Walthers Mainline 910-21401 HO EMD F7 A-B B&LE #720A/720B Sound

Bring classic first-generation diesel power to your HO layout with the Walthers Mainline 910-21401 EMD F7 A-B set, painted for Bessemer & Lake Erie #720A/720B. EMD introduced the F7 in 1949 as American railroads dieselized in earnest, and the versatile cab units handled both freight and passenger assignments, with many examples lasting into the 1980s. This set pairs a powered A unit with a powered B unit and is offered as a one-time run of these road numbers. Factory-installed handrails and colorful, accurate lettering complete the layout-ready package.

The 910-21401 is equipped with an ESU sound decoder that operates on both DCC and DC layouts, offering full DCC compatibility with 14, 28 and 128 speed steps and four function outputs with brightness set by CV. The sound suite includes a full 8-notch prime mover, four air horns and two bells changeable by CV, compressor, dynamic brake and multiple lighting effects, with an LED Mars light above the headlight on the A unit. Power comes from the same drive used in WalthersProto locomotives, featuring a five-pole skew-wound motor, 14:1 gear ratio, helical-cut gears, all-wheel drive and pickup, dual machined brass flywheels and a heavy die-cast metal chassis, riding on RP-25 metal wheels with Proto MAX metal knuckle couplers.

Key Features:
- HO Scale (1:87) ready-to-run EMD F7 A-B diesel set with both units powered
- Item 910-21401 from Walthers Mainline
- Painted for Bessemer & Lake Erie #720A/720B
- ESU sound decoder, dual-mode DC and DCC, 14/28/128 speed steps
- Full 8-notch prime mover, four air horns and two bells changeable by CV
- Compressor, dynamic brake and multiple lighting effects, LED Mars light on A unit
- WalthersProto drive: five-pole skew-wound motor, 14:1 gears, dual brass flywheels
- RP-25 metal wheels and Proto MAX metal knuckle couplers
- One-time limited run of these road numbers