Events > Other Runs & Events

Hillclimb at Ringwood (just North of Raymond Terrace) 9th April

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bfit:

--- Quote from: BOSCHVETTE on May 24, 2017, 11:51:08 AM ---The only thing that may be a problem is noise its 154DB at 7500 rpm


--- End quote ---
most tracks these days require mid 90`s so you may have to do a little work there.
Bfit

metalhead:
Of course, it depends how close and what angle you're at when measuring it too.

bfit:
154db 
no mater where you set up the testing gear, you will not loose 60db
unless you set up to test on a different track to the one the car it running on.
bfit

metalhead:
Sound level drops roughly 6dB for each double of distance. Most track day noise limits are measured from 15-20m, that will be very different to a level measured at the tailpipe for example. Don't know where the above level was measured, just mentioning it.

bfit:
The regs we deal with lay out Specific Criteria for testing.
set distance from the outlet at a specific angle.
bit hard to fiddle  the results.
Bfit

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