Next task is to mount the tail onto the main frames and for effect I also put on the main blades at this point.
Below left is the belt shown on the tail drive gear. Belt tension should be fairly loose.
Pinching the belt together it should be possible to make it nearly touch.
An over tight belt will sap performance.

It's starting to look like a proper heli now, just put on the blades to get an idea :)
Note the brass bushings in the blade holes.