I am 77 years old. As a young teenager in the UK, I bought a Morgan 3 wheeler which had a JAP engine mounted on the front. I bought it from a buddy who sold it as a 1932 model, but the police visited me to tell me that the log book, which is like the Title, showed that it was really a 1929 model.
I believe it was a chain drive . I paid the princely sum of about $15 USD for it ! I do not remember how I got rid of it, but wish that I had it now!!
Thanks for bringing back those memories.
Now, I have a 2007 Champion GL1800 Trike and love it, but I would bet that my old Morgan JAP engine trike would now be worth more than my present ride!