No, if I ever need to make repairs, galvanizing adds a degree of difficulty (fume hazard) to welding. Haven't decided yet, but will either be powder coated or painted. Leaning towards paint due to being cheaper up front and touching up can be done in-house.Looking really good. Going to galvanise it when it is finished?
Yeah, I know my nomenclature is wrong... Gotta learn the proper names of go-kart parts. The dowels were actual inserted AS kingpins into the spindles. The spindle bracket is the part that gets welded on the frame. It would help if I thought of the 2 legs as the front wheels of a basic go-kart with no suspension. They "turn" independently... no tie rods or pitman arm to worry about. And hopefully no camber or caster.5/8" wood dowels temporarily inserted into the kingpins to keep paint out.
Thank you, Kevin. Nice to have a welder monitoring our progress. I put a lot of faith in the guy who welds for me and so far the frame and legs are really strong. And heavy!Thank you for your detailed review of the motor decisions, and the build process. As a certified welder and hobby metal worker I'm truly enjoying and learning from your progress. Oh yeah, I like rockets too. Thanks
Good question. We typically launch on one end of a private grass airstrip, so I can drop the trailer at the LCO site and move the pad out with my SUV. Makes setup and teardown a breeze. Only issue is we have to have dry weather before a launch. If the runway gets soaked, we cancel HPR and move the launch to our low power backup site. Rutting the runway would put a quick end to our welcome.Where are you going to put the ATV that tows the launcher across the field?
FIFY...Now that I have the truss in place, I can finish the up-lock bracket. This is a piece of 3" x 3" angle steel, one side ripped to 2 1/2" for clearance issues. Eight holes drilled to fit four stainless U-bolts, themselves sized to fit precisely around the Global truss uprights. (Excess length of U-bolt threads to be cut off after final assembly). With the truss swung down to vertical, the bracket fits between a cross member of the frame and the longitudinal "spine" of the frame (which holds the tow bar when needed). Pretty much all I have left to do is drill some holes... two in the bracket for the drop pins that hold it vertical, and two in the frame to hole the legs in their "open" position. And then finish the blast deflector and attach the 12' x 1515 rail to the truss. And paint. Maybe by mini MWP?
View attachment 447042View attachment 447043View attachment 447045