2021 Bearclaw Bicycle Co. Frank Base

Design
Flat Bar, Rigid, suspension corrected
Frame
Titanium
Fork
Titanium
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

S
M
L
XL
Stack
593mm
611.3mm
625.5mm
639.6mm
Reach
394.9mm
414.1mm
439.4mm
465mm
Stack to Reach Ratio
1.5:1
1.48:1
1.42:1
1.38:1
Seat Tube Length, Unknown
381mm
440mm
480mm
530mm
Top Tube Length, Effective/Horizontal Unknown
570mm
600.2mm
630mm
660mm
Top Tube Slope
24.4deg
19.3deg
16deg
12.1deg
Head Tube Angle
69.5deg
70.5deg
70.5deg
70.5deg
Seat Tube Angle
73.5deg
73deg
73deg
73deg
Head Tube Length
120mm
135mm
150mm
170mm
Bottom Bracket Drop
60mm
60mm
60mm
60mm
Bottom Bracket Height
341.4mm
341.4mm
341.4mm
341.4mm
Chainstay Length
463mm
463mm
463mm
463mm
Chainstay Length Horizontal
459.1mm
459.1mm
459.1mm
459.1mm
Front-Center
643.5mm
659.3mm
689.9mm
720.8mm
Front-Center Horizontal
640.7mm
656.6mm
687.3mm
718.3mm
Wheelbase
1099.8mm
1115.7mm
1146.4mm
1177.4mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
Fork Length, Unknown
468mm
468mm
468mm
468mm
Trail
102mm
very high
94.4mm
very high
94.4mm
very high
94.4mm
very high
Mechanical Trail
95.6mm
89mm
89mm
89mm
Wheel Flop
33.5mm
29.7mm
29.7mm
29.7mm
Tire to Pedal Spindle
77.1mm
165 mm cranks
87.9mm
170 mm cranks
118.5mm
170 mm cranks
149.4mm
170 mm cranks
Pedal Spindle to Ground Clearance
176.4mm
165 mm cranks
171.4mm
170 mm cranks
171.4mm
170 mm cranks
171.4mm
170 mm cranks

Base Build

S
M
L
XL
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
4.8in
4.8in
4.8in
4.8in
Tire Outer Diameter
802.8mm
802.8mm
802.8mm
802.8mm
Bike Length with Tires
1902.6mm
1918.5mm
1949.2mm
1980.2mm
Crank Length
165mm
170mm
170mm
170mm
Handlebar Width
680mm
700mm
720mm
740mm
Stem Length
60mm
70mm
80mm
90mm

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
Rigid Fatbike
Source:https://bearclawbicycleco.com/frank-titanium-fat-bike/