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).
Mesh size and material for filters at the base of the carburetter.
| Identifier | ExFiles\Box 135\2\ scan0055 | |
| Date | 3rd November 1924 | |
| x3701. y4160 Mr.Shelton. Mr.Lightbody. c. HS.{Lord Ernest Hives - Chair} BY4/H.{Arthur M. Hanbury - Head Complaints} 3.11.24. CARBURETTERS. RE FILTERS AT THE BASE OF THE CARBURETTER. -------------------------------------- With reference to Mr.Royce's recent proposal to add filters to all the carburetters just below the float chamber, I am inclined to think that the 30 mesh is too coarse. I think we should go to 50 mesh to start with, and Hs.{Lord Ernest Hives - Chair} should check out 30 and 50 mesh experimentally to see whether there is any exceptional disadvantage in using the 50 mesh, but it seems to me that 30 mesh would permit quite sizeable particles of grit or scale, which would result from corrosion inside of the copper pipes, passing through the mesh and holding the needle off its seating. The gauze should be made in plain monel metal gauze, not cloth. The above means that we shall rely, so far as regards filtering the petrol itself, on the fine mesh filter gauzes of the petrol tank. The further filter is put in to stop small bits of grit and scale, and for no other purpose. The grit and scale would enter the petrol by cracking off of the inside of the pipes and connections between the main filter in the tank and the carburetter, due to corrosion. BY.{R.W. Bailey - Chief Engineer} By | ||