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Getting a tacho drive fixed on a classic racing bike

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sbwhart:
Great job John

You've really transformed it  :clap: :clap: :clap: :clap:

Cheers

Stew

Darren:
Lovely finish John, looks factory now..... :thumbup:

John Stevenson:

--- Quote from: bogstandard on September 22, 2009, 04:48:54 PM ---You've just reminded me John, so I have popped out to the shop and got my notes.

Readings when I checked my lathe for doing imperial threading.

I decided to check using the 16 TPI I already had set up. Which should give 0.0625" movement per revolution.


No of turns on chuck       Saddle movement

  2                                    0.124"
  4                                    0.249"
  8                                    0.498"
 16                                   0.998"
 24                                   1.498"
 32                                   1.998"
 40                                   2.498"
 48                                   2.998"

So it looks like there was a minute amount of backlash to take up at the beginning, then after that, everything was absolutely perfect. So now I know that at least I can cut 16 TPI and know it is correct. I think I will do a few more different settings, just to see if it is still as accurate.

John

--- End quote ---

magic.
piece of mind for when you come to do any other imperial work.

John S.

dsquire:
John

You have got her looking good now John. Good job.  :ddb: :ddb:

Cheers :beer:

Don

John Hill:
Nice polish work there John, perhaps you could spend a bit of time with the Autosol on my Douglas next time you call by? :lol:

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