|Design and Re-Design|
There was a very good discussion on the design of a turbine in a thread on the Railroad-Line forum back in 2011. You can find it here – The Caddo Creek Dam – I may repeat .. probably will repeat some of it as it becomes applicable.
Russell Green of “New England Brownstone” was a major contributor to the discussion – a lot of follows comes from him – modified as needed for a model.
|Problems with Ver I|
The original design of a turbine as seen in the drawing above was cobbled together from books, photos and discussions on the RRL and TWP forums. This is all well and good and I think that the design ‘looks good’ on paper (or a computer screen) but has flaws when trying to model. A one-off model isn’t the problem .. but I was wanting to 3D print some of the parts with the intention of selling a small kit. That leads to a re-design. I’m going to talk about the problems as I see them and the ‘fix’.
That got me to try and think ‘outside the box’. If FUD can’t reliably print rivet heads this size – then what else? That led to “why even print the casing at all? If instead of the casing sliding and riveting over the ends – I could instead have the casing slide inside the ends. I could then move the rivets/bolts to those end caps.