Quiet Slip-Ons?
Road Captain
Joined: Jul 2012
Posts: 506
Likes: 7
From: Charlotte, NC
So if you listened to the video I posted, would you say the Samson DB killer baffles will put me close to either the stock pipes without the cat or the street cannons WITH the cat? I liked them a lot before the cat came out - nice sound at idle or cruise and not too loud.
Last edited by Deckman; Jun 17, 2014 at 02:22 PM.
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Ultimate HDF Member
Joined: Jun 2010
Posts: 5,105
Likes: 16
From: Blaine, WA
After doing a bit of reading and hearing others experience and suggestions, it occurred to me that as previously suggested - one of the supertrapp based systems may be best and "should" save buying one slip-on after another in search of the right one. Disc systems have never been my favorite on the looks side of things but performance and sound have to come first I suppose.
One of the main reasons I chose the street cannon was in the belief that a 50 state epa approved pipe would be pretty quiet - which is correct until you pull the cat from your header, then you have a mild to middle of the pack on the obnoxious scale. I'll probably also give Samson a call to see what they have to say but that seems like the most expensive option.
Could someone point of the main difference between the SE Fatshotz and the Nightstick? There's around a $70 difference and other than appearance they seem mostly the same thing other than the Fatshotz have the open end cap and that seems odd for an epa approved system.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
watch for these on the classifieds- i have picked up a few sets for about 1/2 price
both versions should be marked as epa compliant for 96/103/110.
I know that the first version of the fatshots was not marked for the 110...so there is a A suffix added when the stamping was changed
the open end cap is compliant as the fatshots was introduced for 2010...same time as the cat.
that indicates how much an effect the cat has on sound- those pipes as stock are pretty darn loud on a catless header
the fatshot has a 2" perforated core- hold it up to light and you see all the way through it.
the baffle has a packing on the outside which is repackable and will require probably every 20 or 30K miles. this perf/packing helps to soak up high frequency noise
it comes with 10 disks and a 1.4" open end cap- the 1.4" hole is equivalent to 9 disks stacked in terms of flow.
so a flow "factor" of 19.
the core is capable of flowing to a "factor" of 27 according the supertrapp.
the nightstick is solid core- no perforations. because of this tinnier sounding if used with open end cap, which is why I think the solid end cap came on that.
both of these made by supertrapp for S/E, all the 4" disks and end caps on ebay will fit.
On my 09 I use modified fatshots, I have selected the number of disks that works for what I do ( 8 left, 15 right) and usually a solid end cap
(all this assumes you can get your hands on a Security bit")
I've has a S/T supermeg on my FXR since 1990. as the motor has been built, the pipe is retuned to match.
I have also used supermegs slip ons on baggers with stock no cat headers.
the S/E versions are functionally the same ( AFAIK) and usually a lot less expensive- the S/T bagger slip ons were a Ness exclusive for years and pricey...
mike
both versions should be marked as epa compliant for 96/103/110.
I know that the first version of the fatshots was not marked for the 110...so there is a A suffix added when the stamping was changed
the open end cap is compliant as the fatshots was introduced for 2010...same time as the cat.
that indicates how much an effect the cat has on sound- those pipes as stock are pretty darn loud on a catless header
the fatshot has a 2" perforated core- hold it up to light and you see all the way through it.
the baffle has a packing on the outside which is repackable and will require probably every 20 or 30K miles. this perf/packing helps to soak up high frequency noise
it comes with 10 disks and a 1.4" open end cap- the 1.4" hole is equivalent to 9 disks stacked in terms of flow.
so a flow "factor" of 19.
the core is capable of flowing to a "factor" of 27 according the supertrapp.
the nightstick is solid core- no perforations. because of this tinnier sounding if used with open end cap, which is why I think the solid end cap came on that.
both of these made by supertrapp for S/E, all the 4" disks and end caps on ebay will fit.
On my 09 I use modified fatshots, I have selected the number of disks that works for what I do ( 8 left, 15 right) and usually a solid end cap
(all this assumes you can get your hands on a Security bit")
I've has a S/T supermeg on my FXR since 1990. as the motor has been built, the pipe is retuned to match.
I have also used supermegs slip ons on baggers with stock no cat headers.
the S/E versions are functionally the same ( AFAIK) and usually a lot less expensive- the S/T bagger slip ons were a Ness exclusive for years and pricey...
mike
Last edited by mkguitar; Jun 17, 2014 at 03:56 PM.
Thread Starter
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Ultimate HDF Member
Joined: Jun 2010
Posts: 5,105
Likes: 16
From: Blaine, WA
watch for these on the classifieds- i have picked up a few sets for about 1/2 price
both versions should be marked as epa compliant for 96/103/110.
I know that the first version of the fatshots was not marked for the 110...so there is a A suffix added when the stamping was changed
the open end cap is compliant as the fatshots was introduced for 2010...same time as the cat.
that indicates how much an effect the cat has on sound- those pipes as stock are pretty darn loud on a catless header
the fatshot has a 2" perforated core- hold it up to light and you see all the way through it.
the baffle has a packing on the outside which is repackable and will require probably every 20 or 30K miles.
it comes with 10 disks and a 1.4" open end cap- the 1.4" hole is equivalent to 9 disks stacked in terms of flow
the nightstick is solid core- no perforations. because of this tinnier sounding- which is why I think the solid end cap came on that.
both of these made by supertrapp for S/E, all the 4" disks and end caps on ebay will fit.
