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SFS 31 Milan

Fans and Thermals.
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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

SFS 31 Milan

Post by Noël Rumers » 15 Sep 2015, 00:12

Hi,
Here I am, finally, with the nose turned into this new build, parallel to the SF27 M, the SFS 31 Milan.
What is this Milan? Well simple described, the RF4 fuselage with the wings of the SF27 glider.
So we count: 4 + 27 = 31 or the SFS 31 Milan.
I have had great help of the owners in the UK of the D-KORE and now being the G-KORE.
Measurements have shown that the RF4 fuselage was changes on a few point to make it work on the Milan. Later more about these changes.
All was redesigned over the French drawing I have out of the French scale magazine from some years back.
The drawing was highly detailed and to a very good scale standard. This made my work more easy in the end.
All was copied and the real work could start, cutting the parts the old way, by hand.
Accordingly the design of the SF27 M in the section of building threads, I like a kind of jig saw puzzle.
This is the system I used again.
Noël
Attachments
7912241492_67e84a5405_z.jpg
0470001parts milling.JPG
20150001Milan fuselage.JPG
20150002Milan fuselage.JPG
20150003Milan fuselage.JPG
20150004Milan fuselage.JPG
20150007Milan fuselage.JPG
20150014Milan fuselage.JPG
20150015Milan fuselage.JPG
20150016Milan fuselage.JPG

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 16 Sep 2015, 10:07

More work done now.
I finished all cutting and drilling by now.
Also the top and bottom spars are glued together.
A dry fit was also tested and all looks OK for now.

Noël
Attachments
20150022Milan fuselage.JPG
20150023Milan fuselage.JPG
20150024Milan fuselage.JPG
20150025Milan fuselage.JPG
20150027Milan fuselage.JPG
20150029Milan fuselage.JPG
20150030Milan fuselage.JPG
20150031Milan fuselage.JPG
20150032Milan fuselage.JPG
20150034Milan fuselage.JPG

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 16 Sep 2015, 10:09

More pictures...
Noël
Attachments
20150018Milan fuselage.JPG
20150019Milan fuselage.JPG
20150021Milan fuselage.JPG
20150036Milan fuselage.JPG
20150037Milan fuselage.JPG

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Peter Balcombe
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Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: SFS 31 Milan

Post by Peter Balcombe » 16 Sep 2015, 11:41

Looking good Noel.
I will be following with much interest.
Peter

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 16 Sep 2015, 13:23

Hi Peter,
Now the building will go till the end of both models, the Milan and SF27 M.

As promised I wanted to build ours 1/3 scaled first before having a PDF made of the drawings.
Good I did, in every design are always small bug that get into a design.
Also with this one although the checked and double check...the good thing was I had no need of cutting new parts due to the bugs.
I could change the minor mistakes in time.

I will change the drawings soon, so you can move on as well.
Noël

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 16 Sep 2015, 23:31

More work was done today to clean the formers and other pieces.
Again a dry fit was carried out to make sure that all fits properly.
The landing gear former...this is of special interest to us.
I have seen two fuselages, one 1/3 scale and one 1/2.5 scale, which needed a lot of reinforcement to hold the gear in at all times.
Nothing can be said about leaser cutting, but in both cases the formers were in layers of 3 mm ply with slots to get all together.
Cutting one slot from the bottom and the matching part from the top with glue is not strong enough for this purpose.
That is why I made a 14 mm thick ply former, being former 5 and 6 mm and former 5.1 being 9 mm ply glued together. I did cut a rectangular hole out in this formers, to be able to push the wheel box side tongue through this hole. This tongue matches with the seat former, that will be glued head to head and then supported by a double piece that is pushed in from behind. This double pc has also a tongue that will be glued to the wheel box side from the inside. This way the 14 mm (maybe a bit too strong) former will hold the landing gear under any landing condition.
Noël
Attachments
20150039Milan fuselage.JPG
20150040Milan fuselage.JPG
20150041Milan fuselage.JPG
20150042Milan fuselage.JPG
20150043Milan fuselage.JPG
20150045Milan fuselage.JPG
20150047Milan fuselage.JPG
20150049Milan fuselage.JPG
20150050Milan fuselage.JPG

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 17 Sep 2015, 23:54

More work done today,
Noël
Attachments
20150051Milan fuselage.JPG
20150052Milan fuselage.JPG
Servo support with reinforcement spruce spar
20150053Milan fuselage.JPG
New dry fit with rood rib
20150054Milan fuselage.JPG
...and wing joiner tube
20150055Milan fuselage.JPG
14 mm ply for the retract wheel
20150056Milan fuselage.JPG
bottom side spars in side panel
20150057Milan fuselage.JPG
Reinforcement strip on the inside of the side panels
20150058Milan fuselage.JPG
cutout for the servo support rail
20150059Milan fuselage.JPG
side double panel installed

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 20 Sep 2015, 21:42

No time to post...
here the progres.

Noël
Attachments
20150060Milan fuselage.JPG
20150061Milan fuselage.JPG
20150062Milan fuselage.JPG
20150063Milan fuselage.JPG
20150064Milan fuselage.JPG
20150065Milan fuselage.JPG
20150066Milan fuselage.JPG
Landinggear strong box
20150067Milan fuselage.JPG
20150068Milan fuselage.JPG

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 20 Sep 2015, 21:47

...a few more...
So far so good!
Noël
Attachments
20150069Milan fuselage.JPG
20150070Milan fuselage.JPG
20150071Milan fuselage.JPG
20150072Milan fuselage.JPG
20150073Milan fuselage.JPG
20150074Milan fuselage.JPG
20150075Milan fuselage.JPG

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Noël Rumers
Posts: 261
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers » 20 Sep 2015, 21:51

And more from today...
The rear and the front were glued together.
The top is the canopy line from firewall to the elevator and rudder platform.
The turtle back will be glued on later.

Noël
Attachments
2015 09 200001Milan fuselage.JPG
2015 09 200002Milan fuselage.JPG
2015 09 200003Milan fuselage.JPG
2015 09 200004Milan fuselage.JPG
2015 09 200005Milan fuselage.JPG
2015 09 200006Milan fuselage.JPG
2015 09 200007Milan fuselage.JPG
2015 09 200008Milan fuselage.JPG
2015 09 200009Milan fuselage.JPG
2015 09 200010Milan fuselage.JPG

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