I had one of the early ones when I was young and single.
It was at wo stroke and had a bottle on the side of the carby you filled with 2 stroke oil and would mix itself.
Wouldn't go over 80 km on the road but couldn't bog it if you tried in the scrub.
You might want to check with the local authority's as last I heard was that a majority of the brindies were closed to the public. Mcintyres and lovells flat were closed and not to sure where else.