Grumman AA-1B Build

MICKEYDSC71

New member
Making progress on the plane from my youth ... my Dad would fly one of these on the weekends. Mine will have a 40" wingspan. I've fabbed the engine mount and firewall assembly over the weekend, and have it dry fitted to the fuselage. Tail section almost done - also dry fitted here. The spar assembly (drilled out 1/16" aluminum) is also built but not shown or installed yet. Moving next to the gear ... once that's ready I can install some of these completed parts.
 

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rockyboy

Skill Collector
Mentor
Looking good!

Are you working from plans or just the TLAR (that looks about right) method?
 

MICKEYDSC71

New member
Looking good!

Are you working from plans or just the TLAR (that looks about right) method?
I have a line drawing of the plane I pulled from somewhere online, and using known measurements of the real plane, a cheap Amazon micrometer, and a simple ratio equation, I'm working up the measurements from the line drawing and building accordingly. I used the same technique to build a chuck glider from a Waco CG-4A line drawing, and it worked very well. But I suppose I'm still using TLAR to double-check my progress :)