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  • Baffle + measurements & Baffle types

    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
    Attached Files

    • rgsrob
      #1
      rgsrob commented
      Editing a comment
      drawing looks about right. I replaced my split baffle by making one from stainless exhaust tube, I used the old baffle as a drill jig by slipping it over the tube and dril through hole locations..
      Then from a flat sheet of stainless I formed a cradle with wrap around fingers to support the new baffle. This was welded to the tube ,
      The bottom part of the cradle is a flat strip to be sandwiched back in place at the bottom as /the original
      Finally added the top hot end piece(no thru hole).
      I used the removable baffle as a locator yo locate the soon to be fixed baffle correctly prior to weld up of the fishtail

    • joolstacho
      #2
      joolstacho commented
      Editing a comment
      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. (But I don't seem to be able to do it in this Articles post. I'll send a heads-up anyway.

    • rgsrob
      #3
      rgsrob commented
      Editing a comment
      apologies for not replying to you.
      =The fixed baffle is actually aligned with the bottom of the silencer , the rear top hat location for the removable baffle is welded to the back of the fixed baffle. On my recent 51 MAC project, same silencer as KSS, rigid MSS etc. It was supplied with removable baffle but no fixed baffle.
      The pipe to silencer clamp providing the only support for the removable baffle. It was a bit noisy so I ended up boding a washer into the end of the removable baffle. I have never seen an original early silencer for the rigid bikes so cannot comment on whether they had a fixed baffle or any other internal support for the removable baffle.
    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, 03:42 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, 05:53 AM
  • Some handy thread sizes
    by joolstacho
    Here's a list of some useful thread sizes. ...
    10-29-2019, 12:54 AM
  • 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...
    10-27-2019, 12:07 AM
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