As promised in the video, here are some pics to help explain...
I chose to use the American style bottom bracket for simplicity in the looks department...
Started with a BMX bottom bracket with the seat post still attached, tacked it to the frame and checked everything was level and centred:
Added two BMX fork legs cut and hand-notched to suit:
Welded them solid to the bottom bracket:
Cut the tacks holding it to the frame and removed the old seat post:
Welded it back on, using the notched ends, a straight edge along the frame and reference marks on the frame to make sure it was in the correct place:
Thinking about possibly making a filler plate, depends on what I do with the tank... It may even end up covered in padded kangaroo leather...
Started work on the jackshaft drop out on the final drive side, this needs to be fairly strong as the forces are fairly large, I used the curves out of the two chair frames I chopped up for the rear triangle on "Mad Maxine" and some 2"x1" thick wall RHS:
Added front supports using some more chair frame parts:
Note the threaded axle adjuster made from an old racer front axle:
That was it for the day...
Now that I have sat down and had some lunch and can think a bit clearer, I am pretty sure I have a solution for the rear brake that will also simplify things a huge amount, so there should be some good progress on the rest of the drivetrain soon!
Stay tuned!
Luke.
I chose to use the American style bottom bracket for simplicity in the looks department...
Started with a BMX bottom bracket with the seat post still attached, tacked it to the frame and checked everything was level and centred:
Added two BMX fork legs cut and hand-notched to suit:
Welded them solid to the bottom bracket:
Cut the tacks holding it to the frame and removed the old seat post:
Welded it back on, using the notched ends, a straight edge along the frame and reference marks on the frame to make sure it was in the correct place:
Thinking about possibly making a filler plate, depends on what I do with the tank... It may even end up covered in padded kangaroo leather...
Started work on the jackshaft drop out on the final drive side, this needs to be fairly strong as the forces are fairly large, I used the curves out of the two chair frames I chopped up for the rear triangle on "Mad Maxine" and some 2"x1" thick wall RHS:
Added front supports using some more chair frame parts:
Note the threaded axle adjuster made from an old racer front axle:
That was it for the day...
Now that I have sat down and had some lunch and can think a bit clearer, I am pretty sure I have a solution for the rear brake that will also simplify things a huge amount, so there should be some good progress on the rest of the drivetrain soon!
Stay tuned!
Luke.
Great build so far , I am watching
