Here's some pix of my Peli case and home made rack:

The rack is made of 20mm x 5mm steel flat and is attached to the indicator bosses and rear grab handles.

(I hope!)

Matt :)

That's excelent- thanks Matt!

Pelican case bracket
 

Dan
Not a stupid question
Below are the details of brackets I used to lock a Pelican 1520 case to standard B&B rack on a DR650 with Giant Loop Great Basin saddlebags.
Check size of pelican case first with thumnails below as there are many sizes.
Give drawings of attached brackets to metal fabricator
I used 3mm galv plate
Cost was $200AUD at Jackson and Jackson Metal Fabrications, Cairns
The pelican case contained an editing laptop, camera, sound equipment and drone gear and enabled me to remove the case when required. The locks ended up being hidden by the upper portion of the saddlebags.

You are free to use drawings for personal use but not manufacture for monetary gain.
If anyone would like additional information or would like to manufacture for sale please contact Mark Buttrose on the email below

Contact markbuttrose@gmail.com