1983 Specialized Bicycles Sequoia Base

	47	51	54	56	58	60	62.5	65	68.5
Stack	511.4mm	528.1mm	556.2mm	574.3mm	591mm	610.2mm	634.3mm	658.3mm	—
Reach	375.9mm	385.8mm	391.3mm	399.5mm	394.9mm	404.4mm	407.5mm	410.6mm	—
Stack to Reach Ratio	1.36:1	1.37:1	1.42:1	1.44:1	1.5:1	1.51:1	1.56:1	1.6:1	—
Seat Tube Length, C-C	470mm	510mm	540mm	560mm	580mm	600mm	625mm	650mm	685mm
Top Tube Length, Effective/Horizontal Center	527.4mm	520mm	537mm	555mm	565mm	580mm	590mm	600mm	—
Top Tube Length, Actual C-C	520mm	520mm	537mm	555mm	565mm	580mm	590mm	600mm	605mm
Top Tube Slope	3deg	0deg	0deg	0deg	0deg	0deg	0deg	0deg	-0.5deg
Head Tube Angle	73.5deg	72deg	72.5deg	72.5deg	73deg	73deg	73deg	73deg	73deg
Seat Tube Angle	73.5deg	76deg	75.5deg	75deg	74deg	74deg	74deg	74deg	74deg
Bottom Bracket Drop	77mm	77.1mm	77.4mm	77.7mm	77.8mm	77.9mm	92.9mm	93.1mm	93.2mm
Bottom Bracket Height	266mm	265.9mm	265.6mm	265.3mm	265.2mm	265.1mm	250.1mm	249.9mm	249.8mm
Chainstay Length	432mm	432mm	432mm	432mm	432mm	432mm	432mm	432mm	432mm
Chainstay Length Horizontal	425.1mm	425.1mm	425mm	425mm	424.9mm	424.9mm	421.9mm	421.9mm	421.8mm
Front-Center	585mm	590mm	600mm	610mm	615mm	620mm	630mm	635mm	640mm
Front-Center Horizontal	579.9mm	584.9mm	595mm	605mm	610.1mm	615.1mm	623.1mm	628.1mm	633.2mm
Wheelbase	1005mm	1010mm	1020mm	1030mm	1035mm	1040mm	1045mm	1050mm	1055mm
Fork Offset/Rake	51mm	51mm	47mm	47mm	45mm	45mm	45mm	45mm	45mm
Trail	48.4mm mid/neutral	57.8mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral	57.8mm mid/neutral	57.8mm mid/neutral	57.8mm mid/neutral	57.8mm mid/neutral	57.8mm mid/neutral
Mechanical Trail	46.4mm	55mm	56.1mm	56.1mm	55.3mm	55.3mm	55.3mm	55.3mm	55.3mm
Wheel Flop	13.2mm	17mm	16.9mm	16.9mm	16.2mm	16.2mm	16.2mm	16.2mm	16.2mm
Tire to Pedal Spindle	72mm 170 mm cranks	77mm 170 mm cranks	87mm 170 mm cranks	97mm 170 mm cranks	102mm 170 mm cranks	107mm 170 mm cranks	117mm 170 mm cranks	122mm 170 mm cranks	127mm 170 mm cranks
Pedal Spindle to Ground Clearance	96mm 170 mm cranks	95.9mm 170 mm cranks	95.6mm 170 mm cranks	95.3mm 170 mm cranks	95.2mm 170 mm cranks	95.1mm 170 mm cranks	80.1mm 170 mm cranks	79.9mm 170 mm cranks	79.8mm 170 mm cranks

	47	51	54	56	58	60	62.5	65	68.5
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Width Max	38mm	38mm	38mm	38mm	38mm	38mm	38mm	38mm	38mm
Tire Outer Diameter	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm
Bike Length with Tires	1691mm	1696mm	1706mm	1716mm	1721mm	1726mm	1731mm	1736mm	1741mm

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

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Source:http://crankbased.blogspot.com/2015/01/1983-specialized-expedition.html

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1983 Specialized Bicycles Sequoia Base

Geometry

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Stack and Reach vs. Category Trend