Skyranger Nynja, Build Manual

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Nynja Build Manual 1.4d
10.2 Firewall and scuttle moulding
Next steps are to position the firewall and scuttle moulding before assembling the
forward cowling pieces.
Fig 187 Firewall components, and installed firewall (engine removed for clarity)
a) Fit the firewall halves in position behind the engine. Attach the two halves
using cleco’s / skinpins for initially fitting.
The holes in the firewall are supplied
pilot drilled and will need opening up to 4mm. Do this before fitting as access
to drill behind the engine might be difficult.
b) Firewall should fit in position as shown below. Firewall should sit behind the
reference bolt shown and top edge should be 95mm above its centre. Attach
the small rubber edging to the edges of the cut outs where it sits in close
proximity to the fuselage frame. If necessary file the cut outs to give space for
this so position is maintained. Fix into position using the small angle brackets
using 4mm steel rivets with 4mm washers on the back side. If the heater
option is to be fitted it may be easier to cut the hole for it and trial fit before
fixing the firewall.
Figure 188 position and fixing of firewall to engine mount
95mm