There seems to be a big interest in power drawbars for the TTS system. This is a pic of my unit that I have been running for a few weeks. It runs on 75 to 80 PSI and has a drawbar pull of about 4000 lbs.
I designed this system for affordability and relatively low air use. I think most people rather not use over 80 lbs air pressure. It is going to be a less expensive alternative to Tormachs triple cylinder.
Etced