<<<<<update 3-6-07>>>>>>
NOW TAKING ORDERS! http://www.sr20forum.com/showpost.ph...&postcount=103
3/7/07
2 sets paid for :
-SentraDragon
-rex
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only 4 left
i've been working on designing front lower control arms for the b13
it's gonna be something like this
my design parameters are:
safety first - this leads to alot of the design decisions
use factory mounting points
no modifications to the spindle
adjustable at the balljoint to correct geometry
equal or less weight than factory
$350 price range
the biggest obstacle was the balljoint. nissan uses a 9* taper, not common in american race products. i was hoping to use an inexpensive off the shelf unit, but no luck. i have decided to use a screw-in setup and offer a few options.
1) off the shelf ball joint (reaming of the spindle required) drops the balljoint about 1"
2) adjustable monoball (reaming of the spindle required) drops the balljoint about 0"- 1.5" (std) or 1" - 2" (extended)
3) adjustable monoball (with custom ground stud no reaming required) drops the balljoint about 0" - 1.5" (std) or 1" - 2" (extended)
there are pro's and con's for any option, notably:
1) ots balljoints are cheap $15-$25
reamers are $75-$100 to diy or $20-$50(est) for a shop to do it
once you ream the spindle, there's no going back without replacing it
2) adjustable
$100 additional cost
reamers are $75-$100 to diy or $20-$50(est) for a shop to do it
once you ream the spindle, there's no going back without replacing it
3) adjustable
$150 additional cost
no reaming required
easy bolt up install
i believe this is the best way to go. it offers the flexability to serve daily drivers, autocrossers, weekend warriors and racers.
they will mount as factory and come equiped with superpro bushings (castor increasing or std bushings). and be compatable with stock or avaiable aftermarket swaybars.
construction will be similar to the drawing consisting of 1" steel tubing and 3/16" plate
i could build some camber, caster and trackwidth into them, but i want to keep them daily driver friendly. (someone else would need to figure this out for me)
pricing would start at $299 (w/ ots balljoints) and increase as outlined above.
i'm hoping to to have a working prototype built in 4-6 weeks
-chuck
