Summary

here are the parts necessary to create a flying model of the falcon Heavy in approximately 1/100 scale. I say approximately because I substituted bt55 for the main bodies since a more appropriate size was not available. You will have to figure out for yourself how to make this fly, ie where to place a launch lug, What to do about fins. what size motor to use , i recommend 24MM . Recommended for advanced builders skill level 5 and up.

Body Tube sizes
3x BT55 397 or 15-11/16"
BT 55 160mm or 6-5/16"
ST20 70mm or 2-3/4"

Please take the time and check out my other model rocket things.
https://www.thingiverse.com/thing:2845691
https://www.thingiverse.com/thing:2847499
https://www.thingiverse.com/thing:2854187
https://www.thingiverse.com/thing:2854204
https://www.thingiverse.com/thing:2854660
https://www.thingiverse.com/thing:2856923
https://www.thingiverse.com/thing:2859568
https://www.thingiverse.com/thing:2872159
https://www.thingiverse.com/thing:2876174
https://www.thingiverse.com/thing:2881947
https://www.thingiverse.com/thing:2941984
https://www.thingiverse.com/thing:2944705
https://www.thingiverse.com/thing:2958861
https://www.thingiverse.com/thing:2961972
https://www.thingiverse.com/thing:2978513
https://www.thingiverse.com/thing:2985524
https://www.thingiverse.com/thing:3015692
https://www.thingiverse.com/thing:3015754
https://www.thingiverse.com/thing:3034844
https://www.thingiverse.com/thing:3035892
https://www.thingiverse.com/thing:3188333
https://www.thingiverse.com/thing:3188567
https://www.thingiverse.com/thing:3192548