Massachusetts Bay Transportation Authority operates 55 of these cars on it's system.  

General Information
Manufacturer: Boeing-Vertol
Vehicle Type:  Double Ended Articulated
Cost per Car (US $) :  300,000
Number of Cars Ordered:  175
Number of Cars Delivered:  151
Year Delivered:  1976-1978
Date in service: 1976
Voltage:  650 Volts DC
Series (Numbered):  3400-3543

Dimensions/Weight/Capacity 
Length over couplers:  73 feet
Length over body ends:  71 feet
Width:  8 feet, 10 1/4 inches
Height (rail to roof-panto locked down):  11 feet,  4 inches
Floor height (rail to floor):  34 inches
Pantograph operating range:  11' 4" - 19'
Empty weight per car:  67,000 pounds
Interior headroom (center aisle):  6' 5"
Interior width (minimum):
Doorway width (minimum):  4' 6"
Doorway height:  6' 11" from 1st step
Step height (1st step):  12" above top of rail

Performance 
Initial acceleration on level tangent track (mphps):  2.8
Service acceleration on level tangent track (mphps):  3.1
Acceleration 0-50 w/100 riders: 37 seconds
Service Braking on level tangent track (mphps):  3.5
Emergency braking on level tangent track below 30 MPH:  6.0 mphps
Emergency braking on level tangent track above 30 MPH:  4.0 mphps
Maximum design speed (mph):  70 MPH (Speed attained in 1975 at DOT test track, Pueblo, Colorado)
Maximum operating speed (mph):  52 MPH
Maximum grade (feet/inches):  9%
Minimum horizontal curve radius (feet/inches):  42 feet
Minimum vertical curve radius (feet/inches):  Crest: 300'; Sag: 400'
Noise Levels (Interior, all systems operating):  65 dBA
Noise Levels (Exterior 50' at 40 MPH, all systems operating):  80 dBA 
Maximum cars per consist: 3 (Maximum for Platform length limit); 4 (Maximum for Trainline)

Body 
Manufacturer:  Boeing-Vertol, Philadelphia, PA.
Body Material:  LAHTS (Low Alloy High Tension Steel)
Ceilings and Walls:  Molded melamine plastic panels
Floor Material:  Rubber Sheet
Window type:  Sealed Laminate Safety Glass
Doors:  6 (3 per side)
Windows:  20 (10 per side)
Seats:  Molded Fiberglas with vinyl covered padded inserts

Propulsion/Trucks
Propulsion manufacturer:  Garrett Airesearch Manufacturing
Number of trucks/car:  3
Number of axles/truck:  2
Number of motors/car:  2
Motor Details: Monomotor, 210 HP, 152 KV, 280 VDC, 600 Amp, force ventilated by separate mounted blower motors
Wheel diameter (inches): 
Wheel base:  23 feet
Track gauge (inches):  4 feet, 8 1/2 inches (Standard)
Gear ratio:  5.571:1
Gearbox:  Rockwell Standard, single reduction Hypoid type
Truck manufacturer:  Toyku Car Company

Brakes/Suspension
Brake System Types: Friction (Disc) Dynamic (Regenerative) and Track (Electro-Magnetic) 
Service Brake manufacturer:  New York Air Brake Company
Service Brake Type:  Electro-Hydraulic-Pneumatic friction Disc Brakes
Spin/slide protection:  Provided through Electronic propulsion logic during service braking
Track Brake manufacturer:  Socimi S.p.A., Milan Italy
Track Brake Details:  Type AM110F, 16-20 VDC, 6 per car, 2 per truck

Vehicle Capacity
Number of seats:  48 (4 seats removed for wheelchair access)
Design load:  219
Crush load:  275
Wheelchair capacity:  2

Passenger Convenience Items
HVAC Manufacturer:  Vapor/Sutrak
A/C type/capacity:  2 roof-mounted units; 7 tons w/individual thermostats and controls
Heating type/capacity (kW):  Provided through HVAC units
Seat Manufacturer:  General Seating and sash Company
Public Address System:  AEL-Emtech Corp.  Provided through radio hand set
Interior Lighting Manufacturer:  Luminator-Gulton Industries;
Interior Lighting:  Continuos Fluorescent, above seats Normal: 12 fixtures DC Fluorescent; Emergency: 4 fixtures DC Fluorescent
Number of Destination Signs:  6 Hand Crank Signs
Door type:  Original: Plug type; Rehab: S.M.C., 2 leaf bifold, electro-pneumatic 24-42 VDC, 140 PSI
Number of doors/car:  6 (3 each side)

Electrical and Control Systems
Control:  Chopper Controlled
Low voltage power supply:  37.5 VDC
Motor Control:  Solid state Electronic Propulsion Logic Unit
Amperage draw:  600 Amp

Notes
Car Status:  The 55 cars in revenue service were rebuilt 1996-1997 by Amerail, Herkimer, NY
5 non-rebuilds are in dead storage
2 were rebuilt by MBTA (in-house) during the 1980's as work cars (1 re-railer, 1 MOW car)
89 Boeings have been stripped of parts and the hulks have been scrapped in the past 10 years

Car Specifications: Courtesy of Charlie Kenneally
Photo and background: Courtesy of Scott Moore.

Disclaimer - Information posted has been received in the form of a phone conversation, private e-mail, newsgroup posting, webpage posting, or printed periodical.   Lightrail.com and it's staff  does not guarantee the accuracy of the information, however does make efforts to insure sources are reliable.

Updated May 26, 2000