On my 09 I use modified fatshots, I have selected the number of disks that works for what I do ( 8 left, 15 right) and usually a solid end cap
(all this assumes you can get your hands on a Security bit")
mike
both versions should be marked as epa compliant for 96/103/110.
I know that the first version of the fatshots was not marked for the 110...so there is a A suffix added when the stamping was changed
the open end cap is compliant as the fatshots was introduced for 2010...same time as the cat.
that indicates how much an effect the cat has on sound- those pipes as stock are pretty darn loud on a catless header
the fatshot has a 2" perforated core- hold it up to light and you see all the way through it.
the baffle has a packing on the outside which is repackable and will require probably every 20 or 30K miles.
it comes with 10 disks and a 1.4" open end cap- the 1.4" hole is equivalent to 9 disks stacked in terms of flow
the nightstick is solid core- no perforations. because of this tinnier sounding- which is why I think the solid end cap came on that.
both of these made by supertrapp for S/E, all the 4" disks and end caps on ebay will fit.
On my 09 I use modified fatshots, I have selected the number of disks that works for what I do ( 8 left, 15 right) and usually a solid end cap
(all this assumes you can get your hands on a Security bit")
mike
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
ball park..
because we get more flow from the right side...I have an uneven disk count L/R
to make it look right, I have a solid cap in the middle of the left side disk stack...you'll see the line in the pic below ( these are my supertrapps)
and I use solid end caps...most of the time. the caps in the pic are 1 version of what is available, there are also thin stainless caps which is what i use in that above left stack.
or put a black painted solid cap inboard of the open end cap- these are fatshots...and there is a solid cap in there:
( the black trim ring can also be polished which looks nice)
or get some snuf r nots, which allow open/close with an allen wrench...that's what I have on right now as I was doing some group rides and wanted to be heard a little better by other riders
mike
because we get more flow from the right side...I have an uneven disk count L/R
to make it look right, I have a solid cap in the middle of the left side disk stack...you'll see the line in the pic below ( these are my supertrapps)
and I use solid end caps...most of the time. the caps in the pic are 1 version of what is available, there are also thin stainless caps which is what i use in that above left stack.
or put a black painted solid cap inboard of the open end cap- these are fatshots...and there is a solid cap in there:
( the black trim ring can also be polished which looks nice)
or get some snuf r nots, which allow open/close with an allen wrench...that's what I have on right now as I was doing some group rides and wanted to be heard a little better by other riders
mike
Road Captain
Joined: Jul 2012
Posts: 506
Likes: 7
From: Charlotte, NC
I had and sold some fatshots, the same as the nightsticks. Just have the same phsst sound which I did not like. Other than that they are very nice slip ons. Check out the sound before you drop a load of $. They and other slip ons new are big $.
Thread Starter
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Ultimate HDF Member
Joined: Jun 2010
Posts: 5,105
Likes: 16
From: Blaine, WA
Ya, it looks like it - there is a bolt on the end of them. Only concern doing that is that if you get a baffle not already drilled for the end cap adapter plate then it seems like you'd have to drill them pretty much perfect or the end cap won't fit correctly. Changing baffles would certainly be the least expensive route.
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Road Warrior
Joined: Aug 2008
Posts: 1,784
Likes: 92
From: Michigan
Save your money and just keep the stock mufflers.
Mine were plenty loud after the de-cat and now have went with the 2/1/2 head pipe and the sound went up a little more. Just for the heck of it I installed my freshly re-packed Rush 1 3/4" and the sound was too much and the butt dyno said no gain in performance. IMO the stock mufflers are great and after a 300 mile day that sound is about all I want to hear. Another good thing about running stock mufflers is the sound cops cant say or do a thing.
Mine were plenty loud after the de-cat and now have went with the 2/1/2 head pipe and the sound went up a little more. Just for the heck of it I installed my freshly re-packed Rush 1 3/4" and the sound was too much and the butt dyno said no gain in performance. IMO the stock mufflers are great and after a 300 mile day that sound is about all I want to hear. Another good thing about running stock mufflers is the sound cops cant say or do a thing.
Last edited by Just Me; Jun 17, 2014 at 07:51 PM.
So yesterday I finished installing the decatted stock header and the SE Street Cannons. I'd read about these getting loud after the cat was removed but it just didn't seem like they would since they were so quiet with the cat installed - barely louder than stock if at all. Well, they ARE louder, not stupid **** off the hood loud but louder than I was looking for. I'd say similar to the Samson Powerflow 2 into 1 I had on my Dyna........which was fine as it was balanced by wind noise. Riding behind the BW fairing the street cannons are now more than I was after. Thought about changing the baffles but the end can's attach to the installed baffle. So can someone suggest something that would bring me back to just a touch louder than stock? What about the stock slip-ons..............do they flow any good or not? Here's some sound clips.
NBC - YouTube
NBC - YouTube