Staggered Baffles
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Road Master
Joined: Sep 2013
Posts: 1,185
Likes: 248
From: Sterling IL.
Staggered Baffles
Anyone run with smaller baffle on left vs right? Giving it a try myself after running 2.5" baffles since Rush Big Louies were new. Then decatted head pipe and lost some low end while enjoying the sounds. Decided to go the 2" baffle route and gained my low end but lost the sounds. Right now I have the left as 2" and right at 2.5". Sounds good but have yet to ride.
Extreme HDF Member
Joined: Sep 2010
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From: Phoenix '53, '88, '09 Big Twins
my priority is tuning
I use supertrapp disk type mufflers and the left is set to flow less than the right.
this keeps the majority of the flow on the right side at low to midrange rpms- essentially acting as a 2 into 1.
in theory at higher rpms the increased exhaust gasses will find their way out the left side through the 2 x 90ş bends of the 09+ crossover - the more restrictive left side muffler will help to keep exhaust gas velocity high
you may have seen that the M8 header is sized smaller on the left side
mike
I use supertrapp disk type mufflers and the left is set to flow less than the right.
this keeps the majority of the flow on the right side at low to midrange rpms- essentially acting as a 2 into 1.
in theory at higher rpms the increased exhaust gasses will find their way out the left side through the 2 x 90ş bends of the 09+ crossover - the more restrictive left side muffler will help to keep exhaust gas velocity high
you may have seen that the M8 header is sized smaller on the left side
mike
Last edited by mkguitar; Sep 9, 2016 at 12:12 AM.
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Road Master
Joined: Sep 2013
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From: Sterling IL.
Did 5 hrs of riding and like the results. Good low end again, very noticeable change. Sound is very good too as was very quiet with 2" baffles on both sides. Smooth and very deep sound
Ultimate HDF Member
Joined: Jan 2009
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From: East Tn Foot of The Dragon
Anyone run with smaller baffle on left vs right? Giving it a try myself after running 2.5" baffles since Rush Big Louies were new. Then decatted head pipe and lost some low end while enjoying the sounds. Decided to go the 2" baffle route and gained my low end but lost the sounds. Right now I have the left as 2" and right at 2.5". Sounds good but have yet to ride.
Road Warrior
Joined: Mar 2016
Posts: 1,861
Likes: 516
From: georgia
I am running 4 inch big louies my self in their SB2 set up they are 3 on the left and 2.5 on the right using a FP3 tuner and Arlenn Ness big sucker with a catted head pipe , no loss of torque with this set up it runs fine and getting better fuel mileage also really barks when you give her the gas
Ultimate HDF Member
Joined: Jan 2009
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From: East Tn Foot of The Dragon
Greg, the newer under frame system you have can benefit from "tuning" the balance between the 2 mufflers, but not as much as the "old style" TC touring models. It will change the sound and at best a slight improvement in tuning. My logic with regard to balance. the mufflers would put the larger baffle in the left muffler. I see you are doing the opposite.
Last edited by checkers; Sep 11, 2016 at 06:43 AM.
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Extreme HDF Member
Joined: Sep 2010
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From: Phoenix '53, '88, '09 Big Twins
larger baffle in the left pipe would result in lesser velocity of the exhaust gasses- not what you would want
Mike
Mike
Last edited by mkguitar; Sep 11, 2016 at 01:05 PM.
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Thread Starter
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Road Master
Joined: Sep 2013
Posts: 1,185
Likes: 248
From: Sterling IL.
Greg, the newer under frame system you have can benefit from "tuning" the balance between the 2 mufflers, but not as much as the "old style" TC touring models. It will change the sound and at best a slight improvement in tuning. My logic with regard to balance. the mufflers would put the larger baffle in the left muffler. I see you are doing the opposite.