Not as much as you might think.  VoCs aren't great for the the lungs, but at least they don't accumulate like lead does.

I DD’d a NB in San Antonio, Tx for nearly 10yrs.   One of the most important changes I made to the car was installing an aftermarket airhorn.  It wasn’t one of the train-horns but was significantly louder than even regular car horns and it kept me from being run into I can’t count how many times.  Whether it was a…

Beechcraft Bonanza. I grew up in one of those. (I’m the one on the wing)

Thanks, Cap’n Obvious ;->

GA aircraft don’t inherently need 100LL, but the manufacturers chose stick with the leaded fuel because they didn’t need to change.  If there was a decision to outlaw 100LL in 5 years, you can be pretty sure that there would be STCs to modify existing engines to tolerate 93 octane auto gas.  It might cut horsepower a…

You know what more likely have saved his bacon beyond an obnoxious horn?

All of them work towards a goal of allowing most of the 230,000 planes in the sky to fly, but do so running on fuel without lead. That solution has yet to be found.

You wouldn’t be the first person to no longer afford your hobby, you wouldn’t be the last.

Just tax that leaded gas to death, and outright ban it a decade from now. That will increase the demand for an unleaded alternative very quickly and the free market will take care of it. Problem solved.

I drove a small car for several years. The horn and the cars handling saved me more than once. I avoided at least 1-2 accidents a month between the two. When I switched to a larger vehicle because of life (kids, dogs etc), I went from avoiding 1-2 accidents a week to maybe 1-2 a year.

The ARE several compression-ignition engines available for small aircraft, and they have been available for a decade or more. In fact, they are becoming popular in Europe (where 100LL is heavily taxed). As far as I know they all run on Jet A, which is more readily available AND is cheaper.

“Meep horn” is about right. The stock one in my MR2 (since retired in favour of twin air horns) was similar - it sounded like an asthmatic roadrunner.

Amongst the Miata community, an upgraded horn is pretty much in the top 3 of necessary upgrades for first-time buyers. The stock horn sucks. You don’t have to be near an inattentive jacked-up truck driver either. I fear inattentive seniors in their Buicks just as much. And Mom’s in their Santa Fe’s. The Miata is below…

I’m in a stock height Fiat 500 Abarth, and have almost been run over by people in stock height trucks.

Hell, my stock height B8 S4 has had the same thing happen with stock height trucks. Modern trucks and SUVs are simply too big, and have far too many blind spots.

Got backed into at a light back when I had a NB, suffice to say the stock horn didn’t garner much attention.

I went out cycling today. (No engine; a real pedal cycle). I stopped at a red light in a touristy town, behind a Harley Davidson. The Harley made the obligatory loud, uneven, irritating blub-blub-bub noises. Whilst waiting at the red light he revved it from time to time, for some reason that was vitally important to…

I drove small cars for a while. You have to know how the human brain/ eye works.

I have a 2020 Mini Clubman, it’s lowered a couple inches, but just so there’s only about a half inch of wheel gap. So it’s not slammed, it’s not a ‘small’ car in the traditional sense, but I’ve almost been hit 3 times by idiots in lifted trucks that don’t even look when changing lanes. I’m glad I have front and rear…

I have some Hella high/lows on my Miata and its definitely prevented at least a couple accidents. Mostly lifted trucks merging or changing lanes and not looking. A train horn might be overkill, but the Hellas are loud enough to hear at least.

Loud Horns Save Lives.