For full disclosure I will mention that my rack has been welded by someone who knows what they are doing as my chicken scratch welding would have created great mirth (I certainly wouldn't have posted a pic on the forum - always risky


)
When I made the rack, I cut and shaped the pieces to attach to an old grab rail and took it as a box of lego to a mate who runs a rural machinery business, showed him how it all fits together and he welded it for me.
(He is also a keen motorbicyclist - his latest project was building a WLA Harley with sidecar, all from parts - beautifully made).
I also cut templates for the bracing which include a gusset in the elbow of the grab rail down tube and plates either side of the rear fixing bracket. My mate agreed with the bracing but suggested the fixing point ones could be better by making them a bit bigger which enabled the side tabs to be folded up and welded both horizontally and vertically along the rail and the mounting tab.
Rack is very strong and my mates verdict was "It won't break"
I know a rack is only as good as its next trip (Confucious?) but I have used it previously fully loaded on a couple of rides, one a bit over 4,000kms, the other 2,000+. Both trips had sections of rough road and a bit of dirt but admit no major corrugations which would really test things and I only usually carry bulky items like a swag back there.
I believe it is fit for purpose and happy to have kept it minimalist

I had not bothered much with the rack in recent years as I hadn't been taking this bike on longer rides, however I may well attach (perhaps as bolt on) a length of steel to the passenger footrest which would act as an additional support frame for the soft panniers I use.
At present I only bolt on a a bit of flat steel which runs down the outside of the rear shocks - an idea I think I stole from one of Cams posts on here............