Rolled vs. folded plans

This is kinda sad thing. As the cost of mailing has increased I have had to make changes to product packaging. When I started this business 8 years ago I decided that I will not never ship folded plans. Mostly due the fact that folded plans are not good for building. I kept that idea for ages but then mailing costs kept creeping up. And couple years ago they crept up really. Also, Finnish postal services stopped delivering maxi-letters inside Finland. They had to keep delivering them outside Finland, so that did not really matter too much.

But then the prices jumped a bit. Last time I shipped rolled plans the cost of mailing was more that customer paid for plans. That was approx 25€. Which is bad. Really bad. Same plan shipped in envelope (folded…) cost approx 6€.

So some time ago I started changing all delivery statements in my pages (www.iwaru.fi) to not include promise of rolled plans. Currently all plans ship folded.

I know this is not optimal for some builders. So if you need rolled plans pls. contact me and I can arrange shipping rolled, with some extra cost. Also, when you order short kits plans are rolled.

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.

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:

New design project : VL Pyörremyrsky

Just an brief note, I have started new design project, VL Pyörremyrsky to size 1:6. You can check out photo gallery of that plane here.

Continued Vinka build

I Started build of Vinka L-70 back in summer 2013. For several bad reasons it got stalled for some time. This has been waiting far too long so let’s get something done. Build log can be located here. It is in RCGroups which is rather good place for this type of plane. I will occasionally update this blog, but actual stuff will be at rcg.

There has been couple other postings of Vinka in this blog. You can find them with tag ‘Vinka’ on right column OR… just press here.

Nakki II plans updated

I finalized production plans of Nakki II. Changes to beta-version were extremely minor. I did widen parts A, B, C by 5mm and adjusted some of aligning holes to better suite cocktail-sticks I am using. Finalized product page can be found at here. Only thing remaining is to wait for suitable weather for maiden flight.

Final weight, with servos, receiver, 3S360-battery, motor and all installation stuff was 208g which results to wing loading of 11,6g/dm².

Finalized Nakki II plans

Finalized Nakki II plans

Next episode of quick Nakki II-project

Done. Total weight with 3S360 is 208g.

Third day of this Quick project (Nakki II)

Pics tell everything..

Second day of short project… Nakki II

And second day of this (hopefully) short project.

Short project, build day #1

Just wanted to build something quick as I have not been able to build anything more impressive for a while. Dish of day is Nakki II. Which is translated easily to Sausage II. This has been briefly mentioned in this blog some time ago. See here.

This design uses ‘perussiipi’ which is basic wing manufactured by local vendor from styrofoam. I do dislike styrofoam, but in this case it is ok, as this is sort of ‘classic finnish modelling stuff’.

I will compile extremely short build log into this blog.