With the new coupling housing, it is possible to mount brush
motors of the 500 and 600 speed class with a pitch circle of 25 mm.
Likewise, the Graupner Brushless Speed motors can be mounted. The base
is such that even a outrunner motor roams anywhere.
Holes: 25 mm bolt circle horizontally. Long holes vertical.
The mounting holes for the base can be made by yourself. Alternatively, it can also be glued.