2019 Author Ronin SL

	500	520	540	560	580
Stack	563mm	581mm	600mm	623mm	645mm
Reach	374mm	378mm	382mm	390mm	392mm
Stack to Reach Ratio	1.51:1	1.54:1	1.57:1	1.6:1	1.65:1
Seat Tube Length, C-T	500mm	520mm	540mm	560mm	580mm
Seat Tube Length, C-C	460mm	480mm	500mm	520mm	540mm
Top Tube Length, Effective/Horizontal HT Top	530mm	545mm	560mm	580mm	595mm
Top Tube Length, Actual C-C	515mm	523mm	542mm	560mm	573mm
Top Tube Slope	9.1deg	8.9deg	8.7deg	9deg	9.2deg
Head Tube Angle	70.5deg	71deg	71deg	71.5deg	72deg
Seat Tube Angle	74.5deg	74deg	73.5deg	73deg	72.5deg
Head Tube Length	120mm	140mm	160mm	180mm	200mm
Bottom Bracket Drop	70mm	70mm	69mm	68mm	68mm
Bottom Bracket Height	281mm	281mm	282mm	283mm	283mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.2mm	419.2mm	419.4mm	419.5mm	419.5mm
Front-Center	599.9mm	605.9mm	616.5mm	626.2mm	630.2mm
Front-Center Horizontal	595.8mm	601.8mm	612.6mm	622.5mm	626.5mm
Wheelbase	1015mm	1021mm	1032mm	1042mm	1046mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	404mm	408mm	408mm	404mm	404mm
Trail	76.6mm high	73.3mm high	73.3mm high	70mm high	66.7mm high
Mechanical Trail	72.2mm	69.3mm	69.3mm	66.4mm	63.5mm
Wheel Flop	24.1mm	22.6mm	22.6mm	21.1mm	19.6mm
Tire to Pedal Spindle	78.9mm 170 mm cranks	84.9mm 170 mm cranks	95.5mm 170 mm cranks	105.2mm 170 mm cranks	109.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	111mm 170 mm cranks	112mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks

Published Sizing Recommendations

Height

160 cm

170 cm

168 cm

178 cm

176 cm

188 cm

186 cm

195 cm

193 cm

205 cm

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:https://en.author.eu/adventure/gravel-bike/author-ronin-2019-ua42913002-6404#!geometrie-modelu