Thanks for the feedback guys... here's where I am so far.. (I don't have CAD, so I'm designing by generalities and space limitations at this point)
Rear LCAs (and axles) are parallel to the ground at ride height; LCAs are 6.5" long.. (I'm married to this short length as demanded by packaging)...
Tires are not very wide (6" at contact patch; there's really no room to go bigger, and I won't flare the car, so 6" is it; 155-70-13).. car will weigh about 850/900lbs.. suspension will be on the stiff side (this is more go-kart than Cadillac
).. total suspension travel will be dictated by CV range and/or body clearances (likely 3-4" max; 5" would surprise me)..
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*** What I'm gleaning from the comments here is the rear UCAs need a 'slight' downhill-toward-the-pumpkin rake; 5-ish degrees?... -- (for what it's worth, my front UCAs are at 10 degrees, but I can of course alter that if needed)... And also, because my travel arc is so tiny, maybe I build the rear UCAs to be only slightly shorter than the rear lowers? Thought being not to introduce too much camber at bump.. (again, for what it's worth, my front UCAs are 2/3 the length of my front LCAs)
**This car's strength will be it's power-to-weight (maybe 7.5-ish:1) and it's overall lightness (sub 1K).. I'm not designing it to be a competitive race car, but instead a fun street legal play car (that won't embarrass me with poor handling on it's occasional track/autocross day).. I wish I was better versed in suspension theory, but I get lost quickly in all of the variables.. I appreciate your help as I try to design around all of the compromises..
--ccrunner
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Dean
1972 Honda N600 Restomod "ccrunner's N600 VFR800 repower"
1963 Volvo P1800 Restomod
http://locostusa.com/forums/viewtopic.php?f=36&t=163091959 Berkeley SE492 Restomod...
viewtopic.php?f=36&t=19397"ccrunner's 1960 MGA coupe Restomod" found on MGExp.com