I don't know for sure; but I think the major differences between the Hyperspace and the Spacedeck are the bearing and the platter. I own the earlier version of the Hyperspace with the "thinner" platter. The current version sports a much thicker platter. Many people are of the opinion that the original version sounds better. I run mine with Bob Benn's brass "Outsider" and "Insider" record weights which add quite a bit of mass to my smaller platter. Personally, I wouldn't want the current version with the "heavy" platter. The motor has enough trouble spinnig it alone; I don't know how it would do with the added mass of my record weights. If what you are considering is the original version, buy it; ditch the plinth and replace it with a custom Neuance shelf, buy the record weights and replace the oil in the bearing well with Tom's new formulation. In the future you could consider buying a PS like the Nott. Wave Mechanic.
Question for nottingham hyperspace owners
I found a used hyperspace for sale but I'm questioning a few things. The tag on the bottom of the motor shows serial number of aprox 050xxxx and model name says spacedeck. From looking at pictures of all models the motor looks exactly like a hyperspace motor but wondering if the fact that it says spacedeck means anything. Also can anyone tell me if newly built hyperspace is different from earlier units.. thanks..