|Test fit of the tailcone assembly prior to priming|
|Test fit of the step brackets. The test fit identified a few edges that needed to be trimmed |
back to allow for proper fit, as well as some holes that needed match-drilling.
|All the various channels for the front seat backrest (Bag 38). |
Photo helped identify the channels during actual assembly.
|Primed fuselage components - a lot of different channels|
The fuselage build begins with the rear cone.The Sling 4 fuselage instructions are not quite as mature as those for the wing and empennage, so ensure you look at the more mature Sling 2 fuselage instructions as well - not everything is the same between the Sling 2 and 4, but reviewing the Sling 2 instructions will provide a little extra guidance. First component riveted is the tailcone assembly. I riveted the fuselage ribs at the same time using the provided jig. The longerons were then clecoed to the tailcone bottom skin. Riveting the longerons was one of the areas that the current instructions are wrong. The instructions for the Sling 4 indicate that all the longerons are to be riveted to the bottom skin, whereas the Sling 2 instructions correctly indicate that the outer longeron should not be riveted at this time since the lower side skin overlaps it for final riveting. I had to drill out a number of rivets due to this mistake in the instructions. The instructions also call out for the tie-down ring to be installed on longeron 8 before attaching the rear fuselage assembly - however, I was unable to do it in this order, so I drilled out the longeron 8 rivets and attached the tie-down ring after attaching the rear assembly to longeron 8.
|Installing nutplates on tailcone rib 9.|
|Tailcone ribs 7, 8 and 9 riveted.|
|Riveting fuselage ribs using the supplied jig.|
|Riveted fuselage ribs all lined up.|
|Longerons clecoed to the tailcone bottom skin|
|Longerons riveted to the tailcone bottom skin. Note that the outer logeron rivets needed|
to be drilled out as those holes are also used for attaching the side skins
|Clecoing on the tailcone ribs|
|Clecoing on the lower side skins of the tailcone.|
|Installing the right step bracket.|
|Front of the tailcone looking towards the rear.|
|Riveting the tailcone skins.|