Re: Bench vice
On this side of the pond, the blue item in the background stamped No5 in pics 1 and 2 is what we call a bench vise.
Not sure what the right term for what you built is, but clamps like that are useful. https://www.trick-tools.com/BuildPro...ch_T51510_4212
is the same concept but they don't give it a name beyond "360 clamp"
A steering damper dampens steering oscillations. If it starts to leak, it may become a steering dampener. There's no such thing as a dampner.
Bikes: naked SV1000 with all the possible bling, WR450SM street legal, 450XCF SM trackbike