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  • Geometry help required! I'm considering moving from this, size M...

    [code] S(44) M(48) L(52) XL(56)
    A Head Angle (°) 72 72.5 73 73.5
    B Head Tube Length (mm) 125 145 165 190
    C Effective Top Tube Horizontal (mm) 530 547 570 590
    D Seat Angle (°) 74 73.5 73 72.5
    E Seat Tube Length Centre to top(mm) 440 480 520 560
    F Chainstay Length (mm) 408 408 408 408
    G BB Drop (mm) 68 68 68 68
    H Standover Height (mm) 720 740 775 780
    I Stack (mm) 523 544 565 590
    J Reach (mm) 379 385 397 405[/code]

    ...to this, size M:

    [code]
    Frame size XS (50) S (53) M (56) L (58)
    A Seat tube length 465 505 537 563
    B Top tube length 525 537 549 566
    C Head tube length 125 138 150 170
    D Head tube angle 72° 72.5° 73.25° 73.25°
    E Seat tube angle 73.5° 73.5° 73.5° 73.5°
    F Chainstay length 410 410 410 410
    G Wheel base 967 975 980 997
    H Stack 534 546 560 579
    I Reach 367 375 383 395
    [/code]

    Everything looks fine except the stack measurements. The new frame has a much larger stack. Will it feel like my bars are level with my chin? Or have I misunderstood how these work?

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