Results 1 to 10 of 10

Thread: Legal CR 500 - How to quiet down

  1. #1
    Join Date
    Oct 2004
    Location
    Southwestern Virginia
    Posts
    5

    Default Legal CR 500 - How to quiet down

    Anyone have a CR 500 that they have modified the exhaust to be in sound levels that are not a nuisance to my neighbors?

    I love the bike, but the racket of the thing makes me uncomfortable on the street. I don't want a ticket and I don't want to project a bad image out there for everyone else (like Harley's with straight pipes.)

    As they say, "Loud pipes lose rights!"
    '94 DR 350 SE - Commuter Bike
    '97 CR 500 - Plated

  2. #2
    Join Date
    Sep 2004
    Posts
    2,896

    Default Me too

    This has been one of my foremost concerns...

    I have a FMF Q muffler on my AF and it really doesn't do the job.
    I am planning to put on an exhaust wrap soon, but even that won't solve the fundemental problem that the muffler doesn't have enough volume (and I have heard that the AF models are even worse in this regard cause the muffler is a 250 model).

    I am going to tackle this later this year.

    Its either going to be dual mufflers, or a single large underseat muffler, guess which bike I am thinking of using....

    if u read the fine print, 80dB is quite a reduction and below Pennsylvania requirements

    the FMF on the bike promises something on the order of 90dB....just enough to piss off a cop....

    Keith Walker

  3. #3
    Join Date
    Aug 2004
    Location
    Pacific Northwest
    Posts
    9,664

    Default

    I have a full pro .... pipe etc and I'm the quietest of the group....there is nuthin that you could possibally do to make it sound as loud as a 4 stroke....
    Brian # 30


    KTM 450 SMR

    "Everyday is a good day" Just some days are better than others

  4. #4
    Join Date
    Dec 2004
    Location
    Melbourne
    Posts
    766

    Default

    As they say, "Loud pipes lose rights!"


    Yeah or there is always "the loud pipes save lives"

  5. #5
    Join Date
    Aug 2004
    Location
    Pacific Northwest
    Posts
    9,664

    Default

    I have a very loud pipe for the street ......as for the track... they never here me
    Brian # 30


    KTM 450 SMR

    "Everyday is a good day" Just some days are better than others

  6. #6
    Join Date
    Oct 2004
    Location
    Southwestern Virginia
    Posts
    5

    Default

    brian,

    do you have any test data for noise measurement? I think my 500 is pushing 100 dB.
    '94 DR 350 SE - Commuter Bike
    '97 CR 500 - Plated

  7. #7
    Join Date
    Aug 2004
    Location
    Pacific Northwest
    Posts
    9,664

    Default

    I don't but I will, they are quite picky about noise levels at Canby Oregon, I will see If I can get mine tested, I'm thinkin 94 DB max for me..........100 DB is freakin loud.....
    Brian # 30


    KTM 450 SMR

    "Everyday is a good day" Just some days are better than others

  8. #8
    Join Date
    Oct 2004
    Posts
    7

    Default

    I sold my CR500 two years ago. Before I sold it, I purchased a J&R (Answer) silencer. It was custom built by the manufacturer to reduce sound level. I ran the silencer once and took it off. With the J&R silencer, the bike needed to be re-jetted. I sold the bike before I got around to playing with the jetting. I still have the silencer. The bike was much quiter with this silencer. J&R told me that bike would be below 91db. They built several of these silencers for riders in Michigan. Apparently, Michigan is very strict about moise levels on public lands.

    I'll sell the silencer. I don't need it anymore. Conact me for more info and pictures.

    - John

  9. #9
    Join Date
    Jan 2005
    Location
    Washington
    Posts
    10

    Default

    I had a CR500RK model back in the early 90's and raced a few hare scrambles and enduros.The best one I had was the Answer silencer.....I forget the actual model name but the thing would DB at 96 everytime out.Best bet is to keep the packing fresh....I also welded on a end pipe that turned the sound towards the ground....I think it helped.

    Good luck
    Chris
    Ride quite.....Ride often

  10. #10
    Join Date
    Oct 2004
    Location
    Iles Anglo Normande
    Posts
    111

    Default

    this is an paste from an email i got:

    Hi,

    You will need a DEP silencer which has low decibal output and has the BS mark, cost is £135.00inc vat Orders take approx 4 weeks.

    Regards
    Darren
    e-mail: darren@dirtbikestore.com
    surf us on the web: www.DirtBikeStore.com

    i asked the guy for a road lagal pipe for my CR5....his answer above, check out their site and see if you can get a DEP locally to you.

    HTH

    John

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •