At this point the frame was tested on hills. The brake lever and bicycle computer are mounted on a steel tube with a rubber grip inside the frame rail to avoid snagging the mainsheet. Since my wheelbase is long, a rod is used with ball joint ends to connect the fork and tiller. Keeping my feet together and away from the front wheel has worked well, and the ball joints are tight and strong. 3M non-skid tape keeps feet on the tiller, and a welded tab attaches the control rod.
Adjustment is by turning the ball joint on the threads and locking with a jam-nut.
Head tube angle will affect steering response. At an angle of 60 degrees handling is good, but a slightly greater angle might help traction on the tightest turns. This isn't really needed, but it smooths low-speed steering a bit. The control rod attachment at the fork is a piece of welded-on angle stock. Testing with clamped-on brackets will help.