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).
Comparative analysis of a 25-HP Straight 8 Daimler chassis from a coachbuilder's perspective.
| Identifier | ExFiles\Box 92\1\ scan0052 | |
| Date | 9th January 1935 | |
| - 2 - 25-HP Straight 8 Daimler. Park Ward's have another chassis coming in almost immediately and we suggest that we may wish to closely examine it for the following reason. Mr Ward is strongly of the opinion that it is a better chassis from the coachbuilders point of view than ours, i.e. P.2. and 25-HP. where rigidity is concerned. He has built six bodies for Daimler, including their trails car, and has not had one back for rattles, although quite a good mileage has been done. The body construction is identical with that employed on our 25-HP. bodies. He says also that on riding in the car he notices that there appears to be less vibrational flexing of the body and relative movement of the doors and jambs. Analysis of Frame - Daimler. (a) Side channels 7.165" deep, flange 1.5" wide at maximum. Tie bars as on RR. (b) Three fairly large diameter crossmembers, (2 1/2" to 3") all aft of the dash. (c) Body mounted on the chassis on a ledge bolted to the frame web and bolted at quite frequent intervals. This latter feature may be of interest. The frame side is subjected to very little torsion, but the body side to a greater amount than in our case. We suggest that we should investigate our body brackets and their fixing to the frame web, to see if there is an excess of flexibility in the bracket, or in the frame web to which it is bolted. Also it may be that we should profit if we were to increase the number of brackets until they are almost continuous, as on the Daimler. We would like to go into this matter more fully. EV.{Ivan Evernden - coachwork} | ||