Transmagnetics (or non-Headline) motor mid-drive configuration.

From left to right: 16t driving sprocket, 90t freewheel sprocket (#25 chain) going to motor, Shimano 7-speed freewheel.

Note that the 1.75" tube is just long enough for this configuration.

2010/01/1 15:08:24

Exposure mode: program (auto)
Metering Mode: matrix
Exposure time: 0.0095 s (1/105)
Aperture: f/2.8
Focal length: 8.0mm (35mm equivalent: 37mm)
ISO: 200
Flash: No
File size: 1632093 bytes
Camera maker: FUJIFILM
Camera model: FinePix F10
Resolution: 2848 x 1897