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).
Weight comparison of front suspension components for the 25/30 HP and Wraith models.
| Identifier | ExFiles\Box 10\5\ 05-page047 | |
| Date | 15th February 1937 | |
| FRONT SUSPENSION. COMPARISON OF 25/30 H.P. AND WRAITH WEIGHTS. 25/30 H.P. lbs. ozs. Front Axle - No Brakes No X Steering 53 11 Road Springs .................... 56 4 Shock Dampers ................... 23 - Engine X Member ................. 13 - 1st X Member & Forgings ........ 11 8 Rear Spring Brackets ............ 3 4 Front Shackles .................. 3 8 WRAITH. lbs. ozs. Main Forgings + levers + shafts + studs ..................... 54 - Outer Alum. Spring Housings... 9 4 Studs & Nuts for above ...... 2 12 Inner Alum. Cover & Studs .... 6 - Oil Filler & Cap ............ 1 4 Top Triangles & Buffer ........ 17 - Bottom Triangles & Buffer .... 15 - Damper Piston & Spring Buffer 6 - Shock Damper Units 8 12 Springs ....................... 25 11¼ Yokes ......................... 10 - Front Pan ..................... 35 9 Front X Member + etc. ....... 20 - TOTAL = 164 3 211 13¼ INCREASE .................... 47 10¼ | ||