Today I decided I was going to tackle this problem.
My first thought was that the pucks that hold the box onto the rack were wearing out. I had a pretty simple answer for this problem, sand down the base of the puck so the puck tab exerts more pressure against the rack.
I first measured the thickness between the old one and a new one.
I learned that the old one is .01 thicker than the new one.So that obviously isn't the problem and left me back at figuring it out. I text my new found information off to Isaiah to let him know and he reply's back that he bought some Gorilla tape and was going to put it on the back of his boxes to see if that makes the difference.
I grabbed a roll of generic silver duct tape and applied it to my rack to give this a try.
I put the box back on and it was solid, like brand new solid. The tape took up enough room to lock the box on tight.
Off to the store I went to get some real tape that will hopefully hold up for a while.
It took me forever to find the Gorilla tape at the store and while I was looking I came across this stuff.
I think it would work really well and it isn't a sand texture but more of a hard rubber. The store I was at only sold it by the foot and I wasn't sure how much I needed so I left it be and went with the Gorilla tape.
When I got back home I pulled a box off and you can see where the paint is wore off of it. Being that it is a powder coat on the box and rack, which is a very thick, wearing off I can see why the boxes are coming loose.
I washed the box up with some glass cleaner.
Grabbed the Gorilla tape
And applied it around the box like so.
I put the box back on the bike, the conclusion? The tightest box I've had in over a year. I can't get it to budge at all with the tape on there. Will it hold up? I will find out in the future, hopefully the near future.
I've had a pretty boring day today as it is raining outside and I have been just bumming around the house so I actually made a whole instructional video of how to apply tape to a pannier... yes, I realized how stupid it is to have a entire 10 minute video dedicated to applying tape to a box. That is why the entire video isn't on here, but I thought I'd at least give you a taste of what you are missing in a video all about applying tape.