Set angle iron fixture on frame as shown make sure that the fixture is against the axle brackets,
clamp to support
Place 2 hole frame bracket against the fixture and clamp so that bracket is at the very end of the
fixture  facing toward the front of bike
Tack weld the bracket onto frame (face only)  
Check alignment before welding permanently in place
Notice notch in caliper bracket it is there for welding clearance.
ONLY WELD IN THE NOTCHED  
AREA ON INSIDE OF THE FRAME .
Make  sure  bracket is flush with the
fixture , in this picture the bracket is
not flush.
Assemble wheel with sprocket, tube,
tire and threaded spacers. Use
spacers as nuts to assemble wheel
assembly completly tighten all spacers
Install rotor onto the spacers and
tighten
Your assembly should look similar to
photo
This is what the brake system looks like when installed properly .
Mount master cylinder as shown
Route brake lines as shown
PLEASE NOTE    it may be necessary to loosen the brake line fit at the caliper to adjust the brake
line as shown. If you do re-bleed the brake system before bike is ridden  
use dot 3 brake fluid
only.
Frame bracket , caliper bracket , 3/4" spacers and
8mmx30mm bolts
Instructions are for the
AZUSA 6" Azusalite 6"
wheel only