Inquiry (采购产品): standard specs for 3 inch spline assemblies We are building an experimental rotary engine and need to transfer the power from the engine to a 3 inch output shaft. We need the specs for the splines--the tolerances between the inner and outer splines etc. **** Hidden Message ***** Douglas Elgan 83316 Company: American Hydro Energy LLC E-mail: dlelgan@gmail.com **** Hidden Message ***** dlelgan@gmail.com