Will I be too noisy?

Discussion in 'Trackdays' started by okeloon, Jan 31, 2018.

  1. okeloon

    okeloon Member

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    I’m contemplating a uk track day. Standard RR6 with slip on Akra. Not sure how many dB but it is loud. Anyone know what noise restrictions might apply to my bike?
     
  2. Muffking

    Muffking Elite Member

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    The noise restriction will be set for the track, although some tracks have noisy days where the limits are higher. These will be the same for any bike, just applied at different revs.
    Are you able to ride yours there in advance to be measured?
     
  3. okeloon

    okeloon Member

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    Hi not going to be able go in advance, might see if anyone over here has a dB meter I can use
     
  4. hitch

    hitch New Member

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    Amazon have some cheap db meters.

    How do they test the noise? ...I mean practically shoving the meter at the end of the exhaust or holding it a certain distance from the side/rear of the bike?
     
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  5. nigelrb

    nigelrb New Member

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    It should be on the instructions in the kit.

    An emissions analyser goes into the exhaust, but decibels are generally read at a distance of about 1 metre at nominated revs (often around 3,000)
     
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  6. Blade048

    Blade048 Active Member

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    I have an akra slip-on on my 06 and at the 5500rpm noise test makes 98db (without baffle).
     
    #6 Blade048, Feb 1, 2018
    Last edited: Feb 1, 2018
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  7. hitch

    hitch New Member

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    I might get one of thos emeters off ebay and see what the result is with my Racefit :confused:
     
  8. PauloHRC

    PauloHRC New Member

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    I've got a racefit growler 2 and I'm pretty certain it won't pass track day noise limits which is 102db (at Oulton).

    I got a db reader app and measured it with that in a similar way they do at track days. I know it might not be 100% accurate but I'm sure it's close. With the baffle in its below noise limits but I'm still worried so I've wrapped the baffle (the part that is hidden inside the exhaust) in a little exhaust packing and secured it with 4 stainless steel cable ties. Works a treat, bit daft I know buying a racefit and then dampening it down but needs must! ! o_O
     
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  9. nigelrb

    nigelrb New Member

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    Wow! Brilliant idea. I've never heard of it - well, it's not in Pensioner's Weekly. I hope Hitch sees your post to save him the cost of buying from eBay.;)
     
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  10. PauloHRC

    PauloHRC New Member

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    The app is just something I got off the app store.

    Here is a pic of the exhaust wadding I got and an example of what I did with the baffle. (It's not my actual baffle) ;)
     

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  11. hitch

    hitch New Member

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    Great idea PauloHRC - thanks for sharing.
     
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  12. sinewave

    sinewave God Like

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    I certainly wouldn't rely on an App on ya phone!

    A phones microphone is not designed for 100db + noise testing in the slightest! :rolleyes:

    OP, just make sure you have a baffle for your exhaust, it'll be an expensive day out 4 U if your Bike fails and there's no refunds either!

    1000cc Bikes are tested at 5500rpm and at 1m from end of ya Zorst.

    Other capacities have diff Rev limits but all measured at 1m.
     
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  13. nigelrb

    nigelrb New Member

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    Fair enough, but OP already acknowledged that it's not 100% accurate but merely a starting point.
     
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  14. PauloHRC

    PauloHRC New Member

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    So what else are 'ya' supposed to do if you're in 'ya' back garden and are curious how loud your exhaust is??

    And yes we all know it won't be 100% accurate as stated in previous post, but the db reader I have reads up too 120 db and even if it's plus or minus 5 db's, it will give you some idea of a ball park figure.:confused:

    Don't think I said I was reliant on it either......or I wouldn't have adapted my baffle! ;)
     
  15. And7rp2

    And7rp2 Elite Member

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    the firebloke has an rr4 with full akra system and it blows 98db , was the same on our rr4 too.
     

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