modifying stock slip ons?
Thread Starter
|
Road Captain
Joined: May 2010
Posts: 698
Likes: 1
From: Texas Hill Country
modifying stock slip ons?
My son bought a 2012 street Bob..he is saving up for side shots...in the mean time we want a little better sound..anyone ever taken stock baffles and modified them?.
Seem to have 3 rivets holding them in.
Looking for something constructive to do on a quiet Saturday night
Seem to have 3 rivets holding them in.
Looking for something constructive to do on a quiet Saturday night
Ultimate HDF Member
Joined: Apr 2008
Posts: 5,384
Likes: 12
From: Out on Deranged
I didn't do it to my stock baffles, but if you drill out those rivets the baffles should come out easily enough. I'd reccomend removing maybe half of the wrap and slap em back in using ordinary self tapping or plain metal screws, take her out for a spin and if that's not enough take out some more, and you could also drill a hole in the tin plate at the far end of the baff itself. should only take you an hour or so. Make sure to have enough beer on hand to make the job last a little longer on a quiet sat night!
Thread Starter
|
Road Captain
Joined: May 2010
Posts: 698
Likes: 1
From: Texas Hill Country
Just took the baffles out.
. just for fun started it up
.. holy crap.. very loud. took the wrap off and put them back in.. not much better than stock...punched the plate out .. still not much difference... just bit the bullet and bought the set of cycle shack slip ons from ebay for now
. just for fun started it up
.. holy crap.. very loud. took the wrap off and put them back in.. not much better than stock...punched the plate out .. still not much difference... just bit the bullet and bought the set of cycle shack slip ons from ebay for now
Supporter
Joined: May 2011
Posts: 627
Likes: 2
From: Salem, OR
The baffles on my Fat Bob had wrap around them, then a layer of steel holed wrap around the inner pipe, and then the inner pipe had maybe 20 little holes at the end of the open section where it met a plate on the end. After tearing into a set its amazing they let air flow through at all. After I pulled mine, I ditched the wrap, cut off the steel sleeve, drilled holes in the end of the baffle itself on the outside, then cut openings on either side of the inner pipe and left the end plate in place so it would fool a broomstick test lol. Sounded pretty loud but not as nicely tuned as slip ons.
https://www.hdforums.com/forum/dyna-...b-baffles.html
https://www.hdforums.com/forum/dyna-...b-baffles.html
Last edited by xantasm; Apr 21, 2012 at 09:36 PM.
Thread Starter
|
Road Captain
Joined: May 2010
Posts: 698
Likes: 1
From: Texas Hill Country
I've gone as far as I am gonna on these stock ones.ordered the 2" slash down cycle shacks for now.until he can afford the side shots ..beer and eBay app are a dangerous combination
Tourer
Joined: Jan 2011
Posts: 440
Likes: 0
Trending Topics
Elite HDF Member
Joined: Apr 2008
Posts: 4,718
Likes: 11
From: Back in the Good Ole USA. South Carolina to be exact.
My son bought a 2012 street Bob..he is saving up for side shots...in the mean time we want a little better sound..anyone ever taken stock baffles and modified them?.
Seem to have 3 rivets holding them in.
Looking for something constructive to do on a quiet Saturday night
Seem to have 3 rivets holding them in.
Looking for something constructive to do on a quiet Saturday night
It was an improvement sound wise. The bike ran just fine.
Last edited by jluvs2ride; Apr 22, 2012 at 09:56 PM.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Novice
Joined: Mar 2012
Posts: 22
Likes: 0
From: Maryland
I've seen this done!
Yep. On my Fat Bob, I very carefully drilled the heads off the rivets and pulled out the baffles. I removed the Fiberglass wrapping and threw it away. I went to the hardware store and got a Hole saw that just fit the inside diameter of the baffle and a drill extension. I used this to drill the plug out of the baffle. I then reassembled the mufflers with new pop rivets.
It was an improvement sound wise. The bike ran just fine.
It was an improvement sound wise. The bike ran just fine.