AMA drafts model on-highway motorcycle sound legislation

(Originally posted as /archives/4408 from a 2009-09-28 American Motorcyclist Association Press Release)

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© 2014-05-23, Paul Danger Kile, All Rights Reserved

 

September 28, 2009

The AMA has developed model legislation for use by cities seeking a simple, consistent and economical way to deal with sound complaints related to on-highway motorcycles within the larger context of excessive sound from all sources.

The model legislation offers an objective method for municipal jurisdictions to evaluate motorcycle sound through science-based measurement. It’s based on the Society of Automotive Engineers’ (SAE) new J2825 standard, “Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles.” The AMA produced similar model legislation for off-highway motorcycles several years ago.

“Many cities and other jurisdictions already have excessive sound laws on the books, but when they get citizen complaints about loud motorcycles, they sometimes decide to single out the riding public with unfair or overly restrictive ordinances and laws,” said Imre Szauter, AMA government affairs manager. “We believe that motorcycles shouldn’t be singled out, but should be regulated as part of a comprehensive sound management policy that also addresses cars, trucks, leaf blowers, generators and other sources of excessive sound.”

The J2825 standard, issued by the SAE in May, is based on a comprehensive study of a wide variety of on-highway motorcycles. It establishes instrumentation, test site, test conditions, procedures, measurements and sound level limits.

“Too many times, jurisdictions responding to citizen complaints about excessive motorcycle sound create laws that simply don’t work in the real world,” Szauter said. “They either set an unreasonable decibel limit, leave it up to a police officer to subjectively decide whether a bike is too noisy, or come up with another plan that is arbitrary or unworkable. Our model legislation is objective, workable and fair.”

The model legislation adopts the SAE J2825 standard for stationary on-highway motorcycle sound testing, specifies the type of sound meter to be used, and allows for each city to specify the penalties for violating the law. Szauter stressed, however, that the sound-testing procedures and decibel limits established in the SAE J2825 standard should remain unchanged to ensure that the law remains objective and fair.

Under the SAE J2825 standard, decibel limits range from 92 dBA at idle for all motorcycles, to up to 100 dBA at certain RPMs for various motorcycles, depending on the type of engine.

In 2003, the AMA organized the National Summit on Motorcycle Sound to bring together riders and user organizations, representatives of the motorcycle manufacturers, the aftermarket industry, racing promoters, government agencies, law enforcement and others to develop proposals regarding the increasingly controversial issue of excessive motorcycle sound. The creation of a new on-highway motorcycle sound measurement procedure was a top recommendation of the summit’s Motorcycle Sound Working Group.

“The motorcycling community, local governments and police officers have sought a practical sound field test for streetbikes for many years, and now it exists, thanks to a collaboration between the Motorcycle Industry Council and the SAE,” Szauter said. “The next step is for jurisdictions struggling with motorcycle sound complaints to adopt fair and objective laws, and the AMA is providing the tool for them to do that.”

Szauter encourages motorcyclists and government and law enforcement officials to download the model legislation from the Rights section of this website.

Note from dangerismymiddlename.com: We did not find the model legislation.  We did however find these resources there:

  1. http://www.amadirectlink.com/legisltn/positions/sound.asp
  2. http://www.amadirectlink.com/news/2005/soundsummit.asp
  3. Appendix B (of http://www.amadirectlink.com/news/2005/soundsummit.asp). (“SAE J1287 Measurement of Exhaust Sound Levels of Stationary Motorcycles”) doesn’t appear in the electronic version of Sound Advice. To order a copy of SAE J1287, contact the Society of Automotive Engineers at 877-606-7323 or visit www.sae.org.
  4. Appendix C (of http://www.amadirectlink.com/news/2005/soundsummit.asp)(“AMA Position on Motorcycle Sound” ) as of May 14, 2005. For the current AMA position statement on motorcycle sound, visit www.amadirectlink.com/legisltn/positions/noise.asp.
  5. For the latest information on engine test speed data for stationary sound testing, see the Motorcycle Industry Council downloads page.

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F4U Corsair – P51 Mustang – B29 Bomber

(Original post date: 2016-08-30.)

B29 P51 F4U - noise removal - dynamic cont

Click here to purchase image.

CAF Heart of America Wing 2015 Airshow

From Commemorative Air Force

P51 Mustang “Gunfighter”  (details for this exact aircraft)
B29 Superfortress “Fifi” (details for this exact aircraft)

From Cavanaugh Flight Museum

F4U Corsair (details for this exact aircraft)

 

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Roland MT-32 Resources

How to install munt:

Other Related Synth Stuff

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Theo Jansen’s Strandbeest

What are Strandbeest?

(Originally published on 2016/08/31.)

Theo Jansen invented the strandbeest. He describes them as “new forms of life” that “live their own lives“. That’s not accurate though. These aren’t alive by any scientific definition of the word.

Most of the strandbeest leg-bones share the same relative lengths. Mr Jansen calls these ratios “the holy numbers“. Trying every possible combination of ratios was an intractable problem, so Mr Jansen used an evolutionary approach, with a computer simulation, to get to the optimal ratios in a reasonable amount of time. 

