4 ms·
Sure? I mean we can’t remove lead everywhere all at once but taking them out of pipes is better than nothing right?
by zht 3y ago
Sure? I mean we can’t remove lead everywhere all at once but taking them out of pipes is better than nothing right?
- pseg134 3y ago[flagged]
- wanderingmind 3y agoWhy do you want to rip out pipes before banning small/private jets?
- AlgorithmicTime 3y agoJets don’t use leaded aviation gas.
- keep_reading 3y agoAlso came here to point out that celebrities aren't traveling the world in these cheap slow planes ...
- paulcole 3y agoYeah I think the original commenter wanted to drum up support for their idea by also blaming movie stars and CEOs (kind of like shooting fish in a barrel on HN).
- denton-scratch 3y agoJets? I thought lead was added to fuel to prevent "pinking", which is the pre-ignition of fuel in the cylinders of a piston engine. Why does jet fuel need lead?
- kedikedi 3y agoI think you’re right. Leaded additive is an octane enhancer to prevent knocking but it’s also good for valve seats and whatnot. That’s the bit what makes it difficult to just switch to other octane enhancers as far as I know.
- denton-scratch 3y agoSuggested explanation: jet fuel doesn't need added tetraethyl lead. But aviation fuel is standardized; it's convenient to use the same fuel for jet planes and planes with piston-engines, so that airstrips don't have to store more than one kind of fuel.
- tass 3y agoJet fuel and avgas are kept carefully separate and are incompatible - Jet fuel has no added lead. Most piston aircraft use avgas (usually leaded) though some use jet fuel (diesel powered). Larger propellers are usually powered by turbines burning jet fuel.
- denton-scratch 3y agoThanks for clarifying!
- deleted 3y ago[deleted]
- SonicScrub 3y agoLeaded AvGas is the fuel for piston powered aircraft. Typically your small, general aviation propeller aircraft. Not jets. They burn JetA (kerosene).
- notahacker 3y agoPresumably because having lead in drinking water is more likely to be a source of lead poisoning than background AvGas emissions from the small piston powered aircraft at the nearby flight training school
- jdietrich 3y agoMetallic lead has very low bioavailability. Lead compounds - particularly organolead compounds like tetraethyllead - are vastly more toxic. Replacing lead pipes is a good idea, but it should be a scandal that leaded avgas is still legal.
- spacecadet 3y agowhy not do both in parallel, ban the fucking planes AND restore the pipes. Are you OK?