Jim ,..when I build I weigh every aspect of the build in every stage,..I have moved 4 times since building the 1600R and my documents are lost in the array of mis matched labeled boxes,..but ,..using .035 wall .5 OD CM with .375 bracing ..I think one could lose about 15 lbs in the fuselage alone.
right now my prototype weighs in with gear on,.. at 104 lbs,..the fuselage is 21 foot long without motor ,..I have used 1",.. .5 " and .375 " and .25" CMT to build it to the point it is in,. in the photo and that is 25 hours into it ,.. the cabin area is 48 " wide at the shoulder ,..7 foot deep from rudder pedal to rear of cabin,..I'm using 6061 T-6 spars and I will use birch for the ribs,..if I've done my math right the bare airframe will weigh around 184 lbs,..this is a 3 place aircraft,..
I asm building it as light as possible so I can put the weight where I want it ,..so end product will weigh in less then 700 lbs. with a 700 lb payload
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