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Baffle for Open Megaphone with Reverse Cone

Started by SB107, December 07, 2020, 10:56:09 AM

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Hossamania

If the government gives you everything you want,
it can take everything you have.

C-Cat

If you're asking, my hearing isn't good. Next long ride I'll be wearing them. I wore them last year, unless I wasn't going far. It will be quieter when I swap the muffler out
124ci. 07 Streetbob 161/145
110ci. '11 Roadglide  129/127

Hossamania

Quote from: C-Cat on June 29, 2021, 08:31:04 PM
If you're asking, my hearing isn't good. Next long ride I'll be wearing them. I wore them last year, unless I wasn't going far. It will be quieter when I swap the muffler out

:up:
If the government gives you everything you want,
it can take everything you have.

SB107

I have a dyno session planned for July 9th. Also have an old style guppy on the way from a friend to compare it to.
Mutant Motors 124"
161/148 STD, 158/145 SAE

98fxstc

Quote from: SB107 on July 01, 2021, 07:13:23 AM
I have a dyno session planned for July 9th. Also have an old style guppy on the way from a friend to compare it to.

Will be an interesting comparison
Hope it ticks the boxes for you

SB107

Quote from: 98fxstc on July 01, 2021, 07:29:57 AM

Will be an interesting comparison
Hope it ticks the boxes for you

He told me the guppy was quiet. If mine compares in performance I might leave it in. Trying to talk him into selling it to me.
Mutant Motors 124"
161/148 STD, 158/145 SAE

C-Cat

that will be an interesting comparison.  Do you have forward controls?
124ci. 07 Streetbob 161/145
110ci. '11 Roadglide  129/127

SB107

Quote from: C-Cat on July 02, 2021, 02:52:26 AM
that will be an interesting comparison.  Do you have forward controls?

No I have mids. With my current bars forwards would be dangerous with this power lol
Mutant Motors 124"
161/148 STD, 158/145 SAE

C-Cat

I was going to have a Guppy made for my Dyna. I was told by Brian Trusdale only with Forward Controls.
124ci. 07 Streetbob 161/145
110ci. '11 Roadglide  129/127

SB107

Mutant Motors 124"
161/148 STD, 158/145 SAE

C-Cat

Quote from: SB107 on July 01, 2021, 07:13:23 AM
I have a dyno session planned for July 9th. Also have an old style guppy on the way from a friend to compare it to.
Did you get to do a comparison on the Dyno? I've ben riding mine around with earplugs. Much easier on the ears. I have to say I'm missing the Boarzilla exhaust as far as  general riding and having power everywhere. The big primaries/collector and short pipe do make great peak power, although you really need to be on your game shifting quickly not to drop rpm's and staying off the limiter. Not easy with such a peaky pipe. I'm definitely gaining on it. Going to finish the summer out with this and in the spring get to a dyno and try out the supertrapp muffler with longer collector. I do have a Boarzilla on hand if I decide  to run it.
124ci. 07 Streetbob 161/145
110ci. '11 Roadglide  129/127

SB107

Quote from: C-Cat on August 05, 2021, 11:56:59 PM
Did you get to do a comparison on the Dyno? I've ben riding mine around with earplugs. Much easier on the ears. I have to say I'm missing the Boarzilla exhaust as far as  general riding and having power everywhere. The big primaries/collector and short pipe do make great peak power, although you really need to be on your game shifting quickly not to drop rpm's and staying off the limiter. Not easy with such a peaky pipe. I'm definitely gaining on it. Going to finish the summer out with this and in the spring get to a dyno and try out the supertrapp muffler with longer collector. I do have a Boarzilla on hand if I decide  to run it.
[/quote]

No. I doubt I will get a change to run the guppy baffle in it but oh well. I bought a piece of tubing to use but my calipers were set with a different zero which I didn't notice until I turned the ID way too big.

We were letting it idle before we changed the oil and the pipe broke where the trans bracket was welded on. The trans bracket was too thick (1/2"), and the weld was absorbing all of the vibration. The fabricator knew exactly why it broke the minute he saw it, and has a plan to fix it correctly as well has support the meg. Before it was just welded to the front head pipe 

[attach=0,msg1392676]
Mutant Motors 124"
161/148 STD, 158/145 SAE

C-Cat

 :I'm going to give mine a good look over now. That sucks
124ci. 07 Streetbob 161/145
110ci. '11 Roadglide  129/127

SB107

About a year later my bike is on the dyno. picked up 10-15ftlbs between 2500 and 4000, and only lost around 3hp. Ill post up the gains in my thread in dyno charts.
Mutant Motors 124"
161/148 STD, 158/145 SAE