Significance

Provides information about the tendency of Brill Maximum Trucks or bogies (22E) to derail.

Physical description

Single Foolscap sheet - typed, though not formally titled, the subject of the note was ""Why do maximum traction trucks derail?” Looks at the way a Brill 22E truck works, weight distribution, wheel, and rubbing plates wear, and rail wear issues.
Dated 11/6/1975. Noted that Tony Smith of then BTPS asked the question.

Inscriptions & markings

Has Bob's initials under the last paragraph.