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Making a Noise
Back around the
1990s there was a lot of discussion about noise , one of the Queensland clubs where I was a member was strictly subjected to a
noise abatement EPA licence , it had to comply with AKA levels of noise. At that same
period at one National Committee meeting, a sound expert explained how a speaker reflected
and projected noise, the end result was a change to the regulations of exhaust pipes which
removed the very popular plate pipe as it was claimed to be the noise maker
of the century..!!! further efforts to reduce noise were added e.g. fin
dampeners on Yamaha Clubman motors, and the plate pipe was banned. From
there only cone type pipes were allowed (then later with only a max. 50
holes)
??? the reasons behind the maximum 50 holes remains completely unclear but
there must have been a reason noise reduction certainly was part of the cone only exhaust pipe new rule. As
a result of the noise, and the new exhaust cone application further rules were implemented
to control the noise , some may recall the $50,000 that was drawn from the
States AKA Track Development Fund to subsidise part of each clubs expense to purchase
noise meters , I have yet to hear of any one charged with a noise offence in all this time
(well I have made ample noise of issues and will continue to do so) but that
expense has to fall into the useless and wasteful category when you consider what has
followed. The J engine, and
after 10 years of trying to introduce a control muffler into clubman, to reduce noise, was first saddled with a control pipe and it was a
success in terms of parity and muffler and cost , a number of years (and too long) in
waiting the clubman class was then saddled
with a control pipe, and again the screams could be heard how bad this was going to be etc
etc , but today it is embraced and it is cost effective . The irony of all
this and the expense to reduce noise has actually been a fruitless and expensive
exercise because we are back to using what was originally banned for making too much noise
..A PLATE PIPE
Next story on clutches ...stay tuned ! |
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Tel: 61 -7 -3800 3773 , Fax: 61 -7- 3800 4895
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