20 foot Samson open gear finally up
Posted: Wed Mar 18, 2020 9:21 am
Well, after a long and hard build the 20' Samson is finally up at the museum.
Lots of lessons learned in the process. For example, every single blade had 2 to 7 stress cracks that had to be drilled and welded up. The sheet thickness varied by almost 40% so we initially ground off the galvanizing but found that thinned the already thin sheets too much, making burn-through during welding all too common. What we ended up doing is stripping the zinc around the cracks with muriatic acid on both sides of the sheet and that made welding go a LOT easier.
Anyway..a photo. Man-door gives a bit of size reference. Tower is about 13 feet tall. We've got to put in some sort of guarding so people don't whack their heads on the blades but wanted the unit low enough for people to be able to actually see it. Pondering a railing or similar for that.
We thought the tail was huge...but now that the blades are in place, it looks tiny.
Lots of lessons learned in the process. For example, every single blade had 2 to 7 stress cracks that had to be drilled and welded up. The sheet thickness varied by almost 40% so we initially ground off the galvanizing but found that thinned the already thin sheets too much, making burn-through during welding all too common. What we ended up doing is stripping the zinc around the cracks with muriatic acid on both sides of the sheet and that made welding go a LOT easier.
Anyway..a photo. Man-door gives a bit of size reference. Tower is about 13 feet tall. We've got to put in some sort of guarding so people don't whack their heads on the blades but wanted the unit low enough for people to be able to actually see it. Pondering a railing or similar for that.
We thought the tail was huge...but now that the blades are in place, it looks tiny.