frame geometry road

Feb 17, 2023

seat tube c-t = seat tube / center - top

ht race = head tube "race" - 1.5 cm sloped top tube, position: more handlebar drop

ht gran fondo = head tube "gran forndo" - 3.5 cm slped top tube, position less handlebar drop

geometry classic: head tube classic, for classic headset with external bearing cups

geometry RS: head tube RS, for integrated headset

the charts are a reference for planning

Casati geometry / as chart
Casati geometry modified / as chart, but custom head tube length and top tube length
customer requested custom geometry

seat tube c-t	top tube	ht race	ht gran fondo	st angle	ht angle	chainstays
48,0	50,5	9,7	12,2	75,3°	71,6°	40,3
49,0	51,0	10,2	12,7	75,0°	71,8°	40,3
50,0	51,5	10,7	13,2	74,8°	72,0°	40,5
51,0	52,0	11,2	13,7	74,8°	72,0°	40,5
52,0	53,0	11,7	14,2	74,5°	72,3°	40,5
53,0	53,5	12,2	14,7	74,3°	70,3°	40,5
54,0	54,5	12,7	15,2	74,3°	72,5°	40,5
55,0	55,0	13,2	15,7	74,0°	72,5°	40,8
56,0	55,5	14,2	16,7	74,0°	72,5°	40,8
57,0	56,0	15,2	17,7	73,8°	72,8°	40,8
58,0	56,5	16,2	18,7	73,8°	72,8°	40,8
59,0	57,0	17,2	19,7	73,5°	72,8°	40,8
60,0	57,5	17,7	20,2	73,3°	73,0°	40,8
61,0	58,5	18,7	21,2	73,3°	73,0°	41,0
62,0	58,5	19,2	21,7	73,0°	73.0°	41,0
63,0	59,0	19,7	22,2	73,0°	73,0°	41,0

seat tube c-t	top tube	ht race	ht gran fondo	st angle	ht angle	chainstays
48,0	50,5	11,0	13,5	75,3°	71,6°	40,3
49,0	51,0	11,5	14,0	75,0°	71,8°	40,3
50,0	51,5	12,0	14,5	74,8°	72,0°	40,5
51,0	52,0	12,5	15,0	74,8°	72,0°	40,5
52,0	53,0	13,0	15,5	74,5°	72,3°	40,5
53,0	53,5	13,5	16,0	74,3°	72,3°	40,5
54,0	54,5	14,0	16,5	74,3°	72,5°	40,5
55,0	55,0	14,5	17,0	74,0°	72,5°	40,8
56,0	55,5	15,5	18,0	74,0°	72,5°	40,8
57,0	56,0	16,5	19,0	73,8°	72,8°	40,8
58,0	56,5	17,5	20,0	73,8°	72,8°	40,8
59,0	57,0	18,5	21,0	73,5°	72,8°	40,8
60,0	57,5	19,0	21,5	73,3°	73,0°	40,8
61,0	58,5	20,0	22,5	73,3°	73,0°	41,0
62,0	58,5	20,5	23,0	73,0°	73,0°	41,0
63,0	59,0	21,0	23,5	73,0°	73,0°	41,0