Yes there were solo bikes, lots of them.
There were light solo bikes, medium solo bikes and heavy solo bikes.
The thing with the R-75 and K-750 was that they were specifically built with sidecars. A normal heavy bike can have a sidecar added. The R-75 and K-750 were built like a trike with the sidecar wheel also being powered, differential on the rear axle.

Light bikes (only as solos)
DKW RT 125 (125 cc)
Triumph BD 350 W (350 cc)
NSU 251 OS (250 cc)

Medium (only as solos?)
BMW R 4 (400 cc)
BMW R 35 (350 cc)
Victoria KR 35 WH (350 cc)
DKW NZ 350 (350 cc)

Heavy (these could also have sidecars, the gearboxes had different ratios with/without sidecars)
Zündapp K 500 W (500 cc)
Zündapp K 800 W (800 cc) only used with sidecar when on the eastern front, just as good as the R 12
Zündapp KS 600 W (600 cc)
BMW R 12 (750 cc) very popular machine
NSU 601 OSL (600 cc)
Victoria K. R. VI (600 cc)
Victoria KR 6 Bergmeister (600 cc)
Victoria KR 9 (500 cc)

Heavy with powered sidecar (differential needs blocking if sidecar is removed)
BMW R 75 (750 cc)
Zündapp KS 750 (750 cc)
These two were specifically developed for the Wehrmacht

The table above shows that there were other heavy bikes built without sidecars, one of them also had a larger (by 50 cc) engine than the R-75 or KS-750

By the looks of the "fender" on the front wheel and the position of the headlight I would say that the bike in the image above is a BMW R 35.


The R 75 had a support for the "fender" which extends in an arc above the sheet metal, protecting the front edge of the registration plate.

The KS-750 has a fender which does not extend so far down on the sides of the tire.

The front forks are also totally different.
/ Robin

Real is better.

Making real wire wheels in all scales

Hi, one bike that doesn't seam to have been mentioned Vision Models Zundapp KS600. Available solo with rider or as a combination with a nice sidecar.

Regards Jason