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> Exhaust Time Again
Fbomaaahhh
post Dec 18 2013, 10:03 PM
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My new bike has Rinehart slip-on's and I'm wondering what is the big difference is between slip-ons and True Duals?

I had V&H Big Shot duals on my last Ultra and loved them; sound and performance was perfect for me. I may go that route again, but wanted to check with you guys first to see what the difference really is.

Thoughts?

This post has been edited by Fbomaaahhh: Dec 18 2013, 10:03 PM
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Fgowi
post Dec 18 2013, 10:46 PM
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I have the true duals (Rinehart) on my '01. The whole system. Head pipes with NO crossover. They're medium loud. They say they dyno well but I don't know how they stack up against Vance & Hines, which have a great rep.

Maybe not a preference but on my '11 I use a Drago's Bike Works 2:1. Really like it's sound and performance. Full disclosure, I know Frank Drago. Stand up guy!
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SeaHag
post Dec 19 2013, 04:54 AM
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QUOTE(Fbomaaahhh @ Dec 18 2013, 09:03 PM) *
My new bike has Rinehart slip-on's and I'm wondering what is the big difference is between slip-ons and True Duals?

I had V&H Big Shot duals on my last Ultra and loved them; sound and performance was perfect for me. I may go that route again, but wanted to check with you guys first to see what the difference really is.

Thoughts?



For the most part, the attraction to true duals is the separate exhaust tones alternating their song. Performance wise the true duals typically cost you some of the low end torque in exchange for more wide open throttle power; similar to drag pipes but not to the same extent because you still have the back pressure from the mufflers. True duals with stepped headers keep the exhaust moving faster and the steps help with reversion waves that can prevent some of the exhaust from escaping the cylinder...which keeps some of the intake charge out further lowering total HP.

Another benefit of true duals will be ease of removal for service access...instead of having to rip the whole system off, you can pull one pipe. The crossover pipe on model years up to the new frame in 2009 were problematic for cracking if the mounts are not kept tight and the crossovers shed a LOT of heat on your right leg. I know a lot of people switch to true duals simply to cut down on the heat.

The redesigned crossover system on the 2009 and up models is far superior in performance if you get one without the catalytic convertors. The 2 into 1 into 2 makes a great power curve.

I'm impressed with my memory tonight. (IMG:http://www.harleyshoptalk.net/forums/style_emoticons/default/smile.gif) I don't think too often of harley performance anymore and it's good to see not everything I read has escaped me yet. (IMG:http://www.harleyshoptalk.net/forums/style_emoticons/default/wink.gif)
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Blackcloud
post Dec 19 2013, 06:50 AM
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This guy is down the street from us, and is well respected for his performance builds.
Here is a short article he wrote about exhaust.
http://www.hildrethperformance.com/article-exhaust.html


About him:
http://www.hildrethperformance.com/aboutus.html
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SeaHag
post Dec 19 2013, 08:44 AM
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QUOTE(Blackcloud @ Dec 19 2013, 05:50 AM) *
This guy is down the street from us, and is well respected for his performance builds.
Here is a short article he wrote about exhaust.
http://www.hildrethperformance.com/article-exhaust.html
About him:
http://www.hildrethperformance.com/aboutus.html



I read it and was happy I hadn't mislead him in any of my rememberings above.
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