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Re: SFS 31 Milan

Posted: 04 Oct 2015, 22:52
by Noël Rumers
More work was done to get the engine to the firewall and prepare for the exhaust.
This is always a bit fiddling with the space and the parts.
All must fit under the exhaust box and cowl...
However the exhaust flange was connected to the engine and the elbow installed with the first half of the exhaust pot.
If you see the partly finished exhaust off the engine, all looks really mess up!!
But due to side trust, engine angle etc, all works out fine once screwed to the engine while on the firewall.
I use a fine felt-tip pen to mark the position before brazing things together.
Now I have to decide to go for the scaled exhaust on both sides or just fake once with a tube going out downwards...
I sleep over this problem tonight... ;)
Noël

Re: SFS 31 Milan

Posted: 04 Oct 2015, 22:58
by Noël Rumers
...and more...
I use the fiber glass reinforced brush on the drilling machine, it is safer than the metal ones.
No pins fly out while grinding the brazing etc...
Noël

Re: SFS 31 Milan

Posted: 06 Oct 2015, 13:39
by Noël Rumers
We decided to build a removable front hatch. This way one can get to the servos up front to control the engine and starter as well as access to the fuel tank and possibly the batteries.
These formers had to be designed and made.
A quick fit shows the size of the space underneath this hatch. I know now to the fuel tank will fit easy underneath it as well.
Two kind of fuel tanks are shown to be able to taken the best fit, but both are OK.
For the exhaust, the night has given me a thought, like always if you get to the point of counting sheep...
See what I found that could be used. Need more 10x.0.5 mm steel tube now,

Noël

Re: SFS 31 Milan

Posted: 09 Oct 2015, 22:00
by Noël Rumers
Hi, yes I am still working on the exhaust.
A few things had to be sorted in my cellar too.
Now I have a nice table to work from...
The exhaust...
I went for a scaled working exhaust seen a few years ago on this site.
The flat tube I have is something they use in wardrobes to hang your coat hangers onto.
Very useful and not too strong. I made some V-cuts to bend it and brazed it back together.
In the end I also made the exhaust tube holder separately.
This way the tube could be clamped in the milling machine to drill the two holes for the small tubes with holes in.
Some calculation was done to see how much exhaust surface I had in different places in the complete exhaust.
The drilling of the holes in the tubes were tested first. Hand drilling showed me that no one hole was in line...so a no go this way.
The milling machine made this easy, just counting the 3.5 mm for each next hole, 16 of them.
Now the link between the oil filter second pot and the flat tube must be made.
See the result so far.
Noël

Re: SFS 31 Milan

Posted: 09 Oct 2015, 22:06
by Noël Rumers
...and more...

Re: SFS 31 Milan

Posted: 15 Oct 2015, 09:44
by Noël Rumers
Hi Rossco,
it's the workshop...
He has a different one. The way I am doing this is less complicated for me ;) .
The film however is looking great!!! and all the others behind it too... ;)

Today I will get back to finish my exhaust.
Had a few other things to sort out first...done now!
The rear attachment plate of the K14 landing gear had pushed out the former where it was bolted to.
This was the only thing I didn't reinforce on this gear...now taken care off too.
Next was a problem with the ailerons on a bird. They didn't work on the other project, steering to the LH make it turn to the RH and visa versa...
Not good, now spoil flaps are just behind the main spar. Opening up the wing on the top, to be able to get reinforcements in.
Now all controls are fine, even so that with only 1 cm up one side, the bird turns to that side without use of the elevator.
Ailerons are closed up.
Noël

Re: SFS 31 Milan

Posted: 15 Oct 2015, 14:36
by Noël Rumers
...by the way...I did miss the MW event last weekend...
However at our club we had also a smal meeting with guys from two clubs nearby.
See a few pictures.
Noël

Re: SFS 31 Milan

Posted: 16 Oct 2015, 17:06
by Dave Smith
Noel,

Some pictures of a nicely done electric D-KORE built by a friend of mine in British Columbia....

Re: SFS 31 Milan

Posted: 16 Oct 2015, 19:09
by Peter Balcombe
Dave,
Do you know what scale/weight of model & what the power train components are?
I will be building a 1/4 scale Milan very soon, so would be interested in the setup used.
Peter

Re: SFS 31 Milan

Posted: 16 Oct 2015, 22:14
by Dave Smith
Peter, it's 1/4 scale, but I'll have to ask the builder what he's got in it and the weight.

DS