1992 Koga Randonneur Extra Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Rim brake
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Average stack and reachvs category
Very upright stack and reachvs category

Geometry

50 cm
54 cm
57 cm
60 cm
63 cm
66 cm
Stack
477.1mm
515.5mm
555mm
572.8mm
601.4mm
630mm
Reach
388.3mm
386.8mm
390mm
399.1mm
390.1mm
381mm
Stack to Reach Ratio
1.23:1
1.33:1
1.42:1
1.44:1
1.54:1
1.65:1
Seat Tube Length, C-T
500mm
540mm
570mm
600mm
630mm
660mm
Top Tube Length, Effective/Horizontal Center
540mm
550mm
580mm
580mm
580mm
Top Tube Length, Actual C-C
540mm
550mm
565mm
580mm
580mm
580mm
Top Tube Slope
0deg
0deg
1.2deg
0deg
0deg
0deg
Head Tube Angle
70.5deg
71.5deg
72deg
72deg
72deg
72deg
Seat Tube Angle
72.5deg
72.5deg
72.5deg
72.5deg
72.5deg
72.5deg
Head Tube Length
125mm
Bottom Bracket Drop
40mm
60mm
65mm
65mm
65mm
65mm
Bottom Bracket Height
303mm
283mm
278mm
278mm
278mm
278mm
Chainstay Length
450mm
450mm
450mm
450mm
450mm
450mm
Chainstay Length Horizontal
448.2mm
446mm
445.3mm
445.3mm
445.3mm
445.3mm
Front-Center
604mm
596mm
605mm
620mm
621mm
621mm
Front-Center Horizontal
602.8mm
593mm
601.7mm
616.7mm
616.7mm
617.7mm
Wheelbase
1051mm
1039mm
1047mm
1062mm
1062mm
1063mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
50mm
50mm
Trail
68.4mm
high
62mm
mid/​neutral
58.9mm
mid/​neutral
58.9mm
mid/​neutral
58.9mm
mid/​neutral
58.9mm
mid/​neutral
Mechanical Trail
64.5mm
58.8mm
56mm
56mm
56mm
56mm
Wheel Flop
21.5mm
18.7mm
17.3mm
17.3mm
17.3mm
17.3mm
Tire to Pedal Spindle
91mm
170 mm cranks
83mm
170 mm cranks
92mm
170 mm cranks
107mm
170 mm cranks
108mm
170 mm cranks
108mm
170 mm cranks
Pedal Spindle to Ground Clearance
133mm
170 mm cranks
113mm
170 mm cranks
108mm
170 mm cranks
108mm
170 mm cranks
108mm
170 mm cranks
108mm
170 mm cranks

Base Build

50 cm
54 cm
57 cm
60 cm
63 cm
66 cm
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
Tire Width
32mm
32mm
32mm
32mm
32mm
32mm
Tire Width Max
37mm
37mm
37mm
37mm
37mm
37mm
Tire Outer Diameter
686mm
686mm
686mm
686mm
686mm
686mm
Bike Length with Tires
1737mm
1725mm
1733mm
1748mm
1748mm
1749mm

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.rennrad-news.de/forum/attachments/km-1992-techdat-randonneur-pdf.391063/