From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagrammatic study of balloon tyre contact patches under various test conditions and setups.
| Identifier | WestWitteringFiles\N\2October1925-December1925\ Scan10 | |
| Date | 12th June 1925 guessed | |
| Top Section: (E) FRONT AS (A) BUT WITH SPRINGS ON INSIDE OF S.S. TUBE ONLY. Since found to be misleading. (B) O/S FRONT Middle Section: (D) FRONT N/S R.R. STD TYPE S.S. TUBE SOLID PIVOTS & TRACK AS BEFORE ALL TESTS WITH 34" x 7.30 BALLOON TYRES. (B) N/S FRONT As (A) BUT WITH NO FRICTION IN PENDULUM LEVER DAMPED SPRING DRIVE Bottom Section: (C) N/S HISPANO TYPE S.S. TUBE PIVOT LEAN 3° BACK TRACK 3/4" IN AT FRONT (A) PIVOT LEAN 3° BACK TRACK OF WHEELS 3/4" IN AT FRONT Far Left Edge (partial text): CE | ||