2009 Jamis Bicycles Aurora Base

	47	50	53	55	57	59	62
Seat Tube Length, C-TTT	370mm	500mm	530mm	550mm	570mm	590mm	620mm
Top Tube Length, Effective/Horizontal Center	513mm	535mm	545mm	550mm	560mm	570mm	590mm
Head Tube Angle	70.5deg	72deg	72deg	72deg	72deg	72.5deg	72.5deg
Seat Tube Angle	74deg	74deg	73deg	73deg	72deg	72deg	72deg
Head Tube Length	100mm	115mm	135mm	150mm	165mm	180mm	195mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm	68mm	68mm	68mm
Bottom Bracket Height	275mm	275mm	275mm	275mm	275mm	275mm	275mm
Chainstay Length	440mm	440mm	440mm	440mm	440mm	440mm	440mm
Chainstay Length Horizontal	434.7mm	434.7mm	434.7mm	434.7mm	434.7mm	434.7mm	434.7mm
Front-Center	581.3mm	591.2mm	591.2mm	596.2mm	596.2mm	601.1mm	620mm
Front-Center Horizontal	577.3mm	587.3mm	587.3mm	592.3mm	592.3mm	597.3mm	616.3mm
Wheelbase	1012mm	1022mm	1022mm	1027mm	1027mm	1032mm	1051mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm	50mm	50mm
Trail	68.4mm high	58.9mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral	55.7mm mid/neutral	55.7mm mid/neutral
Mechanical Trail	64.5mm	56mm	56mm	56mm	56mm	53.1mm	53.1mm
Wheel Flop	21.5mm	17.3mm	17.3mm	17.3mm	17.3mm	16mm	16mm
Standover Height	686mm	773mm	797mm	814mm	830mm	848mm	869mm
Tire to Pedal Spindle	73.3mm 165 mm cranks	78.2mm 170 mm cranks	78.2mm 170 mm cranks	83.2mm 170 mm cranks	78.2mm 175 mm cranks	83.1mm 175 mm cranks	102mm 175 mm cranks
Pedal Spindle to Ground Clearance	110mm 165 mm cranks	105mm 170 mm cranks	105mm 170 mm cranks	105mm 170 mm cranks	100mm 175 mm cranks	100mm 175 mm cranks	100mm 175 mm cranks

Source:http://www.jamisbikes.com/catalog_archive/09_JAMIS_CATALOG.pdf

Geometry