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  1. wirralways

    tyre conicity - I want to understand how this is measured

    Thanks Greg, The link is excellent and the very fact you have clarified conicity as the lfidr puts the light bulb on
  2. wirralways

    tyre conicity - I want to understand how this is measured

    I understand some of the theory behind this but I'm struggling to understand how it is measured and calculated. i am told that you measure the tyres lateral force in both directions of rotation which should give you a + and a -ve value. Then you average these to get the conicity. i.e +350 and...
  3. wirralways

    How does castor trail relate to pneumatic trail ?

    tried to find the sae paper but drew a blank. is the number correct. i've been told that the springs in the struts could be giving a force around the king pin axis when they are compressed is this likely ???
  4. wirralways

    How does castor trail relate to pneumatic trail ?

    Can I assume that the castor trail and pneumatic trail add up or are they independant ? I would agree that the castor trail is geometric but it will change slightly with compliance. We define pull/drift in 2 ways firstly the time to move a specific distance on a cambered road after we have...
  5. wirralways

    How does castor trail relate to pneumatic trail ?

    I'M TRYING TO UNDERSTAND HOW CASTOR TRAIL AND PUEMATIC TRAIL COMBINE/CHANGE WITH VEHICLE SPEED AND HOW THEY WILL EFFECT VEHICLE PULL IN COMBINATION WITH CAMBER AND CASTOR SIDE TO SIDE VARIATIONS.

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