I am not convinced SST rivets are the way to go because of the large amount of force needed to pop the rivet mandrel. You may end up squeezing and cracking the cover plastic. Are the stock rivets SST? It seems to me that 3/16" aluminum rivets would be strong enough.... my $.02...
Garauld is right. Looks like the stainless steel rivets are too much for the plastic.
Being the good friend and all that I am... I went out to the garage and proceeded to tear apart one of my working perfectly side bags. (Actually, it has a scratch that I was considering repainting, but don't tell Heidi that!).
The Yamaha rivets are metric, no surprise there! They are 4.0 mm aluminum.
1/8" rivets are way too small, 3/16" are way too big. If you want to use an easily available 3/16" aluminum rivet, then you must:
A. Drill out the existing rivets using a 9/64" drill bit (closest fractional size).
B. Use a large flat screwdriver or similar object to fish out the inner metal reinforcing plate. Note - It is stuck to the inside of the panel with a pretty darn good doublestick tape.
C. Drill all three surfaces (hinge, metal inner plate, sidebag plastic lid) with a 3/16" bit. Drill each of the three separately. I would not recommend trying to drill the plastic and the inner plate in place. You really need to clean out all the debris from the old rivets and get new, accurately sized holes.
I'm going to replace my experimentally screwed-up hinge rivets with 3/16" aluminums. It would take my Yamaha dealer six months to get metric rivets and all the auto parts stores I called said "Huh, metric wrenches???".
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