Robert Comsol wrote:
The only difference is that that the Burke 116 chairs have raised "arms," while he 115s don't. You can see the difference between the two types of chairs in this shot from "The Conscicence of the King:"
Is it normal that the back of the "116" tilts further back than the "115"?
Yes, the profile of Burke 116s have them reclining a bit more than Burke 115s. The above shot shows that pretty well, but when you Google images of Burke 115s and 116s and compare then, you can see that they do that even in pre-tricked-out-for-Trek
chairs. The slightly diferent angles on the backs are the reason why the decorative triangles you can get for the chair backs actually have slightly different contours, and you need to specify which model of you want to get the triangles for. The wrong triangles mean lots of sanding and bondo.