Type R - Motion Ratio?

  1. BlueFalcon

    BlueFalcon Member

    Joined:
    Nov 6, 2019
    Posts:
    48
    Thanked:
    2
    Location:
    MD
    Car(s):
    2019 ABM CTR
    Hi all,

    I did a quick search for calculated motion ratio for the 17+ Type R, but didn't find anything posted. Anyone taken the measurements? It's below freezing and I've got about 3 inches of snow on the ground- so I can't say that I'm crazy about crawling underneath the car to take measurements right this minute...

    Any help appreciated!
     
  2. OP
    OP
    BlueFalcon

    BlueFalcon Member

    Joined:
    Nov 6, 2019
    Posts:
    48
    Thanked:
    2
    Location:
    MD
    Car(s):
    2019 ABM CTR
  3. alpinefd

    alpinefd Member

    Joined:
    Jan 5, 2020
    Posts:
    32
    Thanked:
    3
    Location:
    Walnut
    Car(s):
    2019 Civic Type-R
    hks provides the motion ratio in their coilover tech info page (it's very generous of them to share these accurate data on most of the newer setups, shows how much testing they do with an actual car)

    https://www.hks-power.co.jp/en/product_db/hipermax/db/20316

    front is 1
    rear is 1.34 spring, 0.93 (damper), they use the installation ratio format
    use 1 divide by their # to get the motion ratio

    intresting the rear damper motion ratio is actually larger than 1, i guess it travels in a more straight arc then the wheel.
    upload_2020-1-7_23-2-32.png
     
    BlueFalcon thanked this.
  4. OP
    OP
    BlueFalcon

    BlueFalcon Member

    Joined:
    Nov 6, 2019
    Posts:
    48
    Thanked:
    2
    Location:
    MD
    Car(s):
    2019 ABM CTR
    This is great info, thanks very much!
     
  5. OP
    OP
    BlueFalcon

    BlueFalcon Member

    Joined:
    Nov 6, 2019
    Posts:
    48
    Thanked:
    2
    Location:
    MD
    Car(s):
    2019 ABM CTR
    I want to keep it under 2hz, as it's still a street-driven car.

    If anyone feels like sharing, I'd be interested in hearing about other member's choice in spring rate, based on actual calculation, what it's primarily used for (track, autox, etc.), and any experiences with said setup.
     
Loading...

Share This Page

Loading...