Desert Sasqwatch
Bigfoot Goblin
- Desert Sasqwatch Bigfoot Goblin
Great progress! Can't wait to see how this comes together. 
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V1 Seb's Goblin #454 (2008 SS/TC donor) - Registered
- Sebnuts Well-Known Member
My lower control arms ended up coming in at some wonky angles and bends, so I 3D printed some fixtures to help hold everything where it needed to be.
They have dowels on the bottom side that lock into the fixture table. Worked out pretty well for getting it tacked up.
Unfortunately, the hardware I need to continue still hasn't shipped, so I'm kind of at a stand still until that arrives.
On the plus side, that gives me some time to get a new toy setup -
This is going to make cutting brackets and notching tubes so much more enjoyable!
They have dowels on the bottom side that lock into the fixture table. Worked out pretty well for getting it tacked up.
Unfortunately, the hardware I need to continue still hasn't shipped, so I'm kind of at a stand still until that arrives.
On the plus side, that gives me some time to get a new toy setup -
This is going to make cutting brackets and notching tubes so much more enjoyable!
Attachments
Desert Sasqwatch
Bigfoot Goblin
- Desert Sasqwatch Bigfoot Goblin
Woah, those look like some big tubes and big heims you will be using - almost off-road (sasquatch 
) suspension sized! Are you using weld in tube adapters or going the DF route with threaded tube inserts?
I'm planning to use a step down from those sizes: 1.25/1.0 inch tubes with 3/4 inch high misalignment at the 'ball joint' end and 5/8 and 3/4 inch high misalignment for the frame mounts on the LCA and 1.0 inch tubes with 3/4 inch high misalignment at the 'ball joint' end and 5/8 inch high misalignment for the frame mounts on the UCA. All tubes are 0.095 wall - believe this should be plenty strong for the application.
This photo shows the DF supplied front 1/2 inch heims from the front suspension on the left, with the 5/8 inch high misalignment in the center and the 3/4 inch high misalignment on the right heims - for visual size comparison.
) suspension sized! Are you using weld in tube adapters or going the DF route with threaded tube inserts?I'm planning to use a step down from those sizes: 1.25/1.0 inch tubes with 3/4 inch high misalignment at the 'ball joint' end and 5/8 and 3/4 inch high misalignment for the frame mounts on the LCA and 1.0 inch tubes with 3/4 inch high misalignment at the 'ball joint' end and 5/8 inch high misalignment for the frame mounts on the UCA. All tubes are 0.095 wall - believe this should be plenty strong for the application.
This photo shows the DF supplied front 1/2 inch heims from the front suspension on the left, with the 5/8 inch high misalignment in the center and the 3/4 inch high misalignment on the right heims - for visual size comparison.
- Sebnuts Well-Known Member
My lower control arm is 1-1/4"OD on the main tubes and 1"OD on the little gusset tube. I'll be using threaded weld in tube bungs.Woah, those look like some big tubes and big heims you will be using - almost off-road (sasquatch
I went extra large on the ball joint end heim so I could maintain a full 3/4" diameter on the ball joint shaft while using misalignment spacers. Lots of load in single shear with some bending at this joint, so I didn't want to skimp LOL
- Sebnuts Well-Known Member
I was able to get one side tacked up and assembled to make sure everything was matching up with the design, and I think it's coming together pretty well.
After numerous design attempts, I was unable to come up with an upper control arm that I was happy with that used the stock knuckle, so I ended up going with my original plan to optimize the strut geometry. I was able to hit every design goal I had with this geometry except camber gain, so overall it's still a huge improvement over the stock design.
Sitting at roughly ride height here.
Bump steer can be adjusted by moving the shims around.
I can cycle the entire stroke of the damper without any binding, which is roughly 2.5" in both droop and bump.
Anti-Squat comes in at 80% and Anti-Lift at 50%.
Roll center height moved to 3-1/4"
After numerous design attempts, I was unable to come up with an upper control arm that I was happy with that used the stock knuckle, so I ended up going with my original plan to optimize the strut geometry. I was able to hit every design goal I had with this geometry except camber gain, so overall it's still a huge improvement over the stock design.
Sitting at roughly ride height here.
Bump steer can be adjusted by moving the shims around.
I can cycle the entire stroke of the damper without any binding, which is roughly 2.5" in both droop and bump.
Anti-Squat comes in at 80% and Anti-Lift at 50%.
Roll center height moved to 3-1/4"
SmsDetroit
Goblin Guru
- SmsDetroit Goblin Guru
I can see what the next group buy will be. Lol
- Sebnuts Well-Known Member
lol. If there was enough interest, I have some domestic vendors that I could get reasonable prices and excellent quality on for quantities over 10.
Front end needs to be reconfigured for more travel along with new springs front and rear to take full advantage of the overall setup anyway.
Stay tuned!
- Sebnuts Well-Known Member
I loosely based my targets on the limited information I could find about mid/rear engine production car anti-geometries. The MR2 and Fiero both had around 60% anti-squat. The Porsche Cayman GT4 has a little over 100% anti-squat and 58% anti-lift.
For front anti-dive 25-35% is typical, and I'll be targeting 30%.
Desert Sasqwatch
Bigfoot Goblin
- Desert Sasqwatch Bigfoot Goblin
Desert Sasqwatch
Bigfoot Goblin
- Desert Sasqwatch Bigfoot Goblin
That will get you about 18-20% anti-dive, which is definitely better than almost zero! Post some pics.
Post some pics.- Sebnuts Well-Known Member
I'll be moving mine up about 1-5/16" as well as moving the ball joint mount locations on the knuckle. This will get me 30% anti-dive and move the front roll center height down to the target 1-7/16". With some high misalignment spacers on the knuckles and relocating the lower control arm coilover mount, I should be able to increase the suspension travel to 2" in both bump and droop.
