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Re: Jilles Smits 1/3 scale SG38

Posted: 22 Jan 2019, 21:47
by Peter Balcombe
Stephen,
I will let you know once I have found someone to do it for me ;)
(Probably gas though)

Re: Jilles Smits 1/3 scale SG38

Posted: 27 Jan 2019, 16:26
by Peter Balcombe
Rudder pedal assembly now painted & assembled onto the forward fuselage assembly (bottom box assembly) although a touch-up of paint is needed to complete.
View of securing nuts & tow release pushrod also included.-
Note that the pre-bent tow release rod can be removed whilst the rudder assembly nuts are fitted if required.
The missing section of side skin also needs to be put in place before the two side fixings are put in place.

The 3mm ply rudder pedals and heel support strips are still to be fitted.

Re: Jilles Smits 1/3 scale SG38

Posted: 27 Jan 2019, 21:22
by Peter Balcombe
Stephen,
The results of the silver soldering are shown in the previous post with the assembled rudder pedal assembly.
A gas set with soft flame was expertly used by WMSA clubmate Steve Vincent (many thanks Steve) and it all went very well until the last joint.
I was pleasantly surprised that the soft flame didn’t disturb the work whilst being heated & the liberal coat of borax around the joint kept everything clean until the solder flowed.

Murphy’s umpteenth law decreed that the small brass pieces for the last joint deformed when heated, so had to be remade ;)

Re: Jilles Smits 1/3 scale SG38

Posted: 27 Jan 2019, 21:30
by StephenB
Thanks for the update Peter, I must say it looks an exemplary job - in keeping with the rest of the build.

I think I will need to do some research on methodology prior to training myself up on the "blow torch".

Re: Jilles Smits 1/3 scale SG38

Posted: 31 Jan 2019, 11:43
by Peter Balcombe
Fuselage parts now all joined to make a 6ft long item!
The seat has also been made and the Wilson pilot tried for size.
(Still need to fit rudder pedal plates & heel rests)

Control surface cable sheaves can now be fitted on the fuselage sides, together with battery box, switch and BEC within the wing root area.

Re: Jilles Smits 1/3 scale SG38

Posted: 31 Jan 2019, 12:43
by RobbieB
Looking well Peter, no hiding place or room for error with all that 'air conditioning' :lol:

Re: Jilles Smits 1/3 scale SG38

Posted: 31 Jan 2019, 15:21
by StephenB
Very impressive, the pilot looks fantastic!

Re: Jilles Smits 1/3 scale SG38

Posted: 14 Feb 2019, 14:43
by Peter Balcombe
Work has continued over the last couple of weeks to skin the tail feathers and make a start on the wing skinning.
The pics below show first wing assembly to check that they will plug together, and also to check that the root ribs are parallel.
Also shown are a couple of first overall assembly shots.
Rudder pedals now fitted & only bits left to initially fit are the control wire sheaves below pilot seat and on top tail boom rail.

Re: Jilles Smits 1/3 scale SG38

Posted: 17 Feb 2019, 13:58
by SOTIRIS
Good,job!!!!!!!!!

Re: Jilles Smits 1/3 scale SG38

Posted: 06 Apr 2019, 16:42
by Peter Balcombe
Over the past few weeks I have finished the wing skinning and stained all of the skins and exposed wooden parts.
(Note use Wood stain, rather than Wood Dye as this gives a more uniform colour on both ply & balsa, even when the balsa has been sealed to prevent it fluffing up when wetted with stain).

I decided to apply the Ceconite covering using dope (rather than the manufacturer's recommended adhesive) as I needed to get a uniform print-through of the underlying skinning & cap strips.
Therefore, i first applied a base coat of dope to the parts & then laid down a line of masking tape to define the boundary between the covering and exposed wooden finish.
The Ceconite covering is then laid in position and dope applied to attach it to all skinning/cap strips, rubbing the dope into the weave as necessary with a fingertip to ensure that the stained skins show through everywhere.
(I managed to recover lighter patches on the very first side by gently rubbing these areas with a cloth dipped in cellulose thinners to reflow the dried dope).
The Ceconite is doped over the edge of the masking tape. When dry the covering is trimmed around the edges and then along the masking tape line using a sharp blade. The covering can then be removed from the masking tape and this then carefully removed to leave a clean edge between the covering and stained wood. See photos below.