Trolley for placing precast concrete bridge beams.
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They've been used extensively on the M4 widening/ Westconex project here in Sydney.
Cheers, Billy.
Keeping it simple is complicated.
Until Bee utey returns, heres a bonus photo.
What are these and why did they blow something up?
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O ring seals on the space shuttle?
They do not seal in fuel at low temperatures very well ?
They were on the main liquid tank I think not the shuttle itself.![]()
If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
Yep they were O rings in the solid rocket boosters.
AFAIR the tempetatures were so low the rubber became brittle and didn't seal properly, letting the high temperature and pressure gases out. Crazy how such a seemingly minor item can have such a catastrophic impact.
If bee utey doesn't return soon i think you'll need to step up to the plate Ron
I've run out of ideas so Ron can have it.
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