Thanks Shan :thumbsup:Shanster said:Lte,s told me 1/2hp on there pipes with quiet cores and barkers said about the same. Im planning on a dyno run. I will know more then.
:beer: :beer:captnkllm said:ok i found it
According to the very nice lady who answers Barker's phones, without quiet cores installed, they are 102db's. Needless to say I ordered the inserts with my pipes. Might be a little loud for Silver Lake without them.
94db with quiet cores in
ok i was close. there ya go..
Do you use the same thing they use to determine RPM......the little wire thing seems weird and the officer that did us said it didn’t matter were it was put on the bike it would still be accurate. We debated that it would be different taking the measurement on the grab bar instead of his spot on the seat......he finally gave in and took one from the bar and it came to rpm sooner but barely resulted in a 1 db change.....Zebradog said:I actually went out and bought the same equipment they use at the Oregon Dunes to check my sound levels. There are different RPMs at which they check it, so they say 93db, but for the raptor that is at 3125 RPM, which mine read under 93 without the cores in them. I haven't run a final test after I get the intake on too, because just taking off the lid makes them WAY louder, but when I get the intake I'll run another test. You can find the RPM tables here:
Here's another helpfull link:
The formula they refer to in this link is the same as the table listed above, but I called the dunes and this is how they test you bike down there EXACTLY!