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Originally Posted by Chrislong
Is there a name for each link so they can be identified?
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Probably, just use words like forward, side, rear,.. etc.
Quote:
Originally Posted by Chrislong
if the two on each side (drag link upper and lower?) are unequal length, then that would mean antisquat could increase or decrease through suspension travel, same as if the 2 links were not mounted parallel.
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Anti-squat decreases in bump regardless of link length being unequal or not. It's the same as with roll centres: they shift as the car leans in turns, if you change link positions, they just shift a little more or a little less, or earlier or later, or further or... you know.
Quote:
Originally Posted by Chrislong
Then with the lower two wishbone links on each side, if these are unequal in length, or not mounted parallel, then the toe in will increase or decrease through suspension travel.
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Indeed. Decreasing toe during compression is bad, I know that from previous experiments. Don't know about the opposite. This is also called 'roll steer', and it's generally regarded as a very, very bad thing, either way. But I kept the B4 geometry for those.
Quote:
Originally Posted by Chrislong
Then the top link, we all know what that does, camber change through suspension travel.
Then beyond that, with the movement of one factor, means other tie rods are twisting and so other factors become changeable through suspension travel even if not intended to be.
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The forward and side links are close to perpendicular (on my car, not in the wiki animation), so they don't influence each other too much. It was hard getting the top side link parallel to the 'wishbone' link, because it's far from it on a standard B4. The spur is in the way.
Quote:
Originally Posted by Chrislong
But with all this, id be completely lost. On paper it may mean a perfect setup can be acheived, but do we live long enough to find it practically? Seriously though.
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There aren't that many options really. I kept the B4 geometry (which is good) and just added side links. And because the shock attaches to the lower side link and I didn't want to have to make a new shock tower or use a different shock length, the pickup points and length of that link were more or less determined as well. And the top side link had to be about the same length. In the end, there are not many variables left.
Quote:
Originally Posted by Chrislong
Will you be running something like this at Belgium? I am intrigued by this, and impressed with your engineering and bravery mate.
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Running the 5-link at the GP? There's a fine line between bravery and foolishness! Let's say I don't know which side I'm on yet :-) Going from a nice mid-motor car back to B4, now that's foolishness, so I'd have to make a 5-link for the S2. But the S2 has the shocks behind the CVD's, so the shocks would have to attach to the rearmost lower 'wishbone' link instead of the side (drag) link. And that means it won't have the B4 shock geometry :-/