|Norcroft 1000cc Royal Enfield V-Twin|
The Norcroft website is here. Their Facebook page is here.
The Norcroft engine has a displaement of 1000cc: a custom bottom end accepts two 500cc Royal Enfield top ends.
We have previously posted about another Royal Enfield based V-Twin, Aniket Vardhan's Musket. Aniket's engine is a 59degree configuration available in both 700cc (using 350cc top ends) and 1000cc (using the 500cc cylinders). The Norcroft engine appears to be something more like 45degrees... in these close-up engine pics it looks a lot like a Vincent, I think.