This is an extremely nice model built (or actually rebuilt) from Marutaka kit with heavy modifications. For full (and long) story pls. see build log in RCGroups. Ilkka has gone great lengths to replicate all elements of original plane. Even all stickers and warning labels have been copied from pics of original plane and then put to this model. Attention to detail is impressive.
Plane flies really well and it is impressive, really slow flight speed. Really nice & awesome model.
Some detail pics.
I think that this model defines whole idea of awesome model. It is an impressive sight and you can feel it’s presence. Yep, it has Moki 250 which really allows you feel the sound of it’s motor. It’s an really crowd pleaser in flight as it flies in real scale manner. It looks like it has escaped from 1940’s war movie. Really awesome model. There is an long build thread in (finnish) at lennokit.net. (pls. note, you have to register to see pics and it is really in finnish).
And to the main event of Finnish summer scale scene. I would like to quote my wife who is just-a-bit picky when it comes to model aeroplane events : ‘this is really nice, there are so many nice models and somebody is flying all the time’. You really cannot say anything against that. And the weather was great too.
Yes, venue was Jämijärvi again, as last year event. This time the main runway was paved couple weeks prior to event. Also there was great taxi-area. Flying organized by itself quite well and there were zero crashes. There was some light showers but luckily they took place while we were eating/something. There was also some maidens with one junior maidening new plane with goal of participating competition within couple weeks. Impressive progress.
Below you will find couple pics showing atmosphere. I will add some special galleries to show some awesome models. It will take some time as I took close to 2.200 pics during event. Whew.
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).
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.
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!
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 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.