Ralph, this is why people don't like you. You really need to get over yourself. You didn't invent rotary valves. You were probably the first person to implement them for bbq'ing, but you certainly didn't invent them. You own no rights to their use just as Bryan didn't invent the PID controller and would never claim such a preposterous thing. When I originally posted my offset rotary I cited your original rotodamper as it's inspiration, but to say that it is a knock off of it insults me because I find the "Rotodamper" has morphed into a disastrous mess of push fit plastic that is sure to leak, and is the reason that I created the offset design so that the air path would be a continuous channel from smoker to valve.A damper is not a required part of a HM build, and there are plenty of designs shared here already, including the "offset rotary" damper that is remarkably similar to my roto damper design.
BTW, I loved reading your history of damper evolution. Did you mention to everyone that until I showed you how to design an interface for servos and valves that you were stuck on that ridiculous setup of propellers attached to paper clips? Of course not. You would never admit that someone helped you in any way. Also, I'm sure that your RD3 "search for a fan that had similar specs as the original HM fan but with a smaller form factor" was real tough since it's the one that I designed the offset and inline rotary dampers around and had been linked in the first post of my thread for almost 2 years. You've made important contributions to this community, but your view of yourself is way distorted and I have very little stomach left for the nonsense you post around here.