My major obsticle right now is simply connecting a turbomolucular pump to the chamber!
My current TMpump (which uses an ASA flange) can only run standing up (or the oil from the reservoir would drain into the turbine). So before we even think about attaching it, we need a huge elbo, which turns out costs $595 (3X the cost of the pump). On top of that you would still need an adapter flange (rubber gasket to conflat). AND I would need to elevate the chamber to accommodate the position of the pump. Also, I think the elbo would reduce the TMpumps effectiveness; you want as short and direct a duct as possible (although I have no idea the actual metric of reduction). So not looking good.
Now, lets take a closer look at the TMpumps with variable orientation in my price range on ebay :
Kyky - can’t find any documentation
Lebold - Leybold TW 700 L – TDL SPECSHEET. I don’t see a TW 700, but I do see a TW 701. It’s inlet flange is ISO160-K. So this would need an adapter flange to connect to our conflat(10″ I think). Need to price this adapter.
Any one of these needs an accompanying controller. We are going to try a cheap variable frequency drive on the current TMpump. Do these pumps require extra air/water cooling systems?