I’m a member of the Bay Area Electric Railway Association. They have several PCC cars in their collection at the Western Railway Museum, and I have spent hours riding them. I have also ridden the PCC cars on San Francisco’s historic Market Street ‘F’ line. Several years ago, my wife & I were on a BAERA charter trip that spent an entire day on a single PCC car traveling over every streetcar line in San Francisco, including a line that has not had streetcars run for something like 20 years. The only place we didn’t go was through the twin peaks tunnel because the PCC cars’ power pickup system is not compatible with the physical wiring in the tunnel.
In all of those trips, I have never seen a PCC car get to a speed much over 30 or so mph. I just checked with the WRM shop supervisor and he says the PCC cars were designed for a top speed of 50 mph, but he also said that in his experience, that speed was not commonly attained.
Remember, these were the tracked equivalent of a city bus. They typically ran on the city street along with rubber tired vehicles, and stopped every two blocks. Automobiles on high density city streets are usually limited to speeds less than 30mph and are frequently unable to move even that fast due to congestion. Without dedicated right of ways, the PCC streetcars were subject to the same restrictions, along with the need to accelerate and decelerate every couple of blocks. Even the cities with dedicated right of ways had level crossings (cross streets with signals) at the end of every block. No time or distance to get to high speeds, then stop at the next traffic light.
As a matter of reference: In 1:29 scale, 30 mph is only ~90ft / minute or ~1.5ft / second. As I wrote before, I don’t have one, but it does sound like Aristocraft got the speed (close to?) right.
Happy (Low & Slow) RRing,
Jerry