coastalsyrolover wrote:
The bar down the port has no influence on the tone. I was wondering about that a while back because mine has the split in the middle but it's single tone. I think only the earlier bolts had the wide port... Did we have a different conclusion become uncovered that I missed?[/quote]
No i was not refering to the port dividend on the chopper cap it self as the choppers can be junkyard swapped in many cases on those sirens, i was instructing him to look at the rotor itself through the port on the chopper cap to see if it has the dividend in it to tell if its dual tone or not.
Oh and cincinnati's Tbolts came in single tone 5 port, dual tone 4/5 port and dual tone 5/6 port. I currently own one of each.
Female enthusiast who is the owner of many large and small sirens, misc controls, timers etc. (too many to list in this small space) all big sirens came from cincinnatis old system.