The Railroad Museum at Ardenwood

SPCRR No. 581

Item

Dublin Core

Title

SPCRR No. 581

Subject

SPCRR No. 581

Description

A 5 ton Plymouth gasoline powered locomotive with a hydraulic transmission. It is a modern industrial locomotive used for operations, switching, and maintenance of way. This engine was purchased by the SPCRR in August 2004 after leasing it for several years from a member.

It is nicknamed 'Katie'.

After a few years of service, the yellow paint was starting to show it's age and a 'guerrilla' spray paint job of rust red primer was applied and the engine was renumbered SPCRR 1.

By 2016, the 'guerrilla' paint job had deteriorated badly and in the winter of 2016 this engine was refurbished, stripped to bare metal, painted, and lettered as SPCRR 1.

During the winter of 2018 The gasoline engine was replaced with a diesel and air brake controls and pump were added to allow State air braking requirements for the passenger train. In 2020 then engine was renumbered #581.

Locomotive Item Type Metadata

Road Number

581

Locomotive Model or Class

CN6663 10/1968 36" HSG B 5 ton D/H; 5-Ton Diesel-Hydraulic locomotive with high cab

Status

Operable

Builder / Manufacturer

Plymouth Locomotive Works, Plymouth, OH

Build Date

10/1968

Historical Road Numbers

US ARMY #581
Olin Corp #OB-588

Fuel Type(s)

Gas (Original), Diesel (2018-)

Ownership / Custodial History

US ARMY #581 > #C0268 Badger Ammunition Plant, Baraboo WI
Olin Corp #OB-588, Badger Ordnance Works, Baraboo WI
Sold to Brook Locomotive Works, Georgetown CA
Sold to SPCRR, 2004, Renumbered #1 then #581

Collection

Citation

“SPCRR No. 581,” The Railroad Museum at Ardenwood, accessed November 4, 2025, http://museum.spcrrtesttestsite1234567.org/items/show/9.