BFC Røvskubber, Denmark. Exhibited in 1950, BFC had to rush to meet the demand, the first year's production was 10,000. From 1951, a Type 1, mounted on a men's Ideal. The engine was only in production 1950/1, as the Danish transport ministry started requiring all new motorcycle type registrations to have improved structures over a bicycle, following a lot of nasty accidents with broken forks and suchlike.
Diesella Røvskubber. Not really a diesel at all. The Røvskubber is a low joke. A rove, in old time Englsh boat building was a leather washer for banging a fat headed nail through. Skubber = scrubber. Now think about the proximity of the drive roller to the lower end of the rider. Right, carry on.