2022 J.Laverack Bicycles R JACK Disc Race Base

	48	50	52	54	56	58	60	62
Stack	497.4mm	512.1mm	529.8mm	541mm	560.1mm	574.4mm	583.9mm	600mm
Reach	366mm	373mm	378mm	384mm	390mm	396mm	402mm	408mm
Stack to Reach Ratio	1.36:1	1.37:1	1.4:1	1.41:1	1.44:1	1.45:1	1.45:1	1.47:1
Seat Tube Length, C-T	472mm	487mm	505mm	515mm	535mm	540mm	560mm	580mm
Top Tube Length, Effective/Horizontal Center	518.1mm	529.6mm	540mm	549.4mm	561.2mm	571.6mm	580.5mm	580.5mm
Top Tube Length, Actual C-C	505.5mm	515.9mm	525.5mm	532.1mm	546.5mm	554.5mm	565.2mm	576.5mm
Top Tube Slope	5.6deg	6deg	6.3deg	7.9deg	6.1deg	7.3deg	6.2deg	1.4deg
Head Tube Angle	69.5deg	71deg	72deg	72.5deg	72.5deg	72.5deg	72.5deg	73deg
Seat Tube Angle	73deg	73deg	73deg	73deg	73deg	73deg	73deg	73deg
Head Tube Length	105mm	115mm	130mm	140mm	160mm	175mm	185mm	200mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm	68mm	68mm	68mm	68mm
Bottom Bracket Height	271mm	271mm	271mm	271mm	271mm	271mm	271mm	271mm
Chainstay Length	415mm	415mm	415mm	415mm	415mm	415mm	415mm	415mm
Chainstay Length Horizontal	409.4mm	409.4mm	409.4mm	409.4mm	409.4mm	409.4mm	409.4mm	409.4mm
Front-Center	576.5mm	575.4mm	577.3mm	582.2mm	594.1mm	604.6mm	613.5mm	619.4mm
Front-Center Horizontal	572.4mm	571.4mm	573.2mm	578.2mm	590.2mm	600.7mm	609.7mm	615.6mm
Wheelbase	981.8mm	980.8mm	982.6mm	987.6mm	999.6mm	1010.1mm	1019.1mm	1025mm
Fork Offset/Rake	43mm	43mm	43mm	43mm	43mm	43mm	43mm	43mm
Trail	80.8mm very high	71.3mm high	64.9mm mid/neutral	61.8mm mid/neutral	61.8mm mid/neutral	61.8mm mid/neutral	61.8mm mid/neutral	58.7mm mid/neutral
Mechanical Trail	75.7mm	67.4mm	61.8mm	58.9mm	58.9mm	58.9mm	58.9mm	56.1mm
Wheel Flop	26.5mm	21.9mm	19.1mm	17.7mm	17.7mm	17.7mm	17.7mm	16.4mm
Standover Height	718.2mm	732.1mm	749mm	758.9mm	778.4mm	785.7mm	800.4mm	817.8mm
Tire to Pedal Spindle	67.5mm 170 mm cranks	66.4mm 170 mm cranks	68.3mm 170 mm cranks	73.2mm 170 mm cranks	85.1mm 170 mm cranks	95.6mm 170 mm cranks	104.5mm 170 mm cranks	110.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks

	48	50	52	54	56	58	60	62
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
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm	28mm	28mm
Tire Width Max	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1659.8mm	1658.8mm	1660.6mm	1665.6mm	1677.6mm	1688.1mm	1697.1mm	1703mm

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

Performance Road

Source:https://www.jlaverack.co.uk/r-jack-disc-titanium-frameset/#1513255300444-459684ae-ec90

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2022 J.Laverack Bicycles R JACK Disc Race Base

Geometry

Base Build

Stack and Reach vs. Category Trend