Hi Guest!
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but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
The E-type IRS unit project for my '73 Opel GT is in it's last stages - for attachment to the monocoque anyway; and since the rest of the car is already built around it, there's only one variable that has yet to be decided on for more or less Anti-Squat (of course, I want more):
Set the axes of rotation of the lower control arms to be level or otherwise with the longitudinal centerline of the car....
For the orientation of the lower control arms, I'm referencing the "flat" bottoms of their mounts to the differential case; and for the length of the car, I'm referencing the rocker panels - where they bend to form the door-sills. Both seem proper to me.
I wonder if anyone here has experience with orienting the good-old E-type IRS unit for greater anti-squat. Obviously the relevant dimensions of the E-type it was designed for and my Opel GT are not the same, but the relation to the approximate "Instant Center" (side view Instant Center of Zero velocity) is half of the equation for the percent of Anti-Squat; so given that there is only a bit of room to play with in positioning the IRS sub-frame relative to my GT's chassis, I'm sure I could take advantage of whatever has been experienced with this unit in it's E-type.
Set the axes of rotation of the lower control arms to be level or otherwise with the longitudinal centerline of the car....
For the orientation of the lower control arms, I'm referencing the "flat" bottoms of their mounts to the differential case; and for the length of the car, I'm referencing the rocker panels - where they bend to form the door-sills. Both seem proper to me.
I wonder if anyone here has experience with orienting the good-old E-type IRS unit for greater anti-squat. Obviously the relevant dimensions of the E-type it was designed for and my Opel GT are not the same, but the relation to the approximate "Instant Center" (side view Instant Center of Zero velocity) is half of the equation for the percent of Anti-Squat; so given that there is only a bit of room to play with in positioning the IRS sub-frame relative to my GT's chassis, I'm sure I could take advantage of whatever has been experienced with this unit in it's E-type.
