2022 J.Laverack Bicycles R J.ACK Disc Classic Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Titanium
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

48
50
52
54
56
58
60
62
Stack
509.6mm
520.7mm
541.4mm
560.4mm
569.9mm
586mm
600.3mm
611.7mm
Reach
358mm
364mm
370mm
376mm
382mm
388mm
394mm
400mm
Stack to Reach Ratio
1.42:1
1.43:1
1.46:1
1.49:1
1.49:1
1.51:1
1.52:1
1.53:1
Seat Tube Length, C-T
480mm
500mm
515mm
530mm
545mm
560mm
575mm
595mm
Top Tube Length, Effective/Horizontal Center
513.8mm
523.2mm
535.5mm
547.3mm
556.2mm
567.2mm
577.5mm
587mm
Top Tube Length, Actual C-C
499.6mm
510.4mm
521.1mm
532.1mm
541.9mm
552.2mm
562.5mm
573.2mm
Top Tube Slope
6.6deg
5.6deg
6.3deg
6.6deg
6deg
6.2deg
6.1deg
5.3deg
Head Tube Angle
70.5deg
71deg
71.5deg
71.5deg
71.5deg
72deg
72deg
72.5deg
Seat Tube Angle
73deg
73deg
73deg
73deg
73deg
73deg
73deg
73deg
Head Tube Length
110mm
120mm
140mm
160mm
170mm
185mm
200mm
210mm
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
566.2mm
571.5mm
579.9mm
592.1mm
601.2mm
607.4mm
618mm
622.3mm
Front-Center Horizontal
562.1mm
567.5mm
575.9mm
588.2mm
597.4mm
603.6mm
614.3mm
618.6mm
Wheelbase
971.5mm
976.9mm
985.3mm
997.6mm
1006.8mm
1013mm
1023.7mm
1028mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
Trail
72.3mm
high
69.1mm
high
66mm
high
66mm
high
66mm
high
62.8mm
mid/​neutral
62.8mm
mid/​neutral
59.7mm
mid/​neutral
Mechanical Trail
68.2mm
65.4mm
62.6mm
62.6mm
62.6mm
59.8mm
59.8mm
56.9mm
Wheel Flop
22.8mm
21.3mm
19.9mm
19.9mm
19.9mm
18.5mm
18.5mm
17.1mm
Standover Height
728.5mm
743mm
759.6mm
775mm
786.8mm
801.3mm
815.2mm
830.8mm
Tire to Pedal Spindle
57.2mm
170 mm cranks
62.5mm
170 mm cranks
70.9mm
170 mm cranks
83.1mm
170 mm cranks
92.2mm
170 mm cranks
98.4mm
170 mm cranks
109mm
170 mm cranks
113.3mm
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

Base Build

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
1649.5mm
1654.9mm
1663.3mm
1675.6mm
1684.8mm
1691mm
1701.7mm
1706mm

Stack and Reach vs. Category Trend

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