A Revised Engineering Thought on True Duals

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Jun 14, 2019 | 07:48 AM

cajun1957a

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A Revised Engineering Thought on True Duals

I love the look and sound of true duals. I have Vance and Hines on my 2003 RKC. The bike performs well but of course there are those who want to squeeze out as much torque as possible and we have all heard that True Duals is not the way to get that. Fair enough, the science doesn't lie nor does the Dyno sheet so here is my possible fix if I may to this. Given there are several exhaust options where by the cross over goes under the chassis, why not make a crossover pipe to connect the true duals under there as well. You retain the look. You don't have extra heat on the right side and the torque numbers logically should rise again given the exhaust reversion is then addressed. Seems too simple a fix for it to work doesn't it. ("Occums Razor" in philosophy states that all things being equal usually the simplest solution is usually the best.") Just a thought.

randy

Jun 14, 2019 | 08:56 AM

hdbob2006

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I think you're describing S&S power tuned duals. Google them.

Jun 14, 2019 | 09:07 AM

decencyxdefied

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From: new caney, tx

there are tons of set ups with crossovers. That would make true duals the same would it not?

Jun 14, 2019 | 09:15 AM

skinman13

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My Rinehart True-Duals do not route the rear pipe to the right side, it goes out and to the left side. There is only the one front head pipe on the right side.

Jun 14, 2019 | 09:18 AM

hdbob2006

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Maybe the OP doesn't understand that once you connect the two pipes,they're not true duals anymore.

Last edited by hdbob2006; Jun 14, 2019 at 09:20 AM.

Jun 14, 2019 | 09:24 AM

skinman13

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Quote:

Originally Posted by hdbob2006

Maybe the OP doesn't understand that once you connect the two pipes,they're not true duals anymore.

I also picked up on the crossover comment...I was assuming that it was a reference to a single rear pipe routing out the right side and then under the chassis to the left side...

Jun 14, 2019 | 09:50 AM

jimglassford

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From: Manchester, MI

If you route the rear pipe to the left then under the bike, will all the differences in added turns create uneven back pressure between the front and rear exhaust? I have the feeling the simple solutions all have been tried by the manufacturers.