1986 Ritchey Design Commando Base

	17	17	18	19	20	21.5	23	24	25
Stack	433.5mm	433.5mm	457.8mm	482mm	506.3mm	542.8mm	579.2mm	603.5mm	627.8mm
Reach	372.9mm	411mm	416.3mm	408.9mm	414.2mm	415.7mm	417.3mm	422.5mm	427.8mm
Stack to Reach Ratio	1.16:1	1.05:1	1.1:1	1.18:1	1.22:1	1.31:1	1.39:1	1.43:1	1.47:1
Seat Tube Length, C-C	419.1mm	419.1mm	444.5mm	469.9mm	495.3mm	533.4mm	571.5mm	596.9mm	622.3mm
Top Tube Length, Effective/Horizontal Center	508mm	546.1mm	558.8mm	558.8mm	571.5mm	584.2mm	596.9mm	609.6mm	622.3mm
Top Tube Length, Actual C-C	508mm	546.1mm	558.8mm	558.8mm	571.5mm	584.2mm	596.9mm	609.6mm	622.3mm
Top Tube Slope	0deg	0deg	0deg	0deg	0deg	0deg	0deg	0deg	0deg
Head Tube Angle	69deg	69deg	69deg	69deg	69deg	69deg	69deg	69deg	69deg
Seat Tube Angle	73deg	73deg	73deg	73deg	73deg	73deg	73deg	73deg	73deg
Bottom Bracket Drop	9.7mm	35.7mm	35.7mm	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	292.1mm	292.1mm	292.1mm
Chainstay Length	431.8mm	442mm	442mm	442mm	442mm	442mm	442mm	442mm	442mm
Chainstay Length Horizontal	431.7mm	440.5mm	440.5mm	440.5mm	440.5mm	440.5mm	440.5mm	440.5mm	440.5mm
Front-Center	589.5mm	622.2mm	634.9mm	634.9mm	647.6mm	660.3mm	673mm	685.6mm	698.3mm
Front-Center Horizontal	589.4mm	621.2mm	633.9mm	633.9mm	646.6mm	659.3mm	672mm	684.7mm	697.4mm
Wheelbase	1021.1mm	1061.7mm	1074.4mm	1074.4mm	1087.1mm	1099.8mm	1112.5mm	1125.2mm	1137.9mm
Fork Offset/Rake	50.8mm	50.8mm	50.8mm	50.8mm	50.8mm	50.8mm	50.8mm	50.8mm	50.8mm
Trail	61.4mm mid/neutral	71.4mm high	71.4mm high	71.4mm high	71.4mm high	71.4mm high	71.4mm high	71.4mm high	71.4mm high
Mechanical Trail	57.3mm	66.7mm	66.7mm	66.7mm	66.7mm	66.7mm	66.7mm	66.7mm	66.7mm
Wheel Flop	20.6mm	23.9mm	23.9mm	23.9mm	23.9mm	23.9mm	23.9mm	23.9mm	23.9mm
Tire to Pedal Spindle	117.7mm 170 mm cranks	124.5mm 170 mm cranks	137.1mm 170 mm cranks	137.1mm 170 mm cranks	149.8mm 170 mm cranks	162.5mm 170 mm cranks	175.2mm 170 mm cranks	187.9mm 170 mm cranks	200.6mm 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	122.1mm 170 mm cranks	122.1mm 170 mm cranks	122.1mm 170 mm cranks

	17	17	18	19	20	21.5	23	24	25
Wheel Size	24 in 507 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	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	1.9in	1.9in	1.9in
Tire Outer Diameter	603.5mm	655.5mm	655.5mm	655.5mm	655.5mm	655.5mm	655.5mm	655.5mm	655.5mm
Bike Length with Tires	1624.6mm	1717.2mm	1729.9mm	1729.9mm	1742.6mm	1755.3mm	1768mm	1780.7mm	1793.4mm

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/1986/

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1986 Ritchey Design Commando Base

Geometry

Base Build

Stack and Reach vs. Category Trend