I have 2 Q2b’s. One seems to wind up much faster and peak out a lot quicker then the other. Is this a design difference? Or is my motor worn out? My old Q takes more then 6 seconds to peak out. My newer one is around 3. Thoughts or suggestions?
I don't know if it is old vs new sirens, but I noticed that Q sirens on antique fire engines don't get as high-pitched as those on modern fire engines. Maybe that has something to do with the electrical system on the older trucks.
I know there are also changes in the number of holes (well rectangles)(9 and 14 are coming to mind but that is a vague memory so don’t quote me on that) in the stator also. I would assume that changed the pitch also.
Really no help here, but I remember hearing that the old clutch would allow the siren to roll out until nature took over, some 5 minutes long until it completely stopped.
Maybe there is a field test in there somewhere.