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).
Modifying and testing a pressure balance bell and tank vent installation.
| Identifier | ExFiles\Box 61\3\ scan0078 | |
| Date | 10th July 1930 | |
| Messrs. Rolls-Royce, Ltd., Date 10.7.30. Page 2 hole getting beaded over with a drop of petrol, and if there were two holes, one at either end, it would ensure a freer circulation to this bell chamber. As the baffle is somewhat on a slope, we think that this would be beneficial, and quite easy to try, if you would be so good as to drill another hole of the same size at the opposite end of the baffle in one of your existing experimental car installations. The writer has now been running a pressure balance bell of this type on his own car, and it appears to work in exactly the same way as the single hole installation, which was quite satisfactory. No unnecessary trouble has been caused us by your decision in this matter, as we are proceeding with a tank and bell vent installation such as you detailed in your previous letter, and as soon as we have finished our tests on it, we will send it to you in its "mock-up" form, so that you may see it and have it by you for reference, as an illustration of what it would look like, and what can be done in the way of placing the unit in this tank vent, introducing the bell vent into the last chamber thereof; the baffles necessary, together with the Sprengel pumping tubes giving direct to atmosphere. We are testing this out on a pressure rig now, and will let you have the results of the tests on the single line | ||