I used sweep 90s in mine which take up the same space as 2 45s and IMO they have smoother curves thus, in my head less resistance
Uncle... isn't it about loss of energy due to deflection i.e. hitting 2 45s would be less than hitting a 90
Jesse, I like the 1" SCWD b/c you can take it apart and clean it out. Apparently my 3/4" SCWD is jammed and only pushing one side (not rotating) I am currently deployed and can't fix it as my wife doesn't really know how to take everything apart.
Also, I had a design error so I only use one of the closed loops at the moment, I plan on fixing all of this on R and R and will then be able to comment on if I like the 1" SCWD better