Category Archives: Press Release
Arizona Off-Road Championship
Information Release
May 13, 2021
Sound Testing and Spark Arrester inspections will be part of the Technical Inspection process at the May 22nd AMRA Arizona Off-Road State Championships in Prescott AZ.
Technical inspection will be on Friday 3 PM – 7 PM at signup and trackside Saturday 6 AM – 10 AM.
Sound Testing and Spark Arrester inspections will be performed by DPS Technical, the industry leader in vehicle sound control. Participation from Klim gear has made this process possible.
DPS Technical and Klim are committed to responsible motorized recreation and value the relationships of the Off – Road racing participants and strive to be good neighbors in the community.
An educational outreach will be part of this event. Visit the technical inspection area for details.
2013 Billabong Pro
Event:
Environmental Outreach Summary 2009-2013
Billabong Pro –Teahupoo, Tahiti
Overview:
Tahiti Surfing Contest – Environmental Activity Summary
Each year Chris Real from DPS Technical in conjunction with the event management staff performs an environmentally responsible activity during the Association of Surfing Professionals (ASP) Billlabong Pro & Von Zipper Trials in Teahupoo, Tahiti. This helps the community and we enjoy being the “good guys”.
Community Action Overview
In 2009 & 2010 we did a general area clean up and collected used oil / paint and recyclable materials at the various places to prevent hydrocarbon contamination of the lagoon. (Hydrocarbons are linked to cancer and sea life damage, additionally they are a fire safety concern.)
In 2011 & 2012 with the help of Jimmy Mawrr and Paul Scott we completed redirecting and balancing the electrical power lines in the webcast and other buildings, thus minimizing fire risk and overall power consumption. (The attention to detail has prevented some power black outs and lowered the electrocution risk.)
In 2011 an extreme swell hit during the contest.
The “Code Red” conditions resulted in many of the waterfront areas being flooded.
We take pride in knowing that our proactive cleanup activities were directly responsible for minimizing pollution, as many of the environmentally hazardous materials had been removed.
In 2011 & 2012 the locals helped us do a lead battery cleanup.
We were able to take in excess of 2,000 pounds of lead and used batteries to the recycling point at the marina.
Our actions have kept a known toxin from contaminating the food chain. (Lead is linked to reproductive harm in humans and is damaging to the food chain.)
For 2013 we placed aluminum and plastic “can crushers” and beverage container recycling points around Teahupoo. The container crushers minimized the physical bulk of the beverage containers and also made it easier for recycling collection. When the containers are crushed they take up less area in landfills and do not float, this is a benefit.
What is in the future?
We are committed to being good citizens’ so stay tuned!
Respectfully,
Chris Real, CLS
President, DPS Technical, Inc.
Sound Measuring Equipment
DPS Technical supports responsible OHV recreation and believes that excessive sound levels are a main cause of complaints against the sport.
Since 2004 DPS Technical, Inc. has supplied equipment and training for hundreds of OHV law enforcement officers and civilians throughout North America and these dedicated individuals perform sound level tests when possible.
A need for more citizen involvement in voluntary OHV testing has been identified. To remedy the lack of equipment for citizens to provide voluntary OHV sound level testing, DPS is implementing a Sound Testing Equipment Kit Program. The testing kit includes a Calibrated Type ll sound meter, tachometer, tape measure, storage box and other items necessary to perform spark arrestor inspections, or the SAE 1287 OHV field sound test or the SAE 2825 On Highway Motorcycle sound test procedure.
For further information on the program or to apply contact DPS Technical, Inc. – Chris Real at (909) 981-5228.
DPS Technical also has sound measurement training classes for civilians and law enforcement personnel. Many of the classes are held under contract and sponsored by The State of California OHV Division. To receive information on our training schedule in your area contact DPS Technical for details.
Chris Real, CLS President
DPS Technical, Inc.
1160 Dewey Way, Suite D
Upland, CA 91786
(909) 981-5228 T
Development of the J2835 On-Highway Motorcycle Sound Test Procedure
The MIC, MIC consultant Tom Austin (Sierra Research), MIC member Chris Real (DPS Technical, Inc.), and SAE Motorcycle Technical Steering Committee Chairman John Lenkeit (Dynamic Research Inc.) co-authored a paper on the development of the SAE J2825 on-highway stationary sound test procedure. The SAE published the paper, which was presented at the 2011 SAE Noise and Vibration Conference in Grand Rapids, Michigan on May 17th. The 14-page paper details the field testing, data analysis, evaluation of test site conditions, validation testing and even field testing.
In response to a growing need for a practical and technically valid method for measuring exhaust sound pressure levels (SPL) of on-highway motorcycles, the SAE Motorcycle Technical Steering Committee has developed Surface Vehicle Recommended Practice J28251, “Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles,” which includes a new stationary sound test procedure and recommendations for limit values. Key goals of the development process included: minimal equipment requirements, ease of implementation by non-technical personnel, and consistency with the federal EPA requirements; in particular, vehicles compliant with the EPA requirements should not fail when assessed using J2825. Development of the recommended practice involved a comprehensive field study of 25 motorcycles and 76 different exhaust systems, ranging from relatively quiet OEM systems to unbaffled, aftermarket exhaust systems. For the various motorcycle/exhaust system configurations, SPL measurements were made using the EPA pass-by procedure and several different stationary measurement methods.
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The SAE J2725 paper (2011-01-1614), “Development of the J2835 On-Highway Motorcycle Sound Test Procedure,” can be downloaded and purchased at http://papers.sae.org/2011-01-1614/
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The SAE J2825 standard, Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles,” can be downloaded and purchased at http://www.sae.org/technical/standards/J2825_200905
Acoustical Society of America presentation
Los Angeles, CA – May 2004
The team of Dr. Robin T. Harrison, P.E. & Chris F. Real, CLS presented “Off-Road Vehicle Noise Control” to the members of this premier technical society. The members were treated to an overview of Rob & Chris’ thirty-five years of research activities in this industry, and were encouraged to ask questions on historical events, as well as the latest technology from the racing community.
Acoustical Society of America – 05-18-2004 – Off-Road Vehicle Noise Control
Technical Presentations
Portland, Oregon – March 2004
Chris Real presented an educational environmental topic to the nation’s land managers in Portland, Oregon. The presentation addressed issues such as “Safe Chemical Disposal and the Off-Highway Environment”, “Race Day Chemical Disposal”, and “OHV Sound Measurement Equipment and Training”. The ChemHelp / National Off-Highway Vehicle Conservation Council (NOHVCC) workshop handout is available by contacting Chris Real at DPS, Inc – ChemHelp – www.ChemHelp.com or (909) 981-5228. DPS, Inc. will be hosting a technical discussion sound training class and demonstration at the NOHVCC director’s meeting in Richfield, Utah 09/30/2004, the Richfield ATV Jamboree, and at the 2005 NOHVCC land manager’s conference (03/05) in Ontario, CA.
