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).
And annotations discussing the design, materials, and testing of brake shoes.
| Identifier | Morton\M18\ img111 | |
| Date | 24th August 1914 | |
| Cut thro. lightening hole - distortion may be reduced. (Also keep me informed, FAP, of further tests). R to Worthy. C.J. Na.{Mr Nadin} By? Rivets rubbing, essential? Alum probably wear itself clear. [Annotation: Try Cu or Al.] Anxious to avoid unnecessary ref No's for design work that doesn't tally with final distribution? Try larger no. of smaller rivets! [Annotation: Try 2 stiffening ribs (as per sketch).] I think we are quite within sight of making this brake into an exceedingly good one & I feel sure we shd be perfectly safe in going ahead with the drums for 3" wide ferodo & the cooling ribs as arranged. also, I agree, go ahead with the 1/4" thick ferodo. The only doubtful point seems to me whether the order of material of the shoe large or small, copper or alum rivets wd{Mr Wood/Mr Whitehead} not affect the material or machining but only the drilling of the shoe, which I hope will soon be settled. FHR. [Left Margin Annotation in Red Ink:] A NOTE OF CONTROLLED TRIUMPH SATISFACTION SUCCESS AT LAST | ||