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).
Passenger load assumptions and providing tables of weights for various car types on PI and PII chassis.
| Identifier | ExFiles\Box 16\7\ Scan296 | |
| Date | 1st October 1930 guessed | |
| - 3 - You may criticize the assumption of 4 passengers on all cars, when some may be coupes or roadsters. In the case of two-passenger cars our assumption does overspring the rear. But, we find this is desirable to reduce pitching at high speeds to which such cars are particularly liable. I am not sure whether you assume the full passenger load on PII, or half the passenger load as on the 20 HP. Tables of Weights. I attach chart #15235 showing the general type of cars referred to below. Latest average weights of active types on PI chassis are:- Table I Type Front Rear Total Darby 2640 2620 5260 Regent 2700 2740 5440 Dover 2700 2920 5620 St.{Capt. P. R. Strong} Martin 2710 2890 5600 20EX. Newmarket (small) 2720 2860 5580 " (large) 2755 2985 5740 Huntington 2715 2985 5700 St.{Capt. P. R. Strong} Andrew 2730 2990 5720 St.{Capt. P. R. Strong} Regis 2720 2990 5720 Trouville 2755 2965 5720 (The Newmarket is the type I brought to England, Full - collapsible all-weather sedan-touring. It is made in 5 passen-ger type like 404-M which I brought over, and in 7 passenger type with two auxiliary seats.) "Dead reckoning" from the few PII cars we have weighed shows a saving, with two spare wheels at side, of about 120 lbs. in front and 160 lbs. at rear or- Table II Type Front Rear Total Derby 2520 2470 4990 Regent 2590 2580 5170 Dover 2580 2780 5360 St.{Capt. P. R. Strong} Martin 2590 2740 5330 Newmarket (small) 2600 2710 5310 " (large) 2635 2835 5470 Huntington 2595 2835 5430 St.{Capt. P. R. Strong} Andrew 2620 2840 5460 St.{Capt. P. R. Strong} Regis 2610 2840 5450 Trouville 2635 2815 5450 (A handwritten right curly brace covers the totals for the last five entries, with '5405' written alongside). (Continued) | ||