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With the arm mounted at 214mm and 66/120.9 null points

67.197.172.249

In Reply to: RE: The tonearm headshells have extra long slots posted by B.K. on January 17, 2010 at 09:37:44

most carts end up barely fitting due to the cartridge and headshell pins being so close together. Many cartridges will not mount at all at this setting.
Remember, Baerwald / Lofgren A geometry typically pushes most cartridges further out towards the end of the headshell and away from the headhshell pins. The length of the slots is irrelevant in this case as I'm not away of any alignment geometry that could utilize them at the Jelco prescribed mounting distance. Please enlighten me if you're aware of one.
What makes this most odd - Jelco spec's a 229mm effective length - not sure what the null points would be on a cart mounted to that effective length - which is impossible to achieve with every cartridge I have ever seen.
If you look at the technical drawing you posted in your other response, you'll see that the STYLUS is spec'd to fall right at the front of the headshell slots and the distance from the pivot point to the stylus tip SHOULD be 229mm - as I clearly show in the other post it's not even close to 229mm.

"I'll play it and tell you what it is later..." - Miles Davis

Vynyltap's System

Edits: 01/17/10 01/17/10

Follow Ups:

In your original post, you didn't show that the effective length was not equal to 229mm. - B.K. 03:05:06 01/18/10 (3)
"as I clearly show in the other post it's not even close to 229mm"

In your original post, you didn't clearly show that the effective length is not even close to 229mm.

Unless I am reading the wrong post.

Also you are wrong about fitting cartridges to the headshell; most cartridges will fit even with their mounting bolts as far back in the headshell as the slots allow.

BK
- you're reading the post wrong - I clearly say it's 232mm. - VynylTap 12:15:40 01/18/10 (2)
  and even prove it by showing PICTURES of it aligning perfectly with the 232mm arc on the Baerwald template.
  
  "I'll play it and tell you what it is later..." - Miles Davis
  
  Vynyltap's System
  - No, YOU are READING badly. - B.K. 00:49:56 01/19/10 (1)
    I stated that you failed to show that the effective length is NOT 229mm.
    
    Read it again.
    
    BK
    - all it takes is looking at the technical drawing you're basing all your assumptions on - VynylTap 14:34:45 01/19/10 (0)
      and looking at where my cartridge measures 232mm to determine that. It couldn't be simpler.
      
      "I'll play it and tell you what it is later..." - Miles Davis
      
      Vynyltap's System

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