Thanks for the information.
The brakes are the coaster type. I would have thought that the "sprag clutch" was replaced with a solid fixed unit, as the gear and the main crankshaft is surely a standard replacement part? Do you know of any sources for supply of these parts?
I have just joined the forum and I am hoping someone can help me with a technical question regarding the TSDS2 mid drive unit.
I ordered 3 units from China a while ago and have only just installed the second one now. All three were to be installed in "standard" bikes, all with 7 hub-gears...