Middle Tennessee Dirt Riders

"Families, Friends and Fun"

Sound check

  • March 23, 2019 11:12 PM
    Message # 7241737
    Deleted user

    How is the sound check done?

    I have a db meter and want to make sure mine are within limits while I have time to rectify any "fouls".

    Thx

  • March 25, 2019 1:38 AM
    Reply # 7242779 on 7241737

    This link will tell you more than you ever want to know and probably totally confuse you.

    https://www.fs.fed.us/t-d/programs/fire/spark_arrester_guides/_assets/OHV209-308Blue.pdf

    Generally if you hold the sound meter at 20 inches from the tip of the silencer at a 45 degree angle to the bike. turn the throttle up to about 1/4 - 3/8 and hold it. Then check the sound level. If it is at or below the required level you are ok. If above you have a problem.

    If you have a stock bike with a stock exhaust with a freshly packed silencer you will probably be ok.





  • March 25, 2019 8:48 AM
    Reply # 7243059 on 7241737

    Once again I'll be doing sound check at the Spring Ride on Saturday and Sunday.  Come on by and check it out.  We use the standard accepted practice for the test.  What I can say is that very few fail.  The ones that do fail are for the most part modified 4 stroke 4 wheelers.  They like to take the guts out of their silencers. 

     

  • March 25, 2019 2:47 PM
    Reply # 7243912 on 7241737

    And when you tell them it is too loud they always say "Well that is the way it came" 140 db at idle I don't think so.


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