Torque cones or not......??
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Cruiser
Joined: Jan 2013
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From: Whangarei. New Zealand.
Torque cones or not......??
What are your thoughts on running torque cones on a good 2 into 1 exhaust?
I have an American Ironhorse (looks near identical to a D&D) 2 into 1 on my 02 Deuce and i've been told that torque cones will still help on most exhaust systems. True or false?
I always thought they only help out with straight pipes with no baffles? I know my old Fatboy with Samson drag pipes (no baffles) improved alot with torque cones.
But on a good 2 into 1?
Your thoughts please............................................ ............................
I have an American Ironhorse (looks near identical to a D&D) 2 into 1 on my 02 Deuce and i've been told that torque cones will still help on most exhaust systems. True or false?
I always thought they only help out with straight pipes with no baffles? I know my old Fatboy with Samson drag pipes (no baffles) improved alot with torque cones.
But on a good 2 into 1?
Your thoughts please............................................ ............................
Last edited by Hazeyboy94; Apr 1, 2015 at 04:35 AM. Reason: Spelling Error
Not. The cones are meant to break up the reversion wave in instances where the reversion wave works against us. A 2 into 1 uses the reversion wave to its own advantage. If you follow the link below and scroll down to "Exhaust 101" it explains what the reversion wave is and how it can work for us or against us.
http://www.hotbikeweb.com/custom-mot...nical-analysis
http://www.hotbikeweb.com/custom-mot...nical-analysis
Thread Starter
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Cruiser
Joined: Jan 2013
Posts: 136
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From: Whangarei. New Zealand.
Not. The cones are meant to break up the reversion wave in instances where the reversion wave works against us. A 2 into 1 uses the reversion wave to its own advantage. If you follow the link below and scroll down to "Exhaust 101" it explains what the reversion wave is and how it can work for us or against us.
http://www.hotbikeweb.com/custom-mot...nical-analysis
http://www.hotbikeweb.com/custom-mot...nical-analysis
The cones go into the head pipes at the exhaust ports. I would urge everyone to hit the link I posted above as it will give one a whole new understanding of how an exhaust system works (or should work). Misconceptions are incredibly common.
Last edited by MSP Dan; Apr 2, 2015 at 04:05 PM.
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Cruiser
Joined: Jan 2013
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From: Whangarei. New Zealand.
If you're talking about WHEN American Iron Horse designed the pipes for D&D to make, you'd be correct. But D&D stopped making American Iron Horse pipes around 2007 - 2008.
Last edited by Hazeyboy94; Apr 3, 2015 at 06:17 AM.
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A good well designed exhaust doesn't need torque cones. Been running my 2-into-1 for several years, as it was delivered - had the bike dynoed and it gives excellent torque curve and very smooth running.