When you applied the tape what did you do to the mount to prep it first? Anything?
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For some time there has been an ongoing issue with the 3M VHB mounting tape not bonding properly, (especially to the plastic mounting plate more than the glass) that was shipping with the SG9665GC. There are at least two threads about the problem
HERE &
HERE and it's been mentioned elsewhere from time to time.
The problem appears to have been an odd supply chain issue and not Street Guardian's fault in any way. As usual,
@Street Guardian USA provided extraordinary customer service and even sent me a third set of replacement tapes just a few weeks ago even though I hadn't even asked for them because he was aware that I've been dealing with the issue and he knew that the last replacement batch was still problematic. In the meantime, I had already used some of my own roll of #5952 VHB tape and it appears to be holding just fine now but the new tapes he sent are visibly quite different (black) than the old stuff (grey) - (genuine #5952 3M VHB tape doesn't come in grey). From all appearances the tape in question was either counterfeit 3M VHB #5952 or not the 3M product it was supposed to be but Street Guardian has apparently got it all straightened out now. As
@Street Guardian USA mentioned above this issue has not been present at all with the new SG9663DC.
To answer your question, because of this issue I was unusually conscientious about prepping the windshield
and the mount before application. I carefully cleaned the glass twice with alcohol as well as the mounting plate. Additionally, I abraded the mounting plate with some sandpaper before applying the tape to enhance adhesion. Finally, I avoided attaching the camera to the mount overnight after installing it to allow the VHB tape to bond fully before applying weight, as recommended by 3M. With the "bad" tape I still experienced adhesion problems after a few weeks.
Anyway, if anyone wants to discuss this further, let's take it up in one of the two VHB tape threads I've linked to rather that continue here with this off topic tangent.