I vaguely remember the first time I played a Voyager, it was an anniversary edition in an analog synth shop. I distinctly remember feeling a weighted keyboard, almost like a piano’s keys.
Do some Voyager actually have a weighted keyboard, or is my memory just crappy?
I guess just crappy… 
What i remember is that Moog gets all their keybeds from Fatar which are not weighted.
Never heard about weighted keys on a Voyager. But technically it might be possible to exchange the keyboard action with a different one. But the needed space for it might be the problem. And the price tag.
Are there any less than 61 note keyboards that actually have weighted keys?
The keys on my Voyager PE are weighted. Not a piano hammer action, but synthesizer weighted action. The little weights are located under the fronts of the white keys. If you put your finger under the key tops, you can feel the weights. If it is hollow under the keys, there are no weights.
I have both an Indigo 2 and Micro Q keyboard, they both have the same Fatar 3 oct keyboard. The Indigo is weighted and the Q is not. Not a big difference, but the non-weighted does have a cheaper plastic-like feel to it.
I thought all Voyagers had that same Fatar synth-weighted action?
Oh well, even though my memory deceives me, it is still nice to imagine playing a voyager with weighted keys. Trippy.