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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

Re: SFS 31 Milan

Posted: 16 Oct 2015, 23:12
by Noël Rumers
Hi Dave,
Very nice model indeed!!!

More work was done to the exhaust and it is ready to go now. Took me a while, to go piece by piece, to work on the top exhaust pipes and get those fixed with the engine bottom screws.
I used two wedges to hold the 4 small pipes in place to being able to braze them to the flat tube. Secured this way I was able to work my way bottom up. The second exhaust pot at the bottom was fitted with a tube, elbow and more to end up to the top exhaust pipe.
Worked fine and lucky me, made no mistakes, all fitted perfectly the first time.
The cleaning was in the end the hard bit ;)
Now the carburetor controls will be installed, saying the servos to control the choke and starter.
With that done the gear retract has to be installed next.
From there on the fuselage building can be taken on to the finish.
Noël

BTW I misted the fly-by of the Vulcan last weekend, but who was at the controls you think...
High ladder to get at the controls 8-)
Or was it a dream...however...

Re: SFS 31 Milan

Posted: 16 Oct 2015, 23:14
by Noël Rumers
...more exhaust steps...

Re: SFS 31 Milan

Posted: 16 Oct 2015, 23:17
by Noël Rumers
...more fitting...
Note that I did close the flat tube only than when all drilling and cutting was done.
Noël

Re: SFS 31 Milan

Posted: 16 Oct 2015, 23:19
by Noël Rumers
And the finish!!!
looks nice, hope the sound will be as good as it looks!

Noël

Re: SFS 31 Milan

Posted: 17 Oct 2015, 00:42
by Dion Dunn
Very nice craftsmanship Sir! It's almost ashame to cover any of it up.

Re: SFS 31 Milan

Posted: 17 Oct 2015, 03:28
by Hobby Jackson
Very cool, this is an airplane I would build! Where would I find a kit for this or did you make everything your self?
Thanks,
Hobby

Re: SFS 31 Milan

Posted: 17 Oct 2015, 03:59
by RPoole
Peter, builder of the 1/4 Milan, Bob, answering your questions.

In the picture, the plane weighed approx. 12 lbs. It was powered by an AXI 4120 14 turn 5s with 14X10 prop. With the new full feathering hub, it weighs approx. 13 lbs. and has a Chinese 400 KV running at 1400 watts with a 15X12 prop. It has steerable tail wheel as well as scale main retract. Dave chose the airfoils and it has Quabeck 3.5% camber with 14% thickness on the inboard section and the outboard tapers to 10% with 1 deg. WO. Sink rate is good but flys fairly fast which isn't a problem if one needs to move 1/4 mile to a new thermal. Has a long roll out. The wing is 1/16" balsa over a spared foam core. Hope this is helpful. Bob

Re: SFS 31 Milan

Posted: 17 Oct 2015, 08:24
by Peter Balcombe
Many thanks for that information Bob.
Noel is in the final stages of checking out a new design for a 1/3 scale Milan (IC powered) and I will be making a 1/4 scale electric powered model from the same design (rescaled) so wondered what a suitable electric setup would be.
The similar, but shorter wingspan RF4, from the Mick Reeves stable has a recommended electric setup of a 3548 900kv motor on 4S I think which appeared a little underpowered I thought - intended for a 40-60 IC engine.
Peter