Eric's Extended Radius Arms

[Yeller]

Also breaking from fatigue desert racing is a whole other can o worms, think having a crash 1000 times an hour, those cars get abused.

And I’ll stop, although great discussion I think we’re reaching the point of hijacking the OP

 

[EricLar80]

Not surprisingly, it looks like all of those broke at the weld. Design, weld process, prep, and skill of the operator makes a huge difference. Mine will be double-pass TIG welded to help avoid issues.

 

[EricLar80]

I was able to buy a set of grade 9 bolts for the end caps from Grainger for $4.20 total. They are trying to clearance their inventory; they are normally $4.50 for each bolt.
https://grainger.com/product/1WER4

 

[NicksTrix]

that's a great deal on the hardware! i'd suggest getting the rest of what you will need while the sale is on.

 

[68ford]

The syle of the axle end looks cool but I can't help but think the cost of any radius arms could be drastically reduced by eliminating the c bushings, which are a pain in the ass anyway. Me and my buddy built my arms with more desert racing in mind and I'm full width so my arms around straight. Basically 2 bushings per side at the front. Weld on 4 plates and pic your caster. Could leave the c bushing wedges there if you wanted.

 

[68ford]

https://www.instagram.com/p/4sko1qRdSB/?utm_source=ig_share_sheet&igshid=64dj4yhu4i75

 

[EricLar80]

Oh, it would definitely be cheaper... but I am already past purchasing materials. lol

How well would it flex without using heims?

 

[68ford]

Oh, it would definitely be cheaper... but I am already past purchasing materials. lol

How well would it flex without using heims?

Mine have 1 1/4 heims at the frame end and the other end have 2 bushings in place of the c bushing. Flexes about the same as a c bushing set up.
https://www.instagram.com/p/BI0QbxsD7yA/?utm_source=ig_share_sheet&igshid=6t3ha0ht6hmd

 

[mcdiaz]

EricLar80 sir I was wondering if you ever finished the arms I am very intrested?

 

[Howard2x4x4]

EricLar80 sir I was wondering if you ever finished the arms I am very intrested?

Yes, what he said. I am interested also. Pics? Thanks. Howard in beautiful West Michigan

 

[Howard2x4x4]

Any updates on this?

 

[lars]

On a tangent. I recently removed the extended radius arms I built and installed 15 years ago. Not gonna go into the tech of my design since this is Eric's thread, but for the curious, I put almost 100,000 miles on the Johnny Joints. Beat the $hit out of them in that time, as my fellow travelers can attest. I used the version that is about 2-5/8" across the flats and uses a 9/16" bolt, 1.25-12 threads on the joint shank. They were as tight and solid as when installed. I was surprised. If I didn't have a new set on hand, I would've cleaned them up and returned them to service. I have never gotten that kind of service life from any spherical rod end type of joint elsewhere, regardless of size and application.