Docol R8 Tubing in Motorsports Chassis

[H80N]

Docol R8 is gaining in popularity... thoughts...??

TIG welding chromoly and Docol R8 chassis with Miller Dynasty 210 DX

Andy Weyenberg and Jack Elam of J&J Auto Racing walk through the settings required to TIG weld a chromoly chassis and a Docol R8 chassis, explaining the differences in the heat sensitivity of the two materials. They discuss proper technique for welding tubing, and the importance of proper fit-up and fixturing in this application.

https://www.youtube.com/watch?v=J6klXSIqPmM&index=2&list=PLg00-ciWQ88J66A-lilYUjuOeURlGBNbe

Here is some background info

http://www.ssab.us/globaldata/news-center/2016/01/18/08/06/racing-into-the-future-with-docol-tubing

[H80N]

Looks like VERY cool stuff....

characteristics & fracture resistance much better than 4130 while retaining the same strength and weight...

here is a thread on the YB with some good info and links

http://www.yellowbullet.com/forum/showthread.php?t=603829

[JamesM3M5]

I remember seeing their stuff at PRI back when it was in Orlando. As far as my typical application - rollcages for factory tubs - doesn't really gain anything for me. But if I were to build anything tube frame, I'd use it over 4130. They had samples of crushed tubing - across the diameter, and buckling under axial load, and the deformation without cracking was impressive. Building for strength is great, but you do need deformable sections in the event of a bad impact.

[H80N]

Bending Docol R8 Tube for Cages

https://www.youtube.com/watch?v=0enwhMXvfZ4