Tag Archives: ATV

Pitch Stability Testing

DPS Technical has implemented a larger Pitch Stability “Tip Table” for measurement of ATV (All Terrain Vehicle) and the larger ROV (Recreational Off Highway Vehicles) pitch stability.

This test method uses an ANSI recognized engineering test to help vehicle and accessory manufacturers determine vehicle stability on inclines and with various accessory components.

Sound – Winter 2014 Update

FAQs

1. What are the road side or trail side sound test procedures?

The sound test procedure for Motorcycles, ATV’s, ROV’s and  MUVs is SAE J1287. This is a stationary testing method where the measurement is taken close to the vehicle.

This procedure is outlined in numerous vehicle operational codes and in sporting regulations.

SoundFAQ1a SoundFAQ1b

On Highway Motorcycles and Dual Sport Motorcycles – These vehicles are becoming very popular. The testing procedure for these on highway legal vehicles is covered in the SAE Test procedure, SAE J1287.

On Highway Motorcycles “Street Bikes”  – Be advised that an SAE test procedure has been developed specifically for On-Highway motorcycles. The test procedure is SAE J2825.
(Technical report issued, summary available upon request) (Video: http://www.youtube.com/watch?v=2KdYUhH3JSo)

SoundFAQ1c P100117 v118-6 PassCar-MS.indd

2.  Are new designs of vehicles required to be noise compliant?

SoundFAQ2a SoundFAQ2b

Yes, Side by Side ATV’s also known as ROV’s  “Recreational Off Highway Vehicles” / MUVs “Multi Use Vehicles” are becoming very popular.

These vehicles are subject to the same noise and spark arrester regulations as other OHV’s and the test procedures and sound limits apply.

 It is possible that these Off-Highway vehicles may have On Highway / limited street use privileges in some communities, therefore, noise control levels for street registered vehicles apply.    (Video Available)

Other Street / On Highway registered vehicles such as Jeeps and Sand Rails and Hot Rods must conform to noise control and adequate muffler requirements.

Refer to the appropriate vehicle code sections.  The sound measurement test procedures are published by the SAE.

For California and many other states and sections of Canada the common automotive roadside sound test methods for automobiles are SAE J1169 or SAE 1492, or the ISO counterpart.  This is a 20” test method and is very similar to the sound testing methods utilized for Off Highway Motorcycles and ATVs / MUVs. (Video available)

SoundFAQ2c SoundFAQ2d

 3. Are Mufflers and a Spark Arresters the same thing?

SoundFAQ3a SoundFAQ3b

No, Off Highway Vehicle exhaust systems have several components.  First is the Muffler. The muffler is for reducing the sound level.

The second component is often a Spark Arrester.

The Spark arrester is intended to minimize the potential for discharging particulates that can be an ignition source.  These are individual components often.  Each component requires maintenance to function properly.

4. What are the sound measuring equipment requirements?

For Enforcement purposes, an ANSI Type 1 instrument is needed.  The “evidence level” instruments require calibration to be utilized for evidence gathering purposes.   When selecting instruments, be sure to consider the required performance level and calibration maintenance costs.  The evidence equipment calibration term is yearly.

For Awareness measuring purposes, an ANSI Type 2 instrument is suitable.  These instruments are frequently utilized by trail volunteers and clubs.  These instruments when calibrated and used by trained personnel provide reasonably accurate data.  These instruments have a recommended calibration term of every other year.

5. Are sound measuring equipment programs available?

Yes, several equipment programs are available, ranging from equipment accuracy verification programs (Calibration) and “loaner” equipment kits for special events.

Complete sound measuring instrument kits are available for purchase.

 6. How do you get more information or training?

Instruction and training for noise control is available.  DPS Technical coordinates these training sessions.  Currently a schedule of live on location classes is being developed for the season.

A web based training module is available as well as several field training refresher and outreach sessions.

In the event your agency needs people trained please send an e-mail to us and we will send you the training schedule.

 

It is my hope that this information is beneficial. In the event you require more information, please do not hesitate to contact me directly.

Respectfully,

Chris F. Real, CLS
President, DPS Technical, Inc.
Chris.Real@DPSTechnical.com

 

 

 

 

Resources

American Motorcyclist Association

American Motorcyclist Magazine

Arizona Roddin’ and Ridin’

Auto Week Magazine

ATV

Cycle Magazine

Cycle News

Dealer News

Dirt Bike Magazine

Dirt Rider Magazine

Dirt Wheels Magazine

DPS Technical, Inc.

EPA

Honda

Honda Red Rider

Motorcycle Consumer News

Racer X Illustrated

SAE

Side x Side Action Magazine

Sound

Torco Oil

U.S. Department of Justice

  • DOJ Press Release (03/27/2006) – United States vs. Andrew Wright, re: importation and sale of grey market motorcycles into the United States under false pretenses.

Field Logistics

Field logistical services  / Media support

DPS Technical Inc. has capabilities for providing sound studies and solutions to noise mitigation in both local and remote locations. Our DPS Technical Inc. logistical support service has the ability to perform services such as professional support in sound measurement, management, and mitigation for Law Enforcement and Land Managers, as well as education, equipment, and support for the organized event/race promoting Club or Track Owner.  Media support for On Road, Off Road and ATV vehicles, vehicle introductions, sound measurement, and education in most locations in the US are also available.

Our field service center can be seen at numerous motorcycle & ATV motorsports events each year, such as the Nevada 200 & 1000, Loretta Lynn’s Motocross Championships, the Rocky Mountain ATV Jamboree, as well as at media functions such as the Dirt Rider Magazine 24 Hour, and community educational events such as the NOHVCC National Land Managers Conference, and Community & Vehicle Noise Abatement Outreach Clinics.  Our field services assist our clients as well as their customers.  Feel free to stop by the DPS Technical Inc. mobile service center anytime for an introduction to sound education and management or for a voluntary “non-ticket” vehicle sound test.

DPS Technical Media Support DPS Technical Field Logistical Services

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