Brothers Derek and Don Rickman believed
that there were good frames and good engines but the two rarely
were put together. The brothers built the lightweight 'Metisse'
chassis to fit a number of various engines to create off-road
In later years the company made high quality street and racing
frames and even began building motorcycles using left over
Constellation engines after the demise of Royal Enfield. During
the mid-70's, Rickman used Honda CB750 engines in their street
bikes. The company stopped producing motorcycle chassis in 1975
and concentrated their efforts on manufacturing accessories.