This model was a 14 seater station cart. It used a 2 cylinder L-head engine of 3167cc with a bore and stroke of 120x140mm. Chain drive and magneto ignition featured as on other Sunbeams of this period.
The 16hp sold for 465 pounds. It weighed 30cwt. The wheelbase was 10ft and track 4ft 6in. The description of the chassis sounds remarkably similar to that of the 35, so I suspect they used a common chassis.