The physics makes sense and I myself just bought the vacuum pump. It should be here later this week so if you want to wait till then I can give you a review on it. I have also seen people use their shop vac to aid in degassing the wine but I don't think that is too sanitary.
Along with taking forever, I am not sure how much suction those wine savers get. I got a mitivac. I leave it on for a few hours. Giving it a few pumps every 10 - 15 minutes to keep it where I want it.
mightyvac or why not just get a cheap HVAC vacuum pump and rig up a 1/4 flare or 1/2 ACME adaptor to a rubber stopper. Could be put together for less than $100 and it would be lightning fast!
I also use a mityvac hand pump. I use it quite a bit in the beginning, then I let time work out the rest. I usually have one more go at it right before bottling too.
mightyvac or why not just get a cheap HVAC vacuum pump and rig up a 1/4 flare or 1/2 ACME adaptor to a rubber stopper. Could be put together for less than $100 and it would be lightning fast!