BCI Bryant Control D55 DC Motor Control. % of base speed. Bryant Control was incorporated in 1976 and supplies. Custom automation solutions for a wide variety of. Visit our website for more information. The item “Bryant D55 90/180VDC DC Motor Speed Control (Dart, KB)” is in sale since Tuesday, August 4, 2009. This item is in the category “Business & Industrial\Industrial Automation & Motion Controls\Drives & Starters\Drives & Motor Controls\Speed Controls”. The seller is “edbfmi” and is located in Indianapolis, Indiana. This item can be shipped worldwide.