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[CVOjunkie]

Has any one had RINEHART duals and changed to d&d fat cats? What improvements did you see? Does anybody have a dyno charts to show the two head to head?

[110tHunDer]

 
Junkie, not sure if you have a stock bike or a modified one, but here's a dyno chart of two SEEGs with identical mods, same tuner and dyno.  Mine (Rinehart true duals) is in red and JR's (D&D Fat Cats) is in blue.  You can see that the D&D comes in sooner on the torque while the Rinehart makes higher peak numbers.

I've ridden his and he's been on mine.  Both bike run stout!  I boils down to where do you want the most power since the two pipes do behave differently and you can feel it in the seat of the pants when you ride the two bikes.

[SBB]

Junkie, not sure if you have a stock bike or a modified one, but here's a dyno chart of two SEEGs with identical mods, same tuner and dyno.  Mine (Rinehart true duals) is in red and JR's (D&D Fat Cats) is in blue.  You can see that the D&D comes in sooner on the torque while the Rinehart makes higher peak numbers.

I've ridden his and he's been on mine.  Both bike run stout!  I boils down to where do you want the most power since the two pipes do behave differently and you can feel it in the seat of the pants when you ride the two bikes.

Brian

What would you attribute the HUGE increase in torque from 3 to 5K to?
Is the only difference the pipes?

 [smiley=nixweiss.gif]

Just went back and looked again,
Yours has the SERT and his has the Thundermax.
Anything else you know of?

 [smiley=nixweiss.gif]

[geezerglide]

Also,

Which set is louder the Rhineharts or D&Ds?

The reason I ask, I have the V&H Pro Pipe and after a day of highway riding the thumping away in one ear is annoying. I stll have a set of Freedom Cycle Duals, which I am thinking of putting back on.

I checked with Jame Yuell and he thinks they will work well with mu Jims 120 build, which puts out 131 HP and 134 TQ. Going to the True Dual set up may drop HP and TQ a bit, however, I don't really care.

Thanks,

geezerglide

[110tHunDer]

Brian

What would you attribute the HUGE increase in torque from 3 to 5K to?
Is the only difference the pipes?

 [smiley=nixweiss.gif]

Just went back and looked again,
Yours has the SERT and his has the Thundermax.
Anything else you know of?

 [smiley=nixweiss.gif]

Chip, yes, the ECMs are different, but I attribute the difference to the pipes alone.  If you look at the dyno charts that Zipper's provided (T-Max on both bikes), you see the same shapes to the curves:

[110tHunDer]

Also,

Which set is louder the Rhineharts or D&Ds?

The reason I ask, I have the V&H Pro Pipe and after a day of highway riding the thumping away in one ear is annoying. I stll have a set of Freedom Cycle Duals, which I am thinking of putting back on.

I checked with Jame Yuell and he thinks they will work well with mu Jims 120 build, which puts out 131 HP and 134 TQ. Going to the True Dual set up may drop HP and TQ a bit, however, I don't really care.

Thanks,

geezerglide

Geezer, I'd say they're relatively similar decibel-wise (maybe a slight edge to the D&D being more quiet), but the tone is completely different between the two.  Both good, just different.  The D&D has more of an "exotic" sound for lack of a better word (more raspy and higher pitched, at least to my ear), while the Rinehart has a much deeper and lower tone.

[SBB]

Chip, yes, the ECMs are different, but I attribute the difference to the pipes alone.  If you look at the dyno charts that Zipper's provided (T-Max on both bikes), you see the same shapes to the curves:

Brian

Your right!
That's very interesting!
Says a lot for the R/H's

 [smiley=xyxthumbs.gif]

[geezerglide]

103tHunDer,

Thanks for the response. Will  put on the Freedoms Cycles on the bike, as I already have them. Will bring back from Phoenix and install in March.

geezerglide

[kojak]

Brian
 
Your right!
That's very interesting!
Says a lot for the R/H's
 
  
I agree! More so with a 5 speed tranny.

[Mikey]

Guys,
This is really confusing. I just talked to Zippers and they recomended Fat Cat 2 into 1. The salesman said all two into are just better with their 575 cam.  Freedom recomends their true duals for their cam and next is Thunderheader 2 into 1 . What gives?  Is the extra torque not important?

Mike

[SneakyPete]

Guys,
This is really confusing. I just talked to Zippers and they recomended Fat Cat 2 into 1. The salesman said all two into are just better with their 575 cam.  Freedom recomends their true duals for their cam and next is Thunderheader 2 into 1 . What gives?  Is the extra torque not important?

Mike

Mike,

I installed the 575 cam and went with Reinhart 2:1 pipes (like the sound and the look better than D&D Fatcats).  I chose 2:1 only because the torque comes on faster and stays relatively flat to about 5K rpm, this was also the opinion expressed by Zipper's.  As Brian said, they are the same but different depending on your riding style.  If you like the tru dual look, go with the Reinharts.  If you perfer 2:1 the D&D's are real nice as are the Reinharts.  Zipper's also has a dyno chart for the Thunderheader 2:1 which, as I recall, had a little higher HP numbers than the D&D but about the same torque.  On a bagger, torque is what you want.  The Thunderheader is loud and ugly (JMHO) so I didn't consider it.

[jfh]

Here is a more recent exhaust comparison provided by Zipper's.  This is from a 110" motor and not a 103" with their 575 cams.  Note that JK said the dip between 3200-3700 RPM in the D&D was later eliminated with additional tuning.

[Black Diamond]

Junkie, not sure if you have a stock bike or a modified one, but here's a dyno chart of two SEEGs with identical mods, same tuner and dyno.  Mine (Rinehart true duals) is in red and JR's (D&D Fat Cats) is in blue.  You can see that the D&D comes in sooner on the torque while the Rinehart makes higher peak numbers.

I've ridden his and he's been on mine.  Both bike run stout!  I boils down to where do you want the most power since the two pipes do behave differently and you can feel it in the seat of the pants when you ride the two bikes.

Chip, yes, the ECMs are different, but I attribute the difference to the pipes alone.  If you look at the dyno charts that Zipper's provided (T-Max on both bikes), you see the same shapes to the curves:

Brian

I was looking up some information for a possible winter motor project. I was just asking myself this very question. Just want to pass on thanks for sharing the info. I'm glad I did this search and found these postings. This site has a lot of good information if you take the time to look!

JW

[sportygordy]

Don't rule out the Supper Traps 2:1 megaphones. They are a tunable exhaust and you can get your torque curves set where you want them. Most bagger bikes require low torque curves and the results equals a very quite exhaust sound. I'm using the Supper Traps 2:1 with 12 disc which is very quite, close to stock. They sound really good when you roll on the throttle. D&D is an awesome 2:1 exhaust but if you want equal or better performance and a quite exhaust setup, try the Supper Traps.

[Jbbrown73]

Has anyone tried the fatcats with the quiet baffle?  I am contemplating this for my new SERK.  I had a nice long conversation yesterday with Doc and he highly recommends the fatcat with the 110 engine.  He said that with the stock 110 cam the fatcats really produce a good broad torque band.  I do not want a really loud bike.  I had some Bub 7 true duals on a 103" '06 watermelon and they were too loud for me.  I would like some feedback on what these sound like before I drop hundreds of dollars on an exhaust.