SFS 31 Milan

Fans and Thermals.
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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 » 30 Sep 2017, 00:30

...and then the most difficult of all: "The Cowl".
The mould was ready now, and to make the top and bottom moulds, not that simple...
The spinner line was also not the dividing line on the two sides.
See the drawing. The height difference was 8 mm.
A piece was made that fitted around the cowl outlines like a glove.
The very small gap was sealed off with TEC 7, have it set and then cut of so a very nice gap free support was made. Due to the waxed plug, the TEX 7 will not stick hard to the plug and can be taken off easy.
All was again waxed so it will come of easy.
Sorted in the end and now the bottom part was made first.
The top part will be for tomorrow.
Noël
Attachments
2017 0004cowl.JPG
2017 0006cowl.JPG
2017 0007cowl.JPG
2017 0009cowl.JPG
2017 0012cowl.JPG
2017 0013cowl.JPG
2017 0014cowl.JPG
2017 0016cowl.JPG
2017 0017cowl.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 » 03 Oct 2017, 01:16

...the bottom part was ready and hardened out. Now the support part could be removed, but carefully, not to push the bottom mould of...
This was done in steps. All went well and the edge, containing the TEC 7 gap filler could be removed and waxed as well.
With that done the top part was made the same way.
First the gel coat was put on to have it set a bit, next the glass with epoxy.
This morning the parts could be taken of the plug...
All was very easy and later the plug was unscrewed from the front fuselage.
A gentle push and it was of as well.
I did cut the plug to the right size and put it back in both the bottom and top part to mark the cutting line once the real parts are made.
Later I grinded the edges down so all was a bit safer to handle.
Now both mould must be cleaned and waxed to start making the cowl that goes on the fuselage.
Noël
Attachments
2017 0016Milan Cowl.JPG
2017 0017Milan Cowl.JPG
2017 0018Milan Cowl.JPG
2017 0019Milan Cowl.JPG
2017 0020Milan Cowl.JPG
2017 0021Milan Cowl.JPG
2017 0022Milan Cowl.JPG
2017 0025Milan Cowl.JPG
2017 0028Milan Cowl.JPG
2017 0031Milan Cowl.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 » 03 Oct 2017, 01:19

...and more...
Attachments
2017 0032Milan Cowl.JPG
2017 0036Milan Cowl.JPG
2017 0037Milan Cowl.JPG
2017 0040Milan Cowl.JPG
2017 0042Milan Cowl.JPG
2017 0044Milan Cowl.JPG
2017 0045Milan Cowl.JPG
2017 0046Milan Cowl.JPG
2017 0048Milan Cowl.JPG
2017 0051Milan Cowl.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 » 03 Oct 2017, 01:25

...also the covering of the turtle back is started. Due to the little bend in the top line, this had to be done in two parts.
The first part is one and the second part is ready to be glued in place.
I made paper design first before cutting the 0.6 mm ply.
Noël
Attachments
2017 0006fuselage turtle back.JPG
2017 0007fuselage turtle back.JPG
2017 0009fuselage turtle back.JPG
2017 0010fuselage turtle back.JPG

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Peter Balcombe
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Location: Clevedon, North Somerset, U.K.

Re: SFS 31 Milan

Post by Peter Balcombe » 03 Oct 2017, 09:45

Wonderful as always Noël :D

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

Re: SFS 31 Milan

Post by Noël Rumers » 11 Oct 2017, 01:15

Thanks Peter!
Here is a bit more...progress is slower than hoped for...
The rudder is sorted now and ready to cover.
I added a small wedge to have it fixed even better.

Noël
Attachments
2017 0123Milan rudder.JPG
2017 0124Milan rudder.JPG
2017 0125Milan rudder.JPG
2017 0127Milan rudder.JPG
2017 0128Milan rudder.JPG
2017 0130Milan rudder.JPG
2017 0133Milan rudder.JPG
2017 0011fuselage turtle back.JPG
2017 0012fuselage turtle back.JPG
Last edited by Noël Rumers on 11 Oct 2017, 01:21, edited 1 time in total.

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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 » 11 Oct 2017, 01:19

Also the elevator is sorted now and got the LE and tip blocks sanded to shape.
All ready to cover.
The turtle back of the fuselage is finished too.
Now the controls and cables must be build in before closing up the fuselage sides.
Noël
Attachments
2017 0068elevator construction.JPG
2017 0070elevator construction.JPG
2017 0071elevator construction.JPG
2017 0072elevator construction.JPG
2017 0075elevator construction.JPG
2017 0076elevator construction.JPG
2017 0077elevator construction.JPG
2017 0078elevator construction.JPG
2017 0080elevator construction.JPG
2017 0082elevator construction.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 » 11 Oct 2017, 22:38

The cowl is now under construction, meaning, epoxy and glass fiber work.
Noël
Attachments
2017 0059Milan Cowl.JPG
2017 0060Milan Cowl.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 » 22 Oct 2017, 00:45

And work goes on...
The cowl came easy out the mould. All was cut and grinded down to the good shape. The holes were drilled for the screws and the two halves came together as they should.
It was screwed to the top of the firewall with one screw. Perfect fit it is.
The only spinner that I found that was a bit longer than the dia, was from PAF modellbau in Germany. The diameter had to be 64 mm to scale.
The engine was screwed on to fit the cowl onto too.
The ignition cable for the G38 just pops out as well as the elbow of the exhaust which toughed the bottom of the cowl.
Also a hole was cut in the rear bottom part to have a better cooling of the cylinder/engine.
So far so good and the spinner with scaled prop has been cut out but needs some more for the proper fit.
Noël
Attachments
2017 0078Milan cowl.JPG
2017 0079Milan cowl.JPG
2017 0080Milan cowl.JPG
2017 0081Milan cowl.JPG
2017 0084Milan cowl.JPG
2017 0086Milan cowl.JPG
2017 0088Milan cowl.JPG
2017 0093Milan cowl.JPG
2017 0095Milan cowl.JPG
2017 0098Milan cowl.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 » 22 Oct 2017, 00:59

The canopy has been worked on as well.
The frame was made and the canopy got a rough cut to see how it would fit.
Now the frame needs the hinges and the locking system first.
Later the canopy will be glued to the frame.
BTW my friend lost the canopy of the big K8 1/2.5 scale. This was a perfect fit for it too.
The seat was cut in foam blocks and covered with brown tape. Two layers of 163gr glass fiber was put on with epoxy and one layer of 40 gr.
Cut to shape it is now screwed in so the pilot has the bottom seating ready. The back needs a ply plate that will be secured by two magnets.
And yes, a nice pilot is ready to go...
Noël
Attachments
2017 0028 Milan canopy.JPG
2017 0031Milan canopy.JPG
2017 0032Milan canopy.JPG
2017 0033 Milan canopy.JPG
2017 0034 Milan canopy.JPG
2017 0036 Milan canopy.JPG
2017 0038 Milan canopy.JPG
2017 0040 Milan canopy.JPG
2017 0042 Milan canopy.JPG

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