cable shutter release, Speed Graphic...

[Dean Taylor]

hello

A beginner asks about a shutter cable release--are they standard size threads, or specific to the shutter?

Also, the right-side 'body release' on the 4x5 Pacemaker Speed Graphic calls for a heavy duty cable (versus the 'lighter touch' needed at the Copal 1 release?)...

B&H lists several:

(link)

thank you

Dean Taylor

[BrianShaw]

Modern cable releases are universal.

[Jac@stafford.net]

Brian is right for most of our purposes. It is unlikely you will find an incompatible cable release.
Sometimes you might find an early/old shutter that needs a stout long-throw cable, as you
noted. In that case, go for a robust model. I would not use one shorter than 6" because
they tend to 'push' the lens and cause movement.

For the record, here are the different threads. I have not yet found the version at top.

[Tin Can]

Anybody know the tap size of both American and EU cables, tap size, not die size.

In standard nomenclature, such 1/8th pipe, 1/16th pipe.

Those are helpful engineering drawings but do not ease finding a tap.

I think the taps are hard to find or custom.



I

[Jac@stafford.net]

cable release thread size
M3 X .5

described in ISO 6053:1979

_tap____drill (mm)___decimal inch
3 x .5_____2.5_______0.0984

Cannot find a drill size in American fractions. 2/16 gets us close.

same as
M3 x 0.5 2.50

[Jim C.]

I've found that any cable release will work for both the body release on the Pacemaker and on a lens shutter,
It really depends on how hard you push the cable release.

Jac, why not just use a M3 x .5 tap ?
Metric will some times convert to an odd fractional inch, metric taps are a dime dozen depending on where you buy.

[Jac@stafford.net]

Jac, why not just use a M3 x .5 tap ?
Metric will some times convert to an odd fractional inch, metric taps are a dime dozen depending on where you buy.

I mention that in my post. Agreed regarding finding taps and drills. I usually keep the tap and drill together in individual zip bags. Keeps it neat.

[Tin Can]

Another question/

It the female part on the shutter a pipe thread or simply straight?

Does it matter?

I see many sell M3 X .5 taps. I prefer to buy the best quality tap available, as when a tap breaks you now have a far bigger problem. I have sets of broken tap extractors that work sometimes, other times smashing taps up works and if all that fails it's time for the Metal Disintegrator. a very real and expensive tool.

Since we are working on irreplaceable items, it is best to get it right the first time.

[Jim C.]

Don't know if the female thread on a shutter is tapered or straight, my shuttered lenses are not accessible at the moment.
The thread on a Pacemaker body shutter release looks to be straight, hard to tell since there's only about 3 threads.

Agreed on repairing it right the first time, but as to irreplaceable, I wouldn't say that,
they're all rebuildable depending on your skills.
That's the difference between todays products and yesteryears.

[Jac@stafford.net]

Don't know if the female thread on a shutter is tapered or straight, my shuttered lenses are not accessible at the moment.
The thread on a Pacemaker body shutter release looks to be straight, hard to tell since there's only about 3 threads.

Manufacturers (US) quit making straight female sockets long ago. All are tapered now.

There is a German supplier of the tapered ISO standard cable release socket tools.
But you must read German.

http://www.rebell-tools.de/pdf/Rebel...017.pdf#page=8