Re: Roll Cage tips
I'm sure you'd have a tough time getting NASCAR, USAC, SCCA or other proffessional associations to use sprinkler pipe.
The study - by the same "educated?" people that say off-roading, roads in forests, mining, foresting, oil drilling, producing energy, and vehicles in general are endagering our environment?
Or are they same "educated" lawyers that think "Hot Coffee" shouldn't be served hot?
Water pipe will work if the structure design is correct. I just don't like the potential shattering or splitting. The difference in strengths can be made up with better design. But that means even more weight -- to save what, $10?
Put a small hunk of water pipe in a hydraulic press - push on it sideways, watch it split. Push on it lengthwise, splits again.
Now try that with ERW or DOM. They bend, buckle, deform, but don't fly apart.
Yes, I've done it.
Put a hunk of ERW in a manual bender, give it a good bend. Now do the same with DOM, about a 50% harder pull.
Now bend it back - the ERW bends back - harder than it was, but it does.
Bend back the DOM - even harder.
Now acid etch both - see the stress cracks on the DOM?
Since the DOM has already been cold bent (drawn) once it's ahead of the ERW in becoming crystalized.
Now bend the ERW again - stress cracks - but it's the 3rd bend, not the second.
But it's your life - or your kid's.