Compare: 2018 DENGFU R01 Ultralight 50cm vs 2017 Ridley Bikes Helium X Base XS

Insights

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of DENGFU R01

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Ridley Bikes Helium X

Stack	517mm	526mm +9mm
Reach	381mm	374mm -7mm
Stack to Reach Ratio	1.36:1	1.41:1
Seat Tube Length, C-T	485mm	480mm -5mm
Seat Tube Length, C-C	440mm	440mm +0mm
Top Tube Length, Effective/Horizontal Center	525mm	525mm +0mm
Top Tube Length, Actual C-C	—	509mm
Top Tube Slope	5.6deg	8.5deg +2.9deg
Head Tube Angle	72deg	72deg +0deg
Seat Tube Angle	74.5deg	74deg -0.5deg
Head Tube Length	115mm	127mm +12mm
Bottom Bracket Drop	69mm	68mm -1mm
Bottom Bracket Height	267mm	268mm +1mm
Chainstay Length	405mm	405mm +0mm
Chainstay Length Horizontal	399.1mm	399.3mm +0.2mm
Front-Center	578mm	573.8mm -4.2mm
Front-Center Horizontal	573.9mm	569.8mm -4.1mm
Wheelbase	973mm	969mm -4mm
Fork Offset/Rake	45mm	44.6mm -0.4mm
Fork Length (Axle-To-Crown)	370mm	—
Trail	61.8mm mid/neutral	62.2mm +0.4mm mid/neutral
Mechanical Trail	58.8mm	59.2mm +0.4mm
Wheel Flop	18.2mm	18.3mm +0.1mm
Tire to Pedal Spindle	72mm 170 mm cranks	67.8mm -4.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	98mm +1mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	25mm +0mm
Tire Outer Diameter	672mm	672mm +0mm
Bike Length with Tires	1645mm	1641mm -4mm
Handlebar Width	400mm	—
Stem Length	90mm	—
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Rim	Rim

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://www.dengfubike.com/collections/carbon-bike-frame/products/r01-frame	ridley
Brand	DENGFU	Ridley Bikes
Bike	2018 R01 Ultralight	2017 Helium X Base
Size	50cm	XS
Category	Performance Road	Performance Road