27-02 to 04 Firewall Riveting

We’ve been having a bit of building work done on the house, so I’ve had the enforced distraction of dipping a paint brush in emulsion to do some decorating. This has slowed RV14 progress, but I do something towards the build every day after a dose of DIY!

Anyway, after all the part preparation it’s nice to start putting them all together.

It’s a lot more fun than decorating the house : )


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After anchoring the Tunnel Sides in the vice I used the squeezer to rivet the Cover Angle Brackets.


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Riveting the F-14104 Support Angle to the inboard side of the F-01401E-L Firewall.


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After supporting the Tunnel Sides, the C-Frame did a good job of back riveting the Firewall Angles.


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Here’s a view of a Nose Gear Bracket …


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… and the shop heads on the other side, set by back riveting using the C-Frame for support and alignment.


Stainless Steel Firewalls

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I was expecting the job of deburring the stainless steel firewalls to be character building, but actually it wasn’t too bad.

As usual the inside edges of the form had a small burr, and after filing etc I tried a Dremel Sanding Drum, and this speeded things up.

After this I finished it all off with some 320 grit sandpaper. I can now handle the parts without risk of cuts!

I used my oldest debur bit to remove the small bur around the holes … but it doesn’t seem to have suffered too much.


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The DRDT-2 made quick work of the Firewall dimpling. Care is needed to follow the manual precisely and not dimple the wrong holes!


Back Riveting the Firewall Angles

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I initially tried my steel plate for back riveting, but due to the stiffening dimples in the Firewall Sides it proved too large to get every rivet.

After a bit of head scratching I decided to try my Tungsten Bucking Bar. After propping up the workpiece with wooden blocks, this needed CAREFUL positioning of course.


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But taking things slowly it worked pretty well. As usual I used my long back rivet set … I find it easier to keep a steady angle on the gun during setting.


The 426AD4-7’s in the corner brackets are a smidge too long really, but they set reasonably well … but it’s extra important to keep everything perpendicular during the set I guess.

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