ggia-

someone else will need to confirm this, but I'm pretty sure that the gears are as follows (i don't know if it's possible to convert ratio to inches?):

Gear Ratio

• Overall Range - 305%
• Gear 1 - 1.00 (Direct Drive)
• Gear 2 - 1.28 (+28%)
• Gear 3 - 1.45 (+45%)
• Gear 4 - 1.64 (+64%)
• Gear 5 - 1.86 (+86%)
• Gear 6 - 2.10 (+110%)
• Gear 7 - 2.38 (+138%)
• Gear 8 - 3.05 (+205%)

(taken from the Sturmey Archer xrf8 site at http://www.sturmey-archer.com/hubs_8spd_XRF8.php)

(maybe check the tech manual too: http://www.sturmey-archer.com/pdfs/XRF8.pdf)