I remade the video, they are not as loud or as clear toned as they were before the stuff was welded to them ,but it does give you an idea:
Did quite a bit of work today, including a lot of math and figuring dimensions out.
Started by cutting a bottom bracket in half and welding the halves into the uncut steam pipe adaptors:
Then extended two bottom bracket axles, one by 95mm, the other by 110mm:
All welded up:
Then I had to work out how far the bottom brackets needed to extend into the propane tank piece, here is where many mock-up's and the math was involved because the freewheels are offset due to the brake discs, which moves the axles closer to one side than the other:
Worked out that on the left side, the bottom bracket needed to protrude into the tank by 20mm, so I placed a stack of steel under the hole and measured until it was right:
Tacked on top, then welded on the inside (Still smoking in the pic):
Repeat the process for the other side, but this time it needed to go in 35mm, same story, here it is finished:
Then cut the excess bottom bracket sleeves from the outside and tacked the two cut down steam pipe adaptors over the holes in the tank halves:
Assembled the axles in the holes to measure how much pipe was needed to fill the gap:
Both sides came to 15mm, I was very happy at this moment, because them being the same meant my math was correct!
By the way, have you worked it out yet?
Cut two pieces of pipe at 15mm, pulled the axles back out and removed the bearing cups from the bottom brackets, then bolted the tank halves back together and slid a piece of 1" tube through to ensure everything was perfectly straight:
Tacked every joint:
Fully welded:
Here is a last photo showing the parts all together in case you are still struggling to work it out:
That was a big day's work! Pretty sure I will be taking it easy tomorrow, but I may assemble the whole contraption with the wheels and all and snap some pics, because all this has been in my head for months and I just want to see it all together!
Luke.