2023 Ironbridge 1779 Rohloff

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category
Somewhat upright stack and reachvs category
Very upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category

Geometry

49
47
48
50
51
52
53
54
55
56
57
58
59
60
61
62
Stack
566.4mm
559.8mm
559.8mm
566.4mm
572.9mm
577.7mm
589mm
598.5mm
608mm
613.4mm
623mm
632.5mm
637.1mm
646.6mm
656.1mm
665.7mm
Reach
366.9mm
372.3mm
372.3mm
371.9mm
375.5mm
378.9mm
377.1mm
374mm
375.9mm
385.3mm
387.3mm
394.3mm
402.4mm
404.4mm
406.4mm
409.4mm
Stack to Reach Ratio
1.54:1
1.5:1
1.5:1
1.52:1
1.53:1
1.52:1
1.56:1
1.6:1
1.62:1
1.59:1
1.61:1
1.6:1
1.58:1
1.6:1
1.61:1
1.63:1
Seat Tube Length, C-T
490mm
470mm
480mm
500mm
510mm
520mm
530mm
540mm
550mm
560mm
570mm
580mm
590mm
600mm
610mm
620mm
Top Tube Length, Effective/Horizontal HT Top
525mm
520mm
525mm
530mm
535mm
540mm
545mm
550mm
555mm
565mm
570mm
580mm
590mm
600mm
605mm
610mm
Head Tube Angle
71deg
70.5deg
70.5deg
71deg
71.5deg
71.5deg
72deg
72deg
72deg
72.5deg
72.5deg
72.5deg
72.5deg
72.5deg
72.5deg
72.5deg
Seat Tube Angle
74.5deg
75.5deg
75deg
74.5deg
74.5deg
74deg
74deg
73.5deg
73.5deg
73.5deg
73deg
73deg
73deg
73deg
73deg
73deg
Head Tube Length
105mm
100mm
100mm
105mm
110mm
115mm
125mm
135mm
145mm
155mm
165mm
175mm
185mm
195mm
205mm
215mm
Bottom Bracket Drop
87mm
87mm
87mm
87mm
87mm
87mm
87mm
87mm
87mm
81mm
81mm
81mm
76mm
76mm
76mm
76mm
Bottom Bracket Height
264mm
264mm
264mm
264mm
264mm
264mm
264mm
264mm
264mm
270mm
270mm
270mm
275mm
275mm
275mm
275mm
Chainstay Length
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
450mm
Chainstay Length Horizontal
441.5mm
441.5mm
441.5mm
441.5mm
441.5mm
441.5mm
441.5mm
441.5mm
441.5mm
442.7mm
442.7mm
442.7mm
443.5mm
443.5mm
443.5mm
443.5mm
Front-Center
586mm
593.9mm
593.9mm
590.9mm
591.9mm
596.9mm
593.9mm
593.9mm
598.8mm
605.8mm
610.8mm
620.7mm
631.1mm
636mm
641mm
646.9mm
Front-Center Horizontal
579.5mm
587.5mm
587.5mm
584.5mm
585.5mm
590.5mm
587.5mm
587.5mm
592.5mm
600.4mm
605.4mm
615.4mm
626.5mm
631.5mm
636.5mm
642.5mm
Wheelbase
1021mm
1029mm
1029mm
1026mm
1027mm
1032mm
1029mm
1029mm
1034mm
1043mm
1048mm
1058mm
1070mm
1075mm
1080mm
1086mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
45mm
Fork Length (Axle-To-Crown)
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
Trail
73.3mm
high
76.6mm
high
76.6mm
high
73.3mm
high
70mm
high
70mm
high
66.7mm
high
66.7mm
high
66.7mm
high
63.5mm
mid/​neutral
63.5mm
mid/​neutral
63.5mm
mid/​neutral
63.5mm
mid/​neutral
63.5mm
mid/​neutral
63.5mm
mid/​neutral
63.5mm
mid/​neutral
Mechanical Trail
69.3mm
72.2mm
72.2mm
69.3mm
66.4mm
66.4mm
63.5mm
63.5mm
63.5mm
60.6mm
60.6mm
60.6mm
60.6mm
60.6mm
60.6mm
60.6mm
Wheel Flop
22.6mm
24.1mm
24.1mm
22.6mm
21.1mm
21.1mm
19.6mm
19.6mm
19.6mm
18.2mm
18.2mm
18.2mm
18.2mm
18.2mm
18.2mm
18.2mm
Standover Height
747mm
736mm
741mm
753mm
761mm
767mm
778mm
787mm
797mm
810mm
819mm
828mm
840mm
850mm
859mm
876mm
Tire to Pedal Spindle
65mm
170 mm cranks
72.9mm
170 mm cranks
72.9mm
170 mm cranks
69.9mm
170 mm cranks
70.9mm
170 mm cranks
75.9mm
170 mm cranks
72.9mm
170 mm cranks
72.9mm
170 mm cranks
77.8mm
170 mm cranks
84.8mm
170 mm cranks
89.8mm
170 mm cranks
99.7mm
170 mm cranks
110.1mm
170 mm cranks
115mm
170 mm cranks
120mm
170 mm cranks
125.9mm
170 mm cranks
Pedal Spindle to Ground Clearance
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
100mm
170 mm cranks
100mm
170 mm cranks
100mm
170 mm cranks
105mm
170 mm cranks
105mm
170 mm cranks
105mm
170 mm cranks
105mm
170 mm cranks

Rohloff Build

49
47
48
50
51
52
53
54
55
56
57
58
59
60
61
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
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
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
40mm
Tire Width Max
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
Tire Outer Diameter
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
702mm
Bike Length with Tires
1723mm
1731mm
1731mm
1728mm
1729mm
1734mm
1731mm
1731mm
1736mm
1745mm
1750mm
1760mm
1772mm
1777mm
1782mm
1788mm

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
Sport Touring
Source:https://www.ironbridge-bicycles.co.uk/bicycles/1779-handmade-full-fillet-frame/