1989 Diamondback Bicycles Ascent Base

Geometry

15
17
19
20.5
22.5
Seat Tube Length, Unknown
15mm
17mm
19mm
20.5mm
22.5mm
Top Tube Length, Effective/Horizontal Unknown
539mm
548mm
563mm
570mm
590mm
Head Tube Angle
70deg
70deg
70deg
70deg
70deg
Seat Tube Angle
73deg
73deg
73deg
73deg
73deg
Bottom Bracket Drop
29.5mm
29.5mm
29.5mm
29.5mm
29.5mm
Bottom Bracket Height
300mm
300mm
300mm
300mm
300mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
429mm
429mm
429mm
429mm
429mm
Front-Center
609.7mm
609.7mm
627.7mm
639.7mm
660.7mm
Front-Center Horizontal
609mm
609mm
627mm
639mm
660mm
Wheelbase
1038mm
1038mm
1056mm
1068mm
1089mm
Fork Offset/Rake
50mm
45mm
45mm
45mm
45mm
Trail
66.7mm
high
72mm
high
72mm
high
72mm
high
72mm
high
Mechanical Trail
62.7mm
67.7mm
67.7mm
67.7mm
67.7mm
Wheel Flop
21.4mm
23.2mm
23.2mm
23.2mm
23.2mm
Tire to Pedal Spindle
110.2mm
170 mm cranks
110.2mm
170 mm cranks
128.2mm
170 mm cranks
140.2mm
170 mm cranks
161.2mm
170 mm cranks
Pedal Spindle to Ground Clearance
130mm
170 mm cranks
130mm
170 mm cranks
130mm
170 mm cranks
130mm
170 mm cranks
130mm
170 mm cranks

Base Build

15
17
19
20.5
22.5
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
50mm
50mm
50mm
50mm
50mm
Tire Outer Diameter
659mm
659mm
659mm
659mm
659mm
Bike Length with Tires
1697mm
1697mm
1715mm
1727mm
1748mm
Source:https://www.retrobike.co.uk/gallery2/d/60225-2/Ascent.jpg