Free downloads / 3d-models at our site(s)

Okay, some time ago my extranet-site of main eCommerce site (www.iwaru.fi) broke down. I got some comments regarding problems with it’s id system which is extremely simple and straightforward. As there is very little commercial value on those items which are downloadable via extranet I decided to make things simpler. This is to remove all user id systems of extranet and re-create it here.

So now all freely downloadable stuff has an separate index-page which is visible at top menu of this site. That means, all files which are supposed to be on old extranet and files presented in this blog have their place in index. And there is no user id’s to remember (or distribute for that matter).

Direct link to index-page.

There is possibility of human error here. I tried to gather all files which were supposed to be in old extranet, but… I might have missed something. That happens. Contact me if you miss something.

Aerotow hook printed by @shapeways

Just received final professionally printed version of Aerotow-hook (see all notes about this) from Shapeways. It looks gorgeous. The openings are not really open, but it does not matter as they must be drilled to spec anyway. It feels slightly heavier than PLA-printed version, but that does not really matter.

This process of first designing product in 3d-cad, then prototyping it with home printer and finalizing it with shapeways is really working. The home printed version has limited strength but this shapeways ‘strong and flexible’-material is extremely strong. Shapeways also have really, and I mean really fast & professional service. You can get your copy of this version from shapeways.com (direct link to product). Also I’ll try to embed shapeways product info directly below. Let’s see how it turns out.

Also, just an reminder – if you want to print this directly in your home printer, or ask shapeways (or some other commercial printer) to print it for you just download this file aerotow S 06. It is ready .STL-file, identical to that in shapeways.

Send me photos if you try this out. Thanks in advance!

3d-printed aerotow hook done

Ok, this is now done. For maiden use I have to wait until weather will get warmer. It might take 6 months or something. I still made some changes to design and then printed final version. Some notes regarding printing & actual installation:

  • Use infill of approx 70%
  • I used temp 205c
  • Use normal speed, ie. do not use faster than normal speed

With these settings and my Miniboy this thing takes approx 2-3hours to print. Then actual installation is breeze.

  • Final weight including MG-14 servo is 32g but this varies with printing settings
  • All holes must be drilled for final spec.  STL-file contains holes set so that servo screws are 2mm, installation holes are 2mm and hook pin is 3mm.
  • I used 3mm brass tubing for pin with piano wire epoxied into it for servo actuation, I drilled pin hole to 3.5mm

Just as christmas is approaching I decided to set this to public download. You can copy it from aerotow S 06 (I had to put it into .zip file as wp does not allow .STL-files as media files). As 3d-printers are somewhat rare I also set up shapeways account so that you can get it printed. You can find it here. Actually, I have not printed this using shapeways, but they make great models out of normal .STL-files so this should work well. But just to be cautious I set this product to beta. If there are problems pls. let me know. Also, I am well aware that the use of MG-14 is a bit risky, but this is inteded for light aerotow of light planes etc.

Some pics of final sprint are below.

This is first design I have done with 3d-cad. Or actually I have done several ‘things’ which are used in several places, but this is first which has any further use. I am quite happy with Autodesk Fusion 360, but the learning curve was quite steep for me, I have long history of 2d-cad work and model aeroplane design. This new tool is an new tool requiring adaptation of workflow and different mindset.

Still, final design looks kinda spiffy 🙂

Final

Final disclaimer : this has no guarantee whatsoever. It might work in it’s inteded use or then again it might not.

Edit : I added video of Z-400-maiden. It was year 2008 and weather was bad. Really bad.

Model Aeroplane Enthusiast Colouring book vol 4.

And the volume 4. of Model Aeroplane Enthusiast colouring book…

Model aeroplane colouring book vol 4

Model Aeroplane Enthusiast Colouring book vol 3.

And then to next volume of colouring book.

Model aeroplane colouring book vol 3

Second Model Aeroplane Enthusiast Colouring book

And to continue from vol.1 of model aeroplane enthusiast colouring book, here is second vol. Enjoy!

Model aeroplane colouring book vol 2

 

Model aeroplane enthusiast colouring book vol 1.

Here is something funny. I have noticed that adult colouring books are all the hottest rage today. So I decided to make my own. Targeted directly to scale model aeroplane enthusiast. How niche is that?

These pics are taken at Jämi Scale Open -event this summer and with a bit of photoshop magic they turned into colouring pages. How wonderful… Click this link to download your very copy of Model aeroplane colouring book vol 1 (pdf, 3,5mb). Print it and start colouring right away.

Update : I made couple more of these. They have been scheduled to appear here approx weekly. So if you want to keep up with colouring books aeromodelling-style subscribe for updates, see right column and look for subscribe-text.

Gluhareff S-22 & Adaridi SK24 update!

Well, this is Finnish aviation history news.

