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  • Baffles, more...

    rsgrob Excellent info thanks mate. Explains it well. (One of the nice things that I like about SS is that you can Silver Solder it).
    I'm interested in how the rear fixed baffle aligns with the front removable baffle. Because the front muffler inlet hole doesn't align with the rear outlet. Looking at the late type and also an earlier pre-war 'fatter' type, there's an offset, I'll post a pic to clarify. Click image for larger version

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    • joolstacho
      #6
      joolstacho commented
      Editing a comment
      Yup. But looking at it, I can't imagine it making much difference. It would probably just add a bit more turbulence, -big pressures in there. Hate to say it, but the only way to really know would be to dyno a 'before and after'.

    • rgsrob
      #7
      rgsrob commented
      Editing a comment
      Your probably right- but will have to be the "seat of the pants" dyno.!

    • joolstacho
      #8
      joolstacho commented
      Editing a comment
      The trouble is with that particular 'dyno', is you'd need to wear really effective earplugs because just the slightest exhaust noise difference can fool us into thinking performance has changed, when in fact it's just the noise - perception.
    Posting comments is disabled.

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  • Baffles, more...
    by joolstacho
    rsgrob Excellent info thanks mate. Explains it well. (One of the nice things that I like about SS is that you can Silver Solder it).
    I'm interested in how the rear fixed baffle aligns with the front removable baffle. Because the front muffler inlet hole doesn't align with the rear outlet. Looking at the late type and also an earlier pre-war 'fatter' type, there's an offset, I'll post a pic to clarify. ...
    11-24-2019, 02:42 AM
  • Baffle + measurements & Baffle types
    by joolstacho
    The previous drawing didn't include measurements, this one does. Hopefully it'll work ok. It's a pdf file so I presume you'll need Acrobat on your computer to 'read' it.
    Also, if anyone knows the differences between the earlier and later Fishtail baffles I'd like to know, particularly about the rear fixed (welded in) baffle. Is it the same in both types or not?
    FixedBaffle#2.pdf...
    11-01-2019, 04:53 AM
  • Some handy thread sizes
    by joolstacho
    Here's a list of some useful thread sizes. ...
    10-28-2019, 11:54 PM
  • PDF upload test - Baffle pattern
    by joolstacho
    This is a pdf of a drawing I made for the final fixed baffle in a Fishtail. To enable / aid fabrication.
    I have added a second version which is more useful because it has measurements see: FixedBaffle#2.pdf...
    10-26-2019, 11:07 PM
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