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).
Data sheet documenting starter motor brake tests.
| Identifier | ExFiles\Box 64\1\ scan0305 | |
| Date | 21th April 1927 | |
| STARTER MOTOR TESTS. FORM 3. BRAKE TEST. Φr and ΦE Φr = β * T/C where β = (10.5b) / (1.41 ZP) ΦE = α * E/N where α = (60x10^5xb) / (Z P) b/ZP = .00555 α = 10^5 / 3 β = 394 C. Tr{Capt. F. W. Turner - Finance} T/C Φr E N E/N ΦE 20 — — — 11.60 — — — 30 — — — 11.40 — — — 40 2.0 .050 19.7 11.20 3110 .00360 120.0 50 6.0 .120 47.3 11.00 2660 .00414 138.0 60 10.2 .170 66.9 10.80 2330 .00464 154.8 80 19.5 .244 96.1 10.40 1810 .00575 191.8 100 28.5 .285 112.2 10.00 1460 .00685 228.5 120 39.2 .3265 128.7 9.60 1180 .00813 271.3 140 51.0 .3645 143.5 9.20 940 .00979 326.5 160 63.0 .394 155.2 8.80 700 .01258 419.0 180 75.0 .416 164.0 8.40 505 .01662 554.0 200 86.8 .434 171.1 8.00 310 .0258 860.0 220 99.0 .450 177.2 7.60 110 .0691 2305.0 240 — — — 7.20 — — — 21.4.27. | ||