form a tough plastic material similar in...
Eric's Avatar
Last Post by Eric 18 Mar 2014 13:07
Nothing new about this material - it's been around for about ten years, under various names. I've seen it used for making temporary nuts or bolts, as a get-you-home fix, or an instant door-key, when the one you have has snapped (typically a Yale!) It can be stuffed into an over-sized hole, then...
emo
Views: 623
Replies: 9
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Geoff dales's Avatar
Topic started 07 Feb 2014 19:49 by Geoff dales
I've picked up a big box today containing a blackhorse Macchi :woohoo: . It's a lovely built thing and well covered but it's shiny :( . Now I want to Matt it down I'm thinking satan fuel proofer now do I use some form of spirit wipe first or will that damage the covering or do I flat slightly with...
alan cantwell's Avatar
Last Post by alan cantwell 08 Feb 2014 15:07
NO PROBLEM, all it took was some detective work, i knew folk who knew, simples :)
emo
Views: 511
Replies: 4
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Dean M's Avatar
Topic started 25 Nov 2013 11:03 by Dean M
I'm not sure if I have asked this before. On my Kavalier somehow I managed to mount the engine a lot further forward than what is on the plans! Will this have any detrimental effects? I need to make a balsa cowl which I was going to do after I had maidened it but the firewall will be covered in...
Eric's Avatar
Last Post by Eric 26 Nov 2013 21:47
There's always that! :P You can always cheat, and add a sub-fin, or make a strake a bit bigger!
emo
Views: 1842
Replies: 30
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Keith T's Avatar
Topic started 20 Aug 2013 11:16 by Keith T
Guys I am starting the build of my spitfire (ARTF) and have some servo-less retracts arriving today. I removed the covering from the wheel recesses and the section that the retracts fit into is made of balsa! The 4 screws that will hold the units actually screw into balsa :huh: Is that a total...
Keith T's Avatar
Last Post by Keith T 25 Aug 2013 18:42
Thanks Dean - my first ever attempt at something like this. I'm actually really loving it. Once I get the build fully underway, I'll perhaps start a thread about it. HF
emo
Fitting cowls
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Views: 3956
Replies: 15
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Dean M's Avatar
Topic started 14 Jun 2012 19:28 by Dean M
I am getting to a point with the Deagostini spitfire of trial fitting the engine cowl, It uses self tappers through the cowl into some wood but i find the screw heads look a bit ugly is there a way to hide them?, paint them? or use a different method? This is also something I am thinking about for...
Grumpy42's Avatar
Last Post by Grumpy42 11 Jun 2013 10:24
Cowl - noun. An infuriating object that takes hours to construct. Once completed in all it's pristine glory it will steadfastly refuses to fit. Once it IS fitted all attempts to remove it, access the needle valve or any other part of the carburettor will not work. WARNING - trying to tighten engine...
emo
Views: 1111
Replies: 8
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Tony B's Avatar
Topic started 28 May 2013 22:37 by Tony B
hello. I am going to experiment with a part built balsa wing i have to see how strong a traditional wing will be with a depron skin over balsa ribs and spars. the reason for this is that i am looking for ways to be able to continue building larger models without breaking the bank financially. so i...
Quorneng's Avatar
Last Post by Quorneng 29 May 2013 14:37
Depron has a strength to weight ratio similar to balsa but it is rather more flexible. So two geometrically similar structures of the same weight might carry the same load but the Depron one would bend rather more doing it. As Depron is a lot lighter than balsa it is more suited to the smaller end...
emo
Views: 679
Replies: 11
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Klipkopwildlife's Avatar
Topic started 17 May 2013 13:22 by Klipkopwildlife
I have a problem! No Phil not that kind of problem! :) Modern petrol or diesel weed wackers, strimmers, call them what you will, have a plastic fuel tank. Due to poor handling techniques, (mostly 'don't give a shit') and despite copious retraining, I have 2 fuel tanks that are cracked, and are...
Garry Pollard's Avatar
Last Post by Garry Pollard 18 May 2013 12:38
The above two posts are the reason I use the epoxy system. Once bitten twice shy Garry
emo
Views: 522
Replies: 3
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Grumpy42's Avatar
Topic started 16 May 2013 08:37 by Grumpy42
I noticed Pol wished for some examples of tissue and dope covering on another thread. So here goes with my feeble efforts. 1. Tissue and dope: The model is a Lanzo Bomber: - [attachment] The Materials - dope and tissue, a brush and Acetone to thin and clean up. [attachment] Tissue applied with dope to...
