2021 Thorn Cycles Nomad MK3 Drop Bar CyclingAbout Estimates

	50S	52S	55S	58S	61S
Stack	524mm	542mm	572mm	599mm	622mm
Reach	385mm	385mm	380mm	387mm	389mm
Stack to Reach Ratio	1.36:1	1.41:1	1.51:1	1.55:1	1.6:1
Seat Tube Length, C-C	445mm	475mm	515mm	550mm	585mm
Top Tube Length, Effective/Horizontal Center	535mm	545mm	555mm	570mm	585mm
Head Tube Angle	69deg	69.5deg	70deg	71deg	71.5deg
Seat Tube Angle	74deg	73.5deg	73deg	73deg	72.5deg
Head Tube Length	105mm	127mm	154mm	182mm	211mm
Bottom Bracket Drop	55mm	50mm	50mm	45mm	40mm
Bottom Bracket Height	297mm	302mm	302mm	307mm	312mm
Chainstay Length	435mm	441mm	447mm	453mm	459mm
Chainstay Length Horizontal	431.5mm	438.2mm	444.2mm	450.8mm	457.3mm
Front-Center	631.7mm	635mm	635.8mm	635.4mm	635.6mm
Front-Center Horizontal	629.3mm	633mm	633.8mm	633.8mm	634.4mm
Wheelbase	1060.8mm	1071.2mm	1078mm	1084.6mm	1091.6mm
Fork Offset/Rake	60mm	60mm	60mm	53mm	48mm
Fork Length (Axle-To-Crown)	410mm	410mm	410mm	410mm	410mm
Trail	70.9mm high	67.6mm high	64.3mm mid/neutral	65.2mm high	67.2mm high
Mechanical Trail	66.2mm	63.3mm	60.4mm	61.6mm	63.7mm
Wheel Flop	23.7mm	22.2mm	20.7mm	20.1mm	20.2mm
Tire to Pedal Spindle	109.7mm 170 mm cranks	113mm 170 mm cranks	113.8mm 170 mm cranks	113.4mm 170 mm cranks	113.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	127mm 170 mm cranks	132mm 170 mm cranks	132mm 170 mm cranks	137mm 170 mm cranks	142mm 170 mm cranks

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.

Category Trend

Source:CyclingAbout.com has estimated the stack, reach and head tube angle (95%+ accuracy)

Geometry