I recently finished the construction phase of a titanium Fat Bike. Here are a few shots of the process.
As per usual I stared with a BikeCAD drawing. I like it a lot, it can be tricky to model the bends and the rear triangle. Off to the races!
Here is the rear triangle in the jig. I often start this way unless I’m also building a fork for the bike. The siding PMW dropouts and the amazing 5 inch yoke are installed. I love the shape this makes.
Boom dropped in the down tube. I just don’t have good pics for the bending process. Part of the problem of being a one man operation in not have somebody to take you picture
Now with a top tube. At this point the frame got tacked and then welded. I like to point out the the “braze ons” where installed first/
Seat stay are an important feature. Here you can see an s-bend made with Anvil’s Bender. In the end I did a triple bend on these to make room for the disc break rotor.
Here it is all welded up! I think it turned out well.
Added a seat stay bridge for some more stiffness.
Plenty of clearance in there and it all sits even.
Last but not least a bit of #weldporn.
I’m working on the finish of the bike, stay tuned! See them all at NAHBS!