1991 Merlin Metalworks Mountain Base

	13	15.0	17	19	21
Stack	486.8mm	494.9mm	515.7mm	545.1mm	547mm
Reach	385.9mm	409.3mm	423.6mm	427mm	453.8mm
Stack to Reach Ratio	1.26:1	1.21:1	1.22:1	1.28:1	1.21:1
Seat Tube Length, Effective Center	406.4mm	469.9mm	508mm	546.1mm	584.2mm
Top Tube Length, Actual C-C	520.7mm	558.8mm	584.2mm	584.2mm	622.3mm
Head Tube Angle	70deg	70.5deg	71deg	71.5deg	72deg
Seat Tube Angle	73.5deg	73.5deg	73deg	72.5deg	72deg
Head Tube Length	85.9mm	95.3mm	120.7mm	152.4mm	152.4mm
Bottom Bracket Drop	40.7mm	38.2mm	33.1mm	30.6mm	30.6mm
Bottom Bracket Height	292.1mm	294.6mm	299.7mm	302.3mm	302.3mm
Chainstay Length	425.5mm	425.5mm	425.5mm	425.5mm	425.5mm
Chainstay Length Horizontal	423.5mm	423.7mm	424.2mm	424.4mm	424.4mm
Front-Center	596.4mm	618.9mm	637.2mm	646.2mm	668.6mm
Front-Center Horizontal	595.1mm	617.7mm	636.3mm	645.5mm	667.9mm
Wheelbase	1018.5mm	1041.4mm	1060.5mm	1069.8mm	1092.2mm
Fork Offset/Rake	44mm	44mm	44mm	44mm	44mm
Fork Length (Axle-To-Crown)	387.3mm	387.3mm	387.3mm	387.3mm	387.3mm
Trail	74.3mm high	71.2mm high	68.1mm high	65mm mid/neutral	61.9mm mid/neutral
Mechanical Trail	69.8mm	67.1mm	64.4mm	61.6mm	58.9mm
Wheel Flop	23.9mm	22.4mm	21mm	19.6mm	18.2mm
Standover Height	679.5mm	704.9mm	730.3mm	803.4mm	828.8mm
Tire to Pedal Spindle	93.6mm 170 mm cranks	116mm 170 mm cranks	134.3mm 170 mm cranks	143.4mm 170 mm cranks	165.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	122.1mm 170 mm cranks	124.6mm 170 mm cranks	129.7mm 170 mm cranks	132.3mm 170 mm cranks	132.3mm 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:https://merlintitanium.com/images/merlin/misc/merlin_1991_catalog_specs.pdf

Geometry