I’ve recently learned of Sergent’s existence and have been trying to reach the company for more details. Lacking an email reply to the website address I used, I began to look around to see if there was any online info/chatter, and found this website. I’ve been modeling in HO for a number of years, and have now built most of my layout. One items of interest has been a rotary dumper, hence the interest in rotary couplers which is what lead me to Sergent and now this group site. Hopefully I can learn and then share some of my experiences.