Bloody gorgeous, John!
Very impressive WIP and a treat to follow. Can't wait to see your G-10 finished!
Anyway, I hope you don't mind my making a few remarks regarding the riveting on the vertical tail:
"As is", the tail on your Erla-built G-10 would be representative for a/c with the all-metal tall tail which was mainly conceived as a drop-in retrofit for existing aircraft. Said retrofit comprised a new extended fin cap and a new rudder. Both the joint between intermediate tail assy and fin cap as well as the overall riveting would be faintly visible.
However, when the G-10 (and soon to be followed by the K-4) started to hit the production lines, the wooden tall tail had already become a "standard" feature of new-built late G-6 and G-14 airframes.
The wooden tall tails were subcontractor manufactured and finished - smooth laminated wood surfaces devoid of any rivets; and being an integral assembly, no joint between "tail body" and fin cap. Both types, metal and wood, were designed to be interchangeable with each other.
Original drop-in metal tall tail retrofit/assembly:
Photographically documented on G-5, G-5/AS, G-6, G-6/AS, G-8 and G-14, G-14/AS aircraft.
Wooden tall tail:
Given the omnipresent no-rule-without-exception mantra, a metal tall tail would be just that exception.
I'm 99.489% sure the wooden tail would be the way to go, hence requiring some filling and sanding.
Maybe one of the other fine gentlemen here will be able to shed some more light on this matter.
Edited by Airfixer, 13 December 2017 - 10:33 AM.