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Does anyone know exactly all of the Rockwell front and rear axles that were used in the Orion I bus in all years 1976-1993? This is information I'm hoping to get added to this page in the future: http://cptdb.ca/wiki/index.php?title=Orion_Bus_Industries_%27Orion_I%27 Older Orion I brochures (and my 1981 TMC City Cruiser brochure) list the following: Front: model FF931, 12,000 lbs. GAWR Rear: model R143, 23,000 lbs. GAWR From the 1983 Orion brochure that I have: Front: model FF932, 13,400 lbs. GAWR Rear: model R143, 23,000 lbs. GAWR But in 1984, the 35' and 40' buses (the latter of which was introduced that year) went for higher-rated axles. Front: model FG943 or 17100, 14,600 lbs. GAWR Rear: model 59742, 25,000 lbs. GAWR The 30-foot models also had a newer front axle that year in model FF942 (13,200 lbs. GAWR) but retained the R143 rear axle. In 1988, Rockwell introduced these new rear axles: 30 foot buses: model RC-23-160, 23,000 lbs. GAWR (replaced R143) Buses longer than 30 feet: model 61142, 26,000 lbs. GAWR (replaced 59742) To round things up: 1976-1979 models: FF931 front / Q148 rear (34,000 lbs. GVWR) 1980-1982 models: FF931 front / R143 rear (35,000 lbs. GVWR) 1982-1983 models: FF932 front / R143 rear (36,400 lbs. GVWR) 1984-1987 models: 30 foot: FF942 front / R143 rear (36,200 lbs. GVWR) 35 and 40 foot: FG943 or 17100 front / 59742 rear (39,600 lbs. GVWR) 1988-1993 models: 30 foot: FF942 front / RC-23-160 rear (36,200 lbs. GVWR) 35 and 40 foot: 17100 front / 61142 rear (40,600 lbs. GVWR) Some questions I want to ask you all: 1. Did Orion ever catalog the Rockwell FG943 front axle (14,600 lbs. GAWR) for their 1984 I's (models 01.507 to 01.510)? 2. Did Orion ever catalog the Rockwell Q148 rear axle (22,000 lbs. GAWR) for their pre-1981 I's? Thank you very much! ~Ben