Well ( drum roll please ) I snagged a morning today to run my ORV with the Black Black can, then the newer Silver Black can on 2s.
Now take the results as you will as the Black Black can has been used a few times mainly in my Blitzer compared to the Silver Black which is fresh out the box bar 15/20 minutes bench run from a single AA battery before installing it in the chassis.
Black Black first up...
Maximum 39 Km/r
Maximum 46Km/h 😁👍🏻...
So there we have it. I my case the Silver Black is a bit faster over the Black Black.
There is mention of the ‘RS540 used as a base, with turns & timing tuned for more efficiency, power with minimal battery drain’ on the side of the box.
I’m not going to argue with that, I’m more than happy with it’s performance 👍🏻