>>1750878Pic is not mine.
But i have just got the same 1960s NSU Sport bicycle. Single speed.
I just overhauled it and its amazing how well everything was made, bottom bracket and rear hub have oil holes so you can re lube them.
Cones in the bearings were easy to adjust because the axles have slots so the nut does not change the cone when tightening.
its pretty lightweight for being a 60s product,
No rust in the tubes because there painted on the inside
It has internal cable routing. the lights and dynamo still work.
the chain was lengthened over 1 link so this thing was definitely rode a lot.