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).
Floorboard sealing, material choices like Plymax, and scuttle ventilation systems.
| Identifier | ExFiles\Box 136\5\ scan0057 | |
| Date | 8th September 1932 | |
| - 2 - passage are effectively sealed afterwards, will enable you to make a more or less completely gas-tight joint between the front edge of the first floorboard and the aluminium dashboard. Exactly how this joint can be made gas-tight naturally we must leave to you, but we believe that the mere laying of the board against the dash cannot in itself be effective. It seems to us to want some broad ledge on which the board could rest which will make a gas-tight joint with the underside of the floorboards and allow gas to pass below the boards and not up through the joint. We note with interest your remarks about the floorboards under the front seats, and we are naturally giving this matter very careful consideration in conjunction with the Coachbuilders. Ev{Ivan Evernden - coachwork} tells us that WW have recommended the use of Plymax for floorboards as being something which does not require metal edges, does not shrink and is used for such work in other vehicles, notably motor coaches. Perhaps you would give us information on this subject in due course. So far as the admission of cold air is concerned, we are at present having cars fitted up with air scoops which we have reason to believe may prove quite effective. We want to avoid reverting to the "Spinney" type ventilators if we can on the grounds of appearance quite apart from the cost and the difficulty of rendering them water-tight without a lot of complication. We are also hoping to try the effect that is brought about by scuttle ventilators opening forward on a car having a louvred bonnet, which it is contended allows hot air from the bonnet to pass into the scuttle through these ventilators. It may be that a car would keep cooler without scuttle ventilators if that is found to be the case. Cx.{Major Len W. Cox - Advertising Manager} | ||