This is the way I addressed the problem on no tie downs on the NT luggage rack.
My primary intent was to carry my camping gear, sleeping bag, tent and air mattress in a small duffel on the luggage rack.
I almost always carry either a small or large tail bag on the passenger seat. The logical place is to mount the duffel on the luggage rack.
I used a 12? piece of 3/16? x 3/4? of aluminum bar stock, two 8 x 40 mm button head bolts, two 5/16? x 1/4? spacers and four 8 mm flat washers, two washers each side to provide just enough clearance between the bar and the rack to slide a nylon strap underneath.
Using a four point point mounting, with two nylon belts, two points under the bar and two points on the tail bag to provides a stable mount.
My primary intent was to carry my camping gear, sleeping bag, tent and air mattress in a small duffel on the luggage rack.
I almost always carry either a small or large tail bag on the passenger seat. The logical place is to mount the duffel on the luggage rack.
I used a 12? piece of 3/16? x 3/4? of aluminum bar stock, two 8 x 40 mm button head bolts, two 5/16? x 1/4? spacers and four 8 mm flat washers, two washers each side to provide just enough clearance between the bar and the rack to slide a nylon strap underneath.
Using a four point point mounting, with two nylon belts, two points under the bar and two points on the tail bag to provides a stable mount.