Triangulated Four Link Upper Bar Placement

I've got the upper bar brackets ready to tack in place. Here are a few things to keep in mind...

[@sarblade]

Hi, nice explanation, I was wondering what angle you decided upon for this? Looks like a bit over 20 degrees.

[@scttrchln]

How did you weld the bracket to the pumpkin? Did you preheat or do anything special? How is it different than welding to the tubes?

[@welderseries]

It’s not a cast housing, so I didn’t do anything special. Thanks!

[@R0yL33]

would you put the control arm up higher on the pumpkin if you were concerned with wheel-hop ?

[@welderseries]

Roy, that would give more leverage to keep the rear end from rotating but there are more factors producing wheel hop. The tires and tire pressure can also be a major issue. Thanks for asking. Paul Horton

[@ninja63639]

How do your 4 links and bushings hold up on a daily driver putting about 10,000 miles or so a year on?

[@welderseries]

Our parts are designed for drivers. We've got about 50k miles on the '32 since 2009. It's been across the country on a 6000 mile road trip, so it's fair to say our parts hold up fine :). The truck in the video has only been on the road for a summer, but I pulled a Scotty camper to Louisville (about a 1200 mile trip) and Syracuse (about a 600 mile trip), plus daily driving around town and wherever I needed to go. We use Energy Suspension bushings. Thanks for asking!

[@jerrylittle2726]

You should of welded an outer plate making it a box frame and stiffin up the frame with bolts going through

[@4speed3pedals]

What grade steel did you use for the 4 link brackets? What is the thickness?

[@welderseries]

The lower four link frame brackets, axle tabs, and axle brackets are 3/16" pickled & oiled 50W mild steel. The formed upper four link frame brackets and lower formed bar brackets are the same material, except 10 ga. All our parts are made from this material.

[@cigarcaptain]

cool

[@heidenfelderkustoms1502]

I noticed the lower bar was set parallel to the ground. Is this optimal for handling? I have my S10 frame level and reared at ride height. It’s a triangulated four link. I understand the bars should be parallel but do I need to put any upward angle on them for roll center to improve the handling?

[@welderseries]

The lower bar set horizontal at ride height is a good setup for a street car. On a triangulated four link, the upper bars aren't parallel with the lower bars- GM geometry has them lower at the front, which is how we set them up as well. Thanks for your note.

[@davecozzi9721]

Did you make sure both bolts were 0 degrees horizontal so when the frame moves vertically the bar does not bind? Looks like you did but, it was not mentioned in the narrative.

[@welderseries]

That's a good point, and I agree - I should have mentioned that in the video!

[@ManishKumar-jm3go]

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