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Posted

Just wanted to record my noise experience with Accousafil. Donington Park September last year pre-Accoustafil I recorded 99db static and had to fit an additional end pipe muffler to continue the track day. Fast forward to last week and I recorded 93db static at Mallory Park with Accoustafil.

 

I think a lot of this has to do with over-pack/under-pack issues and my novice behaviour regarding how dense to fill with eglass strands. I was definitely overfilling before. And the accoustafil matting takes this issue out of the equation and I found it simple to fit.

 

Just booked 9th September @ Bedford GT layout to celebrate!!!

Posted

I've bought two lots of Acoustafil from Thermal Velocity - on both occasions the service has been good - fast and hassle-free. The calculator to determine how much you need is here.

 

Adam

Posted

I've also had good experience with Acoustafil. My standard SLR/VHPD 6" silencer measured 98dB static at Bedford in April, but just under 88dB driveby at 7500rpm, which meant I managed one out lap and one quick-ish lap before being blacked and not allowed out again. ☹️

 

My modified and repacked silencer is now also about 93dB to 95dB at a coil-verified 5000rpm (not the dodgy tacho), depending on the tester. The old silencer was still full with the standard Caterham packing, which weighed exactly the same (1.4kgs) as the Acoustafil.

 

I got my stuff via eBay:

 

http://www.ebay.co.uk/itm/261175184136

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