There are many full-sized, strandbeest videos, but I am only going to post one here:

 

The remaining links will be to smaller strandbeest that you-too can own.

I Built My Own Strandbeest

I have three kits. I finished the first one (minus the propeller). Here are Adam Savage’s builds of the same three kits:

All three kits are available from multiple sources, at a wide range of prices. The Amazon.com links (below), are some of the more affordable versions.

Kit #1

My first build was a scale working model of Animaris Ordis Parvus. It’s the Vol. 30 Gakken kit. You can find it here:

Here’s another version of Animaris Ordis Parvus. This one is in English:

Kit #2

The second kit is Gakken’s “Biped Walking Robot”. It comes as a Japanese “mook” (model+book):

Kit #3

The third kit is Gakken’s scale model of Animaris Rhinoceros Parvus. The English edition is branded as “Jr. Scientist”, but it’s actually the Gakken kit:

Hexbug’s Motorized, Steerable, Strandbeest

Hexbug sells two sizes of strandbeest. They are four legged versions similar-to Animaris Ordis Parvus. They go forwards, backwards, and turn. They do this by using two motors and crankshafts instead of one.

The Animaris Ordis Parvus Gakken kit’s crankshaft is actually split-able in the center, so one could potentially create something like these from that kit.

Here is the larger version, called Vex Robotics Strandbeast XL, which is a kit:

Here is the smaller version, called Hexbug Tarantula, which is pre-built:

Lego Strandbeests

Jason Allemann from JK Brickworks has created a Lego steerable strandbeest. It’s web page is here.

Jason shares step-by-step PDF instructions on how to build the legs here.

This is my favorite Lego steerable strandbeest. It’s Lego Ideas page is here. Unfortunately Lego will not be releasing this as a kit.

Here’s a Lego version of Theo Jansen’s Animaris Rhinoceros Parvus. It’s Lego Ideas page is here. Unfortunately Lego will not be releasing this as a kit.

Here is OSchoe’s Mindstorms Lego steerable strandbeest. It’s web page is here.

 

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Total FAWDOT

(Originally written on 2015-05-08 as /archives/7136)

Here is an image of Eno L. Camino getting FAWDOT. I am in “good company”, apparently.

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Kay took a photo of me playing an exciting game of Destiny (online multiplayer). I fell asleep, and woke up, six times. I have no idea what the other players thought I was doing.

Last week I was totally FAWDOT (falling asleep while doing other things). I cannot drive when I get this way:

  • I fell asleep while sitting: repeatedly.
  • I fell asleep while standing.
  • I fell asleep while playing video games.

Gary gets totally FAWDOT here. Yes, I actually fell asleep there. (And yes, I realize that the comic is actually a restroom pun, but I find my humor where I find it.)

I have systemic exertion intolerance disorder/ myalgic encephalomyelitis / chronic fatigue syndrome (pick a name, pick an abbreviation: SEID/ME/CFS).

Kay again: what a joker.
Kay again: what a joker.

This is a rebuttal to some myths:

  • Please don’t say, “At least you get to sleep.” I am just as tired when I wake up. Do you want to know what I really want to do? I want to be a computer programmer. I did that for 20 years, but I can no longer do that.
  • Some people don’t believe that it exists, because they can’t see it. People can’t see headaches either, but they believe in them, because headaches are so common that most of us have had one. “I can’t see it, so it doesn’t exist” is a misuse of Occam’s Razor.
  • It is not only fatigue. Imagine having the flu, while being drunk, and staying awake for two days, and you will have an idea of what this is like. Yes, there are good days, and there are bad days, but my good days still require 16 hours of sleep. The bad days require twenty hours.
  • It is serious: “CDC studies show that CFS can be as disabling as multiple sclerosis, lupus, rheumatoid arthritis, heart disease, end-stage renal disease, chronic obstructive pulmonary disease (COPD), and similar chronic conditions.”
  • It is not, or not only, caused by mononucleosis. A person with ME/CFS can usually tell you exactly what viral infection preceded their condition. The answer is different for different people.
  • It is not depression. A person with ME will tell you what they would be doing (kayaking, photography, riding motorcycles) if they could. People that are depressed don’t have that “positive” (for lack of a better word) outlook. That said: a person can have both.
  • It is not only seen in women. 20% of people with ME/CFS are men.
  • There is no known cure.
  • It is not the “yuppie disease”. “This term was popularized in a November 1990 Newsweek cover story… It reflects a stereotype that CFS mainly affects yuppies, and implies that it is a form of burnout. The phrase is considered offensive by patients and clinicians.
  • It is not a new, made-up, diagnosis. It has also been known as (from here, here, and here.):
    • Neurasthenia (as early as 1829)
    • Chronic Epstein-Barr virus syndrome
    • Chronic mononucleosis
    • Low natural killer syndrome
    • Atypical poliomyelitis
    • Tapanui flu
    • Royal Free disease
    • Epidemic neuromyasthenia
    • Post-viral illness
    • Florence Nightingale disease
    • Chronic fatigue and immune dysfunction syndrome (CFIDS)
    • Neuroendocrineimmune disorder
    • Myalgic encephalopathy.

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My spouse bought me a t-shirt that says, “Regrettably, all the good paying jobs start before I wake up.”

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