Popular learner which lacks the extreme discomfort of some replicas. 22hp derestricted engine better suits the Deltabox chassis and remains reliable for the first 35/40k, when rebore and exchange crank needed. Calipers and s/a bearings short-lived. Avoid examples that have been tuned to extremes (30hp plus). Stock 12hp models rare. Many written off, engine can seize up without much warning on dying examples.