If done correctly soldering brazing and welding are plenty strong for a roll cage.
Rc roll cage diy.
Beyond this there are 10 12 and 14 point designs that provide more structural integrity.
If you go brass go with 3 16 tubing from msc.
The bars shown in blue are optional.
Part 1 overview teardown.
Here is video with strength test of brazed aluminum.
How to build a team chase roll cage duration.
First you said you need plans and know what materials now you say you know how to build it but dont know what materials to use.
New mini rc drift build converting a model car to rc.
Here is the video of me brazing an aluminum roll cage for my project of a trophy truck.
An 8 point roll cage is the most basic and therefore probably the best option if this is your first build.
The basic 4 point roll bar consists of a main hoop behind the driver two rear struts and an optional cross brace on the main hoop should you need it or the rules.
They have the best brass tubign i have found.
If you go steel get 3 16 brakeline.