1989 Ritchey Design Outback Base

	16	17	18.5	20	21.5	23
Stack	389mm	413.3mm	449.8mm	486.2mm	522.6mm	559.1mm
Reach	413.5mm	418.8mm	420.3mm	421.9mm	423.5mm	425mm
Stack to Reach Ratio	0.94:1	0.99:1	1.07:1	1.15:1	1.23:1	1.32:1
Seat Tube Length, C-T	406.4mm	431.8mm	469.9mm	508mm	546.1mm	584.2mm
Top Tube Length, Effective/Horizontal Center	533.4mm	546.1mm	558.8mm	571.5mm	584.2mm	596.9mm
Top Tube Length, Actual C-C	533.4mm	546.1mm	558.8mm	571.5mm	584.2mm	596.9mm
Top Tube Slope	0deg	0deg	0deg	0deg	0deg	0deg
Head Tube Angle	71.5deg	71.5deg	71.5deg	71.5deg	71.5deg	71.5deg
Seat Tube Angle	73deg	73deg	73deg	73deg	73deg	73deg
Bottom Bracket Drop	35.7mm	35.7mm	35.7mm	35.7mm	35.7mm	35.7mm
Bottom Bracket Height	292.1mm	292.1mm	292.1mm	292.1mm	292.1mm	292.1mm
Chainstay Length	434.3mm	434.3mm	434.3mm	434.3mm	434.3mm	434.3mm
Chainstay Length Horizontal	432.9mm	432.9mm	432.9mm	432.9mm	432.9mm	432.9mm
Front-Center	584.2mm	596.9mm	609.6mm	622.3mm	634.9mm	647.6mm
Front-Center Horizontal	583.1mm	595.8mm	608.5mm	621.2mm	633.9mm	646.6mm
Wheelbase	1016mm	1028.7mm	1041.4mm	1054.1mm	1066.8mm	1079.5mm
Fork Offset/Rake	45.7mm	45.7mm	45.7mm	45.7mm	45.7mm	45.7mm
Trail	61.5mm mid/neutral	61.5mm mid/neutral	61.5mm mid/neutral	61.5mm mid/neutral	61.5mm mid/neutral	61.5mm mid/neutral
Mechanical Trail	58.3mm	58.3mm	58.3mm	58.3mm	58.3mm	58.3mm
Wheel Flop	18.5mm	18.5mm	18.5mm	18.5mm	18.5mm	18.5mm
Tire to Pedal Spindle	86.5mm 170 mm cranks	99.1mm 170 mm cranks	111.8mm 170 mm cranks	124.5mm 170 mm cranks	137.2mm 170 mm cranks	149.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	122.1mm 170 mm cranks	122.1mm 170 mm cranks	122.1mm 170 mm cranks	122.1mm 170 mm cranks	122.1mm 170 mm cranks	122.1mm 170 mm cranks

	16	17	18.5	20	21.5	23
Wheel Size	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD
Tire Width	1.9in	1.9in	1.9in	1.9in	1.9in	1.9in
Tire Outer Diameter	655.5mm	655.5mm	655.5mm	655.5mm	655.5mm	655.5mm
Bike Length with Tires	1671.5mm	1684.2mm	1696.9mm	1709.6mm	1722.3mm	1735mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale

Category Trend

Rigid MTB

Source:https://ritchey.vintagebicycledatabase.com/catalogs/ritchey/1989/ritchey1989_06.jpg

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1989 Ritchey Design Outback Base

Geometry

Base Build

Stack and Reach vs. Category Trend