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Re: Jilles Smits 1/3 scale SG38

Posted: 28 Nov 2018, 11:01
by Cliff Evans
Pilot has arrived from Wilson and been delivered to Peter. I feel sure that photos will follow! I must say that the pilot is excellent quality and very fitting for this project.

Still looking forward to Wilsons budget range though!

Re: Jilles Smits 1/3 scale SG38

Posted: 12 Dec 2018, 15:55
by SOTIRIS
Great,job!!! We are looking forward for the progress.

Re: Jilles Smits 1/3 scale SG38

Posted: 13 Dec 2018, 12:30
by Peter Balcombe
I had forgotten that I hadn't updated the thread for a while!
The 1st wing structure is now more or less complete & awaiting aileron horns & bracketry before the 0.4mm ply skins are put on.
The 1st wing aileron is nearly complete, just needing the LE to be shaped.

Also, I have put together the 2nd wing structure over the past couple of days, including the aileron.
Still a lot of finishing work to do yet, but I now have all of the major structures complete :)

In the meantime, Wilson has delivered a 1/3 scale old timer pilot to Cliff, so I had better get on with the seat and the metalwork ;)

Re: Jilles Smits 1/3 scale SG38

Posted: 14 Dec 2018, 07:36
by SOTIRIS
Bravo, Peter! What kind of wood did you use to wings?

Re: Jilles Smits 1/3 scale SG38

Posted: 14 Dec 2018, 07:42
by SOTIRIS
What's the best choice of wood for spars?

Re: Jilles Smits 1/3 scale SG38

Posted: 14 Dec 2018, 14:38
by Peter Balcombe
Sotiris,
At 1/3 scale all of the strip wood, including the spars is Spruce (as available from UK model shops).
Some strip lengths have to be made by splicing two standard lengths together (I use a 50mm long splice with epoxy glue).

Re: Jilles Smits 1/3 scale SG38

Posted: 14 Dec 2018, 20:52
by SOTIRIS
Thank you Peter! Are the hinges Robart type?
I noticed that, the leading edges of elevator and ailerons are square shaped and the rear spars too.I wonder,how the control movement can be achived with so small gap. Any explanation is useful because the SG38 is my first building attempt.

Re: Jilles Smits 1/3 scale SG38

Posted: 14 Dec 2018, 21:09
by Peter Balcombe
Sotiris,
Yes, the hinges are all Robart pin hinges.
The first aileron built has its balsa leading edge strip fitted but not yet shaped into a ‘Vee’ to allow up & down movement against the flat wing rear hinging strip. The hinge rotation point is recessed back into the control surface.
The 2nd aileron build has not yet had its balsa leading edge strip fitted, still shows the internal backing strip.
This arrangement is the same on all control surfaces (I.e. flat hinging surface, angled control surface leading edge).

Re: Jilles Smits 1/3 scale SG38

Posted: 15 Dec 2018, 19:47
by SOTIRIS
Peter,
I didn't know,about this configuration.Thank you,really useful!

Re: Jilles Smits 1/3 scale SG38

Posted: 15 Dec 2018, 21:58
by Peter Balcombe
Sotiris,
The attached part of my SG38 plan gives a picture off the hinge area.