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SFS 31 Milan

Fans and Thermals.
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Noël Rumers
Posts: 220
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers »

Thanks to all of you for the nice words! I know that you all are very fine builders, and that is the most important thing.
And yes, I am back and I will post more again.
I do hope that all of you keep safe and stay away from that BUG! :(
All the best and more later,
Noël
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Noël Rumers
Posts: 220
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers »

:oops: :?
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Noël Rumers
Posts: 220
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers »

...Hi...
I am back...
Since last time and with good intentions...but the impossible always happens, or Murphy...
But a lot happened since than on my modeling.
We are still no were with that Bug, so as you are, we are as well in a self organize lock down, or better, in a building lock down!
Looks nicer and one can enjoy it much more...
So, a not to short review on the Milan 2 actually.
Milan 1 flies and it has the ZG38 with Fema starter on it.
For Milan 2, I had the old Tartan 44 ready and it fitted in perfectly. But, yes there is always a 3th option.
This came to my mind not that long ago. However this looked a good idea so I went fully for this option.
I did have the motor, bought for another project that I had cancelled. So the ESC was there as well, so why not give it a try.
The parts supplied by the motor were however not fitting the prop, so new parts had to be made.
The prop had to be the Biela scaled prop, a 20 x 10 " prop that I also used on the Milan 1.
So, that said, I designed a few new parts to fit that motor and looked for the materials to start machining...
The new cross had to be made, because the one that came with the motor didn't fit at all.
Than the new propeller shaft was made. The new back plate for the spinner with 10 scaled holes instead of the 2 original once.
A new washer was made as well with the 4 distance pieces to mount the motor to the firewall of the fuselage.
The back plate was fixed to the propeller shaft as well. All was top, lucky thing is that Murphy is somewhere in lock down too ;-)
Noël
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Noël Rumers
Posts: 220
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers »

...with all the new parts ready, the assembly could start.
The spinner fitting was first done so all of the assembly would be a piece of cake. And it was.
The holes in the firewall had to be drilled to fit the new parts to hold the motor.
The fit of the cowl, previously done for the Tartan, was perfect for the new electric setup as well!
All well so far!
Noël
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Noël Rumers
Posts: 220
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers »

... The next thing to do was building the ESC on. That was not too bad.
The motor was a difficult one. Never found any info on the prop sizes...
But still it was big and capable of 6 S to 10 S Lipo bats.
The only thing to know what I had screwed to my fuselage was test run the motor and measure what was happening pushing the throttle.
So I did last Sunday, freezing cold but I had to know!
The read out was what I had hoped for!

With 8 S batteries, the motor ran 5400 rpm, pulling only 44 Amps with 1250 W.
No vibration at all and I had to hold the fuselage firmly on full throttle!
I could or can go to 9 S or 10 S but that would be an overkill.
The next thing to do is measure the ZG38, how much rpm that one turns!
I believe it will be a bit more but not much. I think I measured an another model some time ago and I have a figure of about 5800 rpm in mind...With the same prop…
Time will tell. But once flying I have to throttle back anyway...
This will be set for now...
Noël
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Ian Davis
Posts: 162
Joined: 18 Mar 2015, 12:33
Location: Bishopstoke UK

Re: SFS 31 Milan

Post by Ian Davis »

Hi Noel

Glad to see you are back. Wonderful work as usual.

Best regards

Ian ;)
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VinceC
Site Admin
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Joined: 22 Feb 2015, 11:45
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Re: SFS 31 Milan

Post by VinceC »

Hoorah ! Noel is back. In your absence there is a new plan shortly available for the Blanik Motor Glider.
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RobbieB
Posts: 547
Joined: 07 Mar 2015, 22:22
Location: North West

Re: SFS 31 Milan

Post by RobbieB »

Great stuff as always Noel.
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Noël Rumers
Posts: 220
Joined: 20 Mar 2015, 10:29
Location: Hoboken Antwerp

Re: SFS 31 Milan

Post by Noël Rumers »

Hallo to you all, and yes, thanks for still wanting me! I'm happy to be back too.
Hi Vince, what do you mean by a Blanik motor glider?
The Blanik with the motor on top of the fuselage or the Vivat, where the motor is mounted up front and sits under a cowling?
This last one is still somewhere on my to do list and not that far away...I worked on it last year a bit…It was in the air I believe.
First however finishing what is in the way to take on a project like the Vivat e.g. Drawings I have ready to go...scale 1/2.75.

But first the Milan 2 now. The electric motor is on thing that is ready so far, but the exhaust pipes, two on each side of the fuselage had to be made too. I didn't want to cut them of the Tartan engine, so ne tubes were cut and drilled. A small steel plate was drilled to so the silver brazing did the rest. The only thing they nead now is a bit of exhaust paint. But first the cold weather has to go now.
The fit was again perfect due to the guide bloks that I used on the Milan 1 to set the exhaust pipes.
More to come...
Noël
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Cliff Evans
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Joined: 29 Dec 2019, 15:13
Location: Bristol
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Re: SFS 31 Milan

Post by Cliff Evans »

Jilles has produce a great plan for the L13 Blanik, seeing as the Vivat used the same wings and tailplane, it made sence to do the Vivat fuss as well!
https://lasercutsailplanes.co.uk
https://patteaklegliders.co.uk
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