| 105 decibels is the limit set ,as per the ACU regulations, for all classes , both two and four stroke. The method of measurement differs from machine type and a set rev limit for the test is determine from engine capacity , no. of cylinders etc. You are allowed tollerences for post race tests, climatic conditions ,type of meter used etc but it is advisable to keep within the 105 dB (A) limit. |
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