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).
Test report comparing 'Packless Gland Co.' and 'Smith's Standard' calorstats.
| Identifier | ExFiles\Box 156\1\ scan0035 | |
| Date | 9th January 1934 | |
| "PACKLESS GLAND CO." CALORSTAT TESTS. E.{Mr Elliott - Chief Engineer} 80893. Made by "Packless Gland" Co. - As used on 1-B-4 during 10,000 miles Trial. For comparison with Smith's Standard "H" Filling. Leverage 1.52:1 First Table: Shutters "Closed" Temp. oC. | Pull-lb. At Lever | Pull-lb. At Calorstat | Push lb. 16o | 7 1/4 | 11.0 | 30o | 6 1/4 | 9.5 | 40o | 4 1/4 | 6.5 | 50o | 3 1/4 | 4.95 | 60o | 3 1/4 | 4.95 | 70o | 1 1/2 | 2.28 | 78o | Changeover | | 80o | | | 2 3/4 90o | | | 29 3/4 100o | | | 55 3/4 Tests taken following complaint that the "Packless" type was more "sluggish" than the "Smith" type. Wind pressure tests to be taken on chassis. The loads above to changeover are approx. the same for both types. Tests repeated with 1-J-III Packless type Calorstat - practically new. Second Table: Ascending Temp. Temp. oC. | Shutters "Closed" Pull-lb. Lever | Shutters "Closed" Pull-lb. Cal{Mr Calvert}'st.{Capt. P. R. Strong} | Shutters "Closed" Push lb. | Shutters "Open" Pull-lb. Lever | Shutters "Open" Pull-lb. Cal{Mr Calvert}'st.{Capt. P. R. Strong} | Shutters "Open" Push lb. 15o | 5 1/4 | 8.0 | | 50 1/4 | 76.5 | 20o | | | | | | 30o | 4 1/4 | 6.45 | | 48 1/4 | 73.5 | 40o | 3 1/4 | 4.95 | | 46 1/4 | 69 | 50o | 2 1/4 | 3.42 | | 43 1/4 | 66 | 60o | 2 | 3.04 | | 39 1/4 | 59.5 | 70o | 1 1/4 | 1.9 | | 32 1/4 | 49 | 80o | Change 78oC. | | 7 3/4 | 8 1/4 | 12.5 | Change 84oC 11 1/4 90o | | | 24 3/4 | | | 95o | | | 43 3/4 | | | 98o | | | 54 3/4 | | | 100o| | | | | | 29 3/4 Descending Temp. Temp. oC. | Shutters "Open" Pull-lb. Lever | Shutters "Open" Pull-lb. Cal{Mr Calvert}'st.{Capt. P. R. Strong} | Shutters "Open" Push lb. 15o | 48 3/4 | 74 | 30o | 46 3/4 | 71 | 40o | 42 3/4 | 65 | 50o | 40 3/4 | 62 | 60o | 36 3/4 | 56 | 70o | 27 3/4 | 42.2 | 80o | Change 80oC. | | 14 3/4 100o| | | 29 3/4 Wt. of "Pull" Tray 1 1/4 lb., and of "Push" Tray 3/4 lb. included in above figures. | ||