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Wouldn't it be cheaper to limit manufacturers from producing needlessly loud vehicles? We _know_ we can do it, but we _still_ allow idiotic V8 trucks, 2500kg SU

Wouldn't it be cheaper to limit manufacturers from producing needlessly loud vehicles? We _know_ we can do it, but we _still_ allow idiotic V8 trucks, 2500kg SUVs with double turbos, Harley Davidsons that are _designed_ to be as loud as possible. Stop making so much noise!

deleted 3y ago
[deleted]
ricardobayes 3y ago
The most noisy ones imo are the dirt bikes with no mufflers. Those can be heard from miles away. Or those 50cc scooters young lads ride on.
- bigfudge 3y ago
  Bikes with no mufflers are already breaking the law. We should actually enforce those laws
serf 3y ago
a bit of humor here for me : both bigger engines and turbos generally reduce noise pollution when compared to the other design choices available for that power envelope. the loudest engine? a small literage non-turbo high compression motor of some sort. the most famously loud race-car , the mazda 787b, had a 2.6 liter naturally aspirated motor. Small literage, small package, rotary. Fairly high compression. It deafened drivers. turbochargers can be made to be annoying by enthusiasts, sure -- but that energy they produce is in large part thanks to the damping effect of the energy scavenging that they enable. and as for engine size, as literage increases an engine developer has to do less to get the power they need -- that means they can use long and heavily dampened mufflers/exhaust systems, lower compression, lower RPM, less noise . Again, yes -- enthusiasts can ruin this, but the larger majority of these big motors are quieter/smoother than their counterparts that must go to extremes to meet the same power criteria.
- bigfudge 3y ago
  This might be true for a fixed power output. But as you acknowledge, idiots (enthusiasts) means larger engines =more noise. That said, We don’t have to specify the means to reduce noise … just set the limit and let people comply how they want. But a large engine is a probably dead weight given the range of reasonable speeds in residential areas or off of a motorway.
lm28469 3y ago
From about 30kph up the rolling noise is higher than the engine noise of most cars. That's why teslas and other huge electric cars are actually quite loud (huge tires + heavy weight)
- giantg2 3y ago
  I haven't noticed any additional road noise from Teslas compared to any other full size cars. Did they do a study on that?
  - lostlogin 3y ago
    > full size car That’s the thing - they are huge. Compare them to cars from the last few decades and the size increase epidemic becomes very clear.
    - giantg2 3y ago
      That's not my experience at all. Full size cars have continuously shrunk since the 1960s at least. What you might be referring to is the increase in choice of larger vehicles, or that weights have generally increased due to safety improvements. But the actual size of full size cars has certainly not gone up over the past few decades. You can compare the older crown vic to the newer taurus. They are both full size cars. The newer taurus is about 100lbs heavier, 1-2" taller and wider, and about 10-11" shorter including a shorter wheelbase. I highly doubt Tesla has any noticeably higher road noise than other full size cars. The tires are going to be the bigger culprit than weight/size if we're staying in the same size category (full size cars).
      - lostlogin 3y ago
        > That's not my experience at all. Full size cars have continuously shrunk since the 1960s at least. You might be right that people are choosing larger vehicles, but wouldn’t that mean the average size is increasing? When you look at cars with a long lineage (eg Golf) they are huge compared to what they used to be, however maybe this varies region to region or it’s just my bias.
asylteltine 3y ago
I’ll do you one better. We should limit cars and have everyone ride motorcycles. You don’t need a 6000 pound pickup truck to drive to Starbucks, Jim. You aren’t a contractor. Look at Europe they have 80% motorcycles and otherwise small hatchbacks. Very very few large cars. That’s step one.

deleted 3y ago

[deleted]

ricardobayes 3y ago

The most noisy ones imo are the dirt bikes with no mufflers. Those can be heard from miles away. Or those 50cc scooters young lads ride on.

bigfudge 3y ago
Bikes with no mufflers are already breaking the law. We should actually enforce those laws

serf 3y ago

a bit of humor here for me : both bigger engines and turbos generally reduce noise pollution when compared to the other design choices available for that power envelope. the loudest engine? a small literage non-turbo high compression motor of some sort. the most famously loud race-car , the mazda 787b, had a 2.6 liter naturally aspirated motor. Small literage, small package, rotary. Fairly high compression. It deafened drivers. turbochargers can be made to be annoying by enthusiasts, sure -- but that energy they produce is in large part thanks to the damping effect of the energy scavenging that they enable. and as for engine size, as literage increases an engine developer has to do less to get the power they need -- that means they can use long and heavily dampened mufflers/exhaust systems, lower compression, lower RPM, less noise . Again, yes -- enthusiasts can ruin this, but the larger majority of these big motors are quieter/smoother than their counterparts that must go to extremes to meet the same power criteria.

bigfudge 3y ago
This might be true for a fixed power output. But as you acknowledge, idiots (enthusiasts) means larger engines =more noise. That said, We don’t have to specify the means to reduce noise … just set the limit and let people comply how they want. But a large engine is a probably dead weight given the range of reasonable speeds in residential areas or off of a motorway.

lm28469 3y ago

From about 30kph up the rolling noise is higher than the engine noise of most cars. That's why teslas and other huge electric cars are actually quite loud (huge tires + heavy weight)

giantg2 3y ago
I haven't noticed any additional road noise from Teslas compared to any other full size cars. Did they do a study on that?
- lostlogin 3y ago
  > full size car That’s the thing - they are huge. Compare them to cars from the last few decades and the size increase epidemic becomes very clear.
  - giantg2 3y ago
    That's not my experience at all. Full size cars have continuously shrunk since the 1960s at least. What you might be referring to is the increase in choice of larger vehicles, or that weights have generally increased due to safety improvements. But the actual size of full size cars has certainly not gone up over the past few decades. You can compare the older crown vic to the newer taurus. They are both full size cars. The newer taurus is about 100lbs heavier, 1-2" taller and wider, and about 10-11" shorter including a shorter wheelbase. I highly doubt Tesla has any noticeably higher road noise than other full size cars. The tires are going to be the bigger culprit than weight/size if we're staying in the same size category (full size cars).
    - lostlogin 3y ago
      > That's not my experience at all. Full size cars have continuously shrunk since the 1960s at least. You might be right that people are choosing larger vehicles, but wouldn’t that mean the average size is increasing? When you look at cars with a long lineage (eg Golf) they are huge compared to what they used to be, however maybe this varies region to region or it’s just my bias.

asylteltine 3y ago

I’ll do you one better. We should limit cars and have everyone ride motorcycles. You don’t need a 6000 pound pickup truck to drive to Starbucks, Jim. You aren’t a contractor. Look at Europe they have 80% motorcycles and otherwise small hatchbacks. Very very few large cars. That’s step one.