Will try to answer a few questions:
The only other one I have is
and the bike is now packed away for the winter.
Probably around 50 mph but as Dave M points out you would need to be brave as the brakes, especially the front, are feeble. A more practicle speed is around 35 mph.
Does it run
Most definitely and is likely to be very reliable. The Triumoh Model H was christened the "Trusty Triumph" by the British Dispatch Riders in the First World War.
Yes, Acetylene. Told it give a brilliant white light but needs a 2hr clean after use as the reside solidifies and corrodes unless removed.