20-02-2022, 11:17 PM
From old road tests and many on here the original 4.9:1 is/was considered overgeared and despite faster running today several have converted early cars to the common 5.25:1. To the occupants 5.25 Sevens seem high revving but are no more and less so than many older cars (1950s Minx, A40 A30 ect) and much less than commercials (Fordson A40 pick up etc). Revs do not prolong the crank. It is a bit surprising that the higher speed sports models were lower geared, but the wind drowns out the din.
Economy not a consideration for most owners but generally improves as the gear revs are lowered. Unless on more sophisticated carbs the engine is more often prodded into enrichment territory, possibky the action of the Prius computer. I assume he corrected for the greater distance run. Peak power on pre 1936 is about 3200 rpm, admittedly a speed hard to maintain in top on any hill. Lowering the gearing further reduces the reasonable speed in 3rd, already modest at prudent revs.
Economy not a consideration for most owners but generally improves as the gear revs are lowered. Unless on more sophisticated carbs the engine is more often prodded into enrichment territory, possibky the action of the Prius computer. I assume he corrected for the greater distance run. Peak power on pre 1936 is about 3200 rpm, admittedly a speed hard to maintain in top on any hill. Lowering the gearing further reduces the reasonable speed in 3rd, already modest at prudent revs.