Eric's Avatar
Last Post by Eric 16 May 2013 18:46
The tish method I was taught (and no longer use) was very similar to Quorneng's - spray the tish before cutting to size, and let it air-dry until it is just damp, that 'relaxes' the fibres, and the creases where it was folded drop out. Then thinned dope to seal the edges, when dry cut and trim, then...
emo
Views: 547
Replies: 5
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Dean M's Avatar
Topic started 04 Apr 2013 10:00 by Dean M
I am looking at how to fit my air retracts to my B17 but I am not sure what type of wood to use. Would 1/4" birch ply be ok? Or would some blocks of bass wood be better?
alan cantwell's Avatar
Last Post by alan cantwell 05 Apr 2013 15:32
This question was once posed on the LMA forum, i commented that bass wood, or spruce was the place to go, more than one member came back with the stuff splinters easy, and the best stuff was high quality marine ply 6mm to 8mm thick, depending on the size of model,
emo
Views: 4599
Replies: 3
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Eric's Avatar
Topic started 23 Feb 2012 05:15 by Eric
NOTE This method is not accurate! It gives you a good safe point to start from, ie slightly nose heavy MOST OF THE TIME!!! [attachment] The first one is easy, a parallel chord wing, merely take one third of the chord, and that is your safe start point. Another way is to assume the spars are...
Eric's Avatar
Last Post by Eric 09 Mar 2013 18:35
Interesting! I just drew this diagram out for BB's Revolver thread, and it is exactly the same as the one I posted last year, including the squiggle of fluff on the paper, and the 1/3 measure that got cropped off! Is someone 'playing?' :cheer:
emo
Views: 555
Replies: 6
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Mossie's Avatar
Topic started 05 Mar 2013 21:37 by Mossie
Can anyone give me a top tip or article for fibre glassing so I can add too my flying club news letter? Some at the club use glass cloth with deluxe eze-kote products, it would be much appriciated. Regards Mossie
Eric's Avatar
Last Post by Eric 06 Mar 2013 00:33
That's it - more recent than I thought! Thanks OF.
emo
Views: 577
Replies: 5
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Dean M's Avatar
Topic started 22 Feb 2013 01:51 by Dean M
On my TN B-17 I want to fit split flaps, I have bought the cnc pack so have all the ribs cut out. This is a picture of the ribs on the plan, will it be better to cut the ribs for the split flap before I have made a skeleton wing? what is the best approach for this? should I look at photos of B-17s...
Polyphilla's Avatar
Last Post by Polyphilla 22 Feb 2013 12:02
Quote: On my TN B-17 I want to fit split flaps, I have bought the cnc pack so have all the ribs cut out. This is a picture of the ribs on the plan, will it be better to cut the ribs for the split flap before I have made a skeleton wing? what is the best approach for this? should I look at photos of B-17s...
emo
Views: 1282
Replies: 27
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Walrus's Avatar
Topic started 14 Feb 2013 09:49 by Walrus
I am attempting a scratch build of a plane and was wondering if there was a formula or ratio for wing surface area to tail surface area?[image] Also are there any rules governing fuse length
Eric's Avatar
Last Post by Eric 20 Feb 2013 18:53
And the other bit that goes cross-ways - we call it a tailplane, they call it the horizontal stabilizer. ( eight syllables versus two!) ((It's the inverse of using a short word when a diminutive one will suffice)). :P
emo
Views: 609
Replies: 6
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Dean M's Avatar
Topic started 22 Jan 2013 21:10 by Dean M
Hello I have to make a balsa cowl for my kamco kavalier but I have never done this before, It is going round a lovely smelly anti social engine :evil: :lol: Can anybody give me some step by step instructions or some top tips? Thanks Dean
Garry Pollard's Avatar
Last Post by Garry Pollard 23 Jan 2013 21:21
So long as the C of G is right, it doesnt matter if the cowl is fitted or not. The model wont know :) :) Garry
emo
Views: 498
Replies: 5
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Tony B's Avatar
Topic started 18 Jan 2013 22:07 by Tony B
trying to get my head round designing the slot flaps for my new build. i have the drawings of the original system, but just cant get my head round how they work and if there would be a simpler way of doing it for a model.
Eric's Avatar
Last Post by Eric 19 Jan 2013 20:19
en.wikipedia.org/wiki/Flap_%28aircraft%29 and scroll down about halfway.
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