So I stepped back into the ring for round #2. My first go at the FJR1300 cruise control vacuum canister finished me off with some learned lessons. This time I took what was previously served up and planned on applying it towards total domination upon the canister creation.
For those who have no idea what I am talking about I had previously built an aluminum vacuum reservoir which had presented me with some challenges. The main one being getting all my welds to seal. On my second go I made some modifications mainly to the aluminum pre-weld prep.
I started off with a 4” length by .125” wall 6061 tubing and then sliced up a couple of solid 2” round bar chunks to be used as the canister ends. I machined a step into the ends, like I did on the previous canister, however this time I cut in a fairly deep and wide groove to allow for me to flow some aluminum filler into.
So with the canister prepped, the TIG dialed in, and the challenge accepted I laid down a couple of beads on both ends. Tossed the unit back onto the lathe and machined down the welds. Got a bucket of water and a hose filled with 120 psi of shop air I showed no mercy on the canister as I cranked the pressure into it. Ok…what’s wrong, where are the bubbles? Huh? Hmmm….I guess I can be learned. Looks like overcoming my fear of large weld grooves paid off. The aluminum filler flowed in great and I’ve got a submerged canister with contained pressure to prove it. First run of the welds sealed the unit up 100%. Now what? I had budgeted for issues.
So with success obtained early on I spent the rest of my time prettying the thing up. The ends got chamfered slightly and the whole unit was then polished to a shine. Sweet! Much more satisfying then my first go around. Since the canister is not required for install for a few months yet I opted to hang onto it and set it in front of my computer monitor so that I can stare longingly at it. Some day the two of us will have to part ways but until then I want to make every moment count.