:::RHMT::: Real Home Made Turbo

General Category => Fabrication => Topic started by: shadow on December 09, 2014, 11:29:35 PM

Title: lets talk exhaust baffles
Post by: shadow on December 09, 2014, 11:29:35 PM: so im making an exhaust for a motorcycle, mostly out of boredom, but also the fact that its saving me a few hundred bucks lol.

now most baffles ive seen look like this:
(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fwww.ducati.org%2Fforums%2Fattachments%2Fhow-tos%2F6031d1216984447-guide-stock-exhaust-baffles-removal-ducati-1098-848-perf_core1.jpg&hash=c4398e3a32772b1df2f01f7bb73ab051520c8b59)

the one i made, has less holes, looks kind of like this(but the holes all the way) :
(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fwww.cycle-shack.com%2Fcycle%2Fagora.cgi%3Fpicserve%3D2006%2Flg%2F1527XP.jpg&hash=47b8c0c2f70c3b69eee305c5cde477c0b3fc2fd3)

also, made an "end cap" on mine, kind of looks like so:
(https://www.motomummy.com/images/products/m4stage2.jpg)

now my question, how do the perforations effect sound? the more holes the more it quiets sound? or less holes less sounds? or does it have an effect on tone whether its lower or higher?
Title: Re: lets talk exhaust baffles
Post by: shadow on December 09, 2014, 11:51:24 PM: ****nsfw******

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(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fnakedbrunetteteen.com%2Fwp-content%2Fuploads%2F2012%2F08%2Fariel_rebel_flower_power_12.jpg&hash=d980394e55269df91e931a6f408f1b4740f22043)

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(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2F4.bp.blogspot.com%2F-2oU-8h0x_xw%2FUJJXKY7l8xI%2FAAAAAAAAAik%2Fl7b0jpHLv9o%2Fs1600%2Ftoriblackts053109-1_037.jpg&hash=ff2a99cb4047a555fe1247df704f525e3c4f410f)

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(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fwww.twistysblog.com%2F2009-01-27%2Fdiane04.jpg&hash=622760abaa54702677d030c1339d5cda9535291f)

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(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fpromo.glamourdollars.com%2Fviparea%2Fcapri-anderson-051310-p01%2F10.jpg&hash=60af45ed02aa7eb0b4d2efb1a6a82747e8ea73b4)
Title: Re: lets talk exhaust baffles
Post by: turbohf on December 11, 2014, 01:12:30 PM: Capri.....

what where you talking about again?... I have assumed that the one with more holes would keep the sound down. but also curious.
Title: Re: lets talk exhaust baffles
Post by: 92CXyD on December 11, 2014, 03:14:03 PM: More holes would be better.... wait are we talking about the girls. ;DDD
Title: Re: lets talk exhaust baffles
Post by: shadow on December 11, 2014, 09:30:55 PM: lmao.

are more holes going to muffle sound more?
Title: Re: lets talk exhaust baffles
Post by: 92CXyD on December 12, 2014, 12:13:49 AM: Quote from: shadow on December 11, 2014, 09:30:55 PM
lmao.

are more holes going to muffle sound more?

I know if it was glass packs and louvered hole have to be facing the right direction.

More holes less flow restriction
Title: Re: lets talk exhaust baffles
Post by: turbohf on December 12, 2014, 02:50:07 AM: I would think that the more holes give more escape for the sound to go threw and into the packing. keeping it quite.

where did you get that baffle with the shit ton of holes?
Title: Re: lets talk exhaust baffles
Post by: shadow on December 13, 2014, 12:45:19 PM: You can find it online. I made mine and it has less holes. Lol. Shit is ghetto fab.
Title: Re: lets talk exhaust baffles
Post by: DSharp on December 15, 2014, 07:48:43 PM: Baffles?

(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fi51.photobucket.com%2Falbums%2Ff359%2Fdbsharp%2Fbuy_zpscf58ca09.png&hash=ea4f0b2bdcce9b2350f45afe1a4afc000d3f1703)
Title: Re: lets talk exhaust baffles
Post by: weirtech on December 16, 2014, 12:40:41 PM: the size of the muffler body and the packing material will have more of an impact on sound deadening than the number of holes, but yeah, more holes will increase the efficiency.

aaron
Title: Re: lets talk exhaust baffles
Post by: turbob16hatch on March 07, 2015, 08:29:11 AM: Quote from: weirtech on December 16, 2014, 12:40:41 PM
the size of the muffler body and the packing material will have more of an impact on sound deadening than the number of holes, but yeah, more holes will increase the efficiency.

aaron

This, volume of chamber, volume of packing, density/absorption of packing, number and size of perforations is about all that needs to be considered for a diy muffler.
Title: Re: lets talk exhaust baffles
Post by: Minor Threat on March 08, 2015, 02:54:49 PM: Also, the shape of the holes has an effect as well.
Title: Re: lets talk exhaust baffles
Post by: lsone_chevelle on April 27, 2015, 06:19:58 PM: Looks restrictive as fuck. What are you trying to gain?

Look at how FTE diesel does their resonators.
Title: Re: lets talk exhaust baffles
Post by: shadow on April 28, 2015, 02:19:28 AM: motorcycle exhaust.