Making a header for an odd app

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DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sat Feb 11, 2017 10:43 am

So
It os looking like the full tri y is not going to happen.
So it is a 4 into 2 paired correct.
I am looking at anti reversion chambers and the theory bihind them. Wondering if this will help a 2 into 1 header.

Sample motorcycle header.
Image

And my scooter with a 2387.

Image

Does anyone here have any experience with 2 cylinder headers and/or anti reversion chambers?

Image

DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sat Feb 11, 2017 10:54 am

Just another pic for reference.

Image

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sideshow
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Re: Making a header for an odd app

Post by sideshow » Sat Feb 11, 2017 6:25 pm

Weird, I spent the morning thinking about anti-reversion cones into a more mundane exhaust to make the heat riser (center mount carburetor) work better. And until you posted that, I have never seen one.

I never knew how Jim Fueling actually made them, I was thinking washer welded into a fish scale like step.
Yeah some may call it overkill, but you can't have too much overkill.

oldschool5er
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Re: Making a header for an odd app

Post by oldschool5er » Sun Feb 12, 2017 2:41 am

Jims were a tapered cone welded right in at the exhaust flange.

DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sun Feb 12, 2017 11:24 am

In the harley world it is common for folks to get pipes that are "cool looking" instead of tuneable. Lots of them are too large diameter and too short.
So those cones are used all the time to bring them closer to tune.

Image

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ps2375
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Re: Making a header for an odd app

Post by ps2375 » Mon Feb 13, 2017 12:27 pm

Looks like a venturi.

DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sun Feb 26, 2017 4:27 pm

First can mocked up.

Image

helowrench
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Re: Making a header for an odd app

Post by helowrench » Sun Feb 26, 2017 5:40 pm

That is some very nice work

DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sat Apr 29, 2017 7:01 pm

The oddball header is nearly all made and tacked up.
I had to lathe out a lot if the bits and pieces.

So it is a split header. 4 into 2.
1 and 3 paired .
2 and 4 paired.
1-5/8= od tube at the head.
Into 2-1/4" od anti reversion chamber
Then 1-3/4" od primaries 30" long
Then steep tri y style collector.
Then a short 2" od secondary
Then a 2-1/2" anti reversion chamber elbow.
Then a cone back to 2"


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Piledriver
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Re: Making a header for an odd app

Post by Piledriver » Sat Apr 29, 2017 10:15 pm

I love the crossover :twisted:
I, for one, regularly embrace our new robot overlords, as I am the guy fixing the robots...

DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sat Apr 29, 2017 10:21 pm

Crazy forum would not let me IMG link any size of pic from photobucket.
I dont know what is going on.
So I URL linked the whole album.
I wish the site was easier to IMG pic too.

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Piledriver
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Re: Making a header for an odd app

Post by Piledriver » Sat Apr 29, 2017 10:38 pm

Its being worked but IIRC photobuckets doing something different.
I, for one, regularly embrace our new robot overlords, as I am the guy fixing the robots...

DeathBySnuSnu
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Re: Making a header for an odd app

Post by DeathBySnuSnu » Sun Apr 30, 2017 6:59 am

Photobucket is loaded up with more ads and pop ups.
Almost unusable now.
Recently updated my Android phone to nougat and I have compatibility issues with photobucket mobile app. I have to use the desktop site now.

Has STF changes pic size or limitations?
Photobucket IMG links work everywhere else but here.

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petew
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Re: Making a header for an odd app

Post by petew » Mon May 01, 2017 7:46 am

Just read through your thread. Awesome stuff. I don't usually like trikes but your's is fantastic.

BTW, you can upload pics to STF like this at the bottomof the "full editor and preview" page.

attachments STF.jpg
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