My friend from Kuopio commented in last aerotow event that ‘You, Tuomas have this interest in old planes, I have found an old book in my old relatives cupboard which might be of interest’… It turned out that his relative was some sort of inventor and he had an authentic book from 1924 with name ‘Moottorittomat Lentokoneet ja heikkomoottorilentokoneet’ by B. Adaridi, 66 pages. This is extremely rare book in which mr. Boris Adaridi explains flying  with ‘Motorless aeroplanes and Avionettes’. AND it has the same plan of every mans glider as in Suomen Kuvalehti 1924.

Which I have featured in my Gluhareff S-22-page. You might remeber that I have built S-22 and the plans are freely downloadable at my site, check previous link.

The difference is that this version is much cleaner and it has much greater detail. Also, reading book I get much more detailed information of brothers Gluhareff flying attempts along. Some snippets of information below.

k1

Remember this picture. It shows S-22 and other glider of their design, M-3. I have often thought of this picture looks somewhat strange. That M-3 looks a bit odd. Well, it turns out that the explanation is written in text. It says ‘In picture (35.) one can see how badly plane has been damaged in one particular flight.’. Well, it explains deformed plane…

 

k2

Then another pic of S-22 from above. I have not seen this picture  ever before.

 

k3

And finally, for me never before seen pic of ridge brothers Gluhareff used for flying attempts.

All this is pretty exiting and adds to this story of three strange men in Finnish woods trying to make soaring attempts. And eventually succeeding.  B. Adaridi then went on to design Adaridi AD3 and then moved to France. Brothers Gluhareff moved to US. Most of this book is around designing light planes, just like Adaridi AD3.

Then to SK-24. If you have read through the original story (bottom of page here) and downloaded original scans you might want to download new, much cleaner scans. Previews below, for full resolution scans press SK24-pages-1-3-02-bw (14mb zip file).

Page 1. 3-view

Page 1. 3-view

Page 2. Details

Page 2. Details

Page 3. Parts.

Page 3. Parts.

HowTo : Model aeroplane transport supports for light trailer

Here in Finland (and in many other Nordic & European countries) we have thing called light trailer. They are, as name states, light trailers for transporting things like sacks of gravel, soil, leaves, etc. Or lawn mover. Nice and handy, somewhat economical and come in different sizes. We have had numerous debates on what is The Best Way to use them for transporting your modelling stuff. Hopefully in one piece. This HowTo tries to explain one way to do it. There are numerous attempts, this just my humble way. It does have it’s merits as I’ll soon explain.

Before starting : get an trailer which has both leaf springs and shock absorbers. If you opt to buy cheaper model which has only leaf springs and possibly rubber grommets to limit movement of wheels you will be sorry. That type of trailer is extremely jumpy. And it will break your planes soon enough.

Key reasons of structure:

  • It has unlimited adjustability, as everything is based on matrix of attachment holes it can be modified easily.
  • It is not screwed to trailer. It holds in place because of main timber elements are sized so that they do not move.
  • You can pick support up from trailer easily in case you need to use trailer to something not so nice. Like transporting dirt.
  • When not in flying season it can be easily dismantled and stored for next season.
  • If you get new trailer, or as I dream of getting mobile home you can make new set of matrix structure (longitudial and cross elements) and supports are again usable.

I will explain the structure via an number of pictures. You should check out rough sketch I draw of the design. Check it here 169-01 Transport support 01. (yeah, strange name? project 169, sheet 01, version 01..).  Pics enlarge by clicking them. Hover over pic’s to read captions.

Everything starts with empty trailer. You need plenty of timber to make this structure. Best timber is fully planed and corners rounded. Actually it is (almost) most economical stuff here. Good lumberyard is your friend. First elements must be full-length compared to trailer floor. You must drill holes to to centerline of timber with distance of X between hole centers. This is not critically precise. Just keep distance constant. I used one short plank as an guide. Suitable distance is approx equal to timber width. ie. 95 x 19 timber = 10cm distance. Hole size should be 1mm (or 2mm) larger than screw size. I am using screw size 6mm (= M6) so hole should be 7/8mm. To get suitable size check your blind nut size.

At the same time you should cut crossing timber, again covering the whole floor of timber. I use approx 3 longitudial pieces and 5 crossing pieces. My trailer is 3m x 1,3. Again, drill holes with same measurements. Then proceed on making needed number of supports. Some rough examples are in drawing, feel free to design more. Send me pic if you build something awesome :).

EDIT : Corrected screw size. It was supposed to be M6, ie. 6mm screws etc.

Pictures for your viewing pleasure:

PIK-18 Sytky Peanut released to free download

Hi,

just an quick note, I released Peanut version of PIK-18 Sytky into free download. Steer your browser to http://iwaru.fi/sytky-peanut.html

 

 

 

 

 

 

Flight video here, this plane has been built by Mr. Tapio Linkosalo :