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Old December 1st, 2010, 09:56 AM   #22
JBedney
ninjette.org member
 
Name: John
Location: California
Join Date: Aug 2010

Motorcycle(s): Ninja 250R

Posts: 34
Quote:
Originally Posted by JMcDonald View Post
Thanks . Sometimes I like the "look at me and my badass bike" factor of it's note, and I love looking at it and knowing I made it myself and there is nothing like it around here, but sometimes I feel like it's a bit much for me. I might play with some internal baffling to see if I can't mellow it out a bit.
Two identical mufflers installed in parallel are the equivalent to install one of those mufflers with half the length. (Like connecting resistors of the same value in parallel: 1/R = 1/r1 + 1/r1, then R = 0.5 r1)

You get more flow and less sound absorption, that's why the noise level is high.

Using mufflers with an smaller core diameter (25 mm) would be a solution, and to keep the "power look" you can use a 25 to 50mm transition pipe as an end cap.
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