cable shutter release: conical versus straight connector...

[Dean Taylor]

hello

For both the Graphex #2 and the Copal #1--is this cable release suitable:

http://www.bhphotovideo.com/c/produc...e_Release.html

More to the point: are some threaded connectors conical while others are straight.

We inserted the connector into the Graphex lens release--naturally, it seats only so far...is this acceptable?

thank you

[IanG]

That's fairly normal, the conical ends of cable releases are reasonably standard but the bit it screws into on a camera or shutter varies a bit. The release arms on some old shutters are tapped with a straight thread but the conical cable releases work perfectly.

Ian

[Jim Jones]

Dean, that Gepe cable release is correct for those shutters. Tapered threads engage securely with only a few turns. Straight threads for cable releases have been non-standard for many decades on most cameras.

[DrTang]

there are old shutters out there that require a straight thread..I'm thinking old compounds maybe .. a tapered will not hold in them

I try to hold onto any straight thread cable release I come across just for that reason

[Tin Can]

Looking at a Copal 1 shutter release hole is appears to be straight thread. I assume a tapered male thread simply fastens faster.

I just got two sets of 5-44 straight taps. Don't bother with cheap taps, the ones I got are already rusting and look terrible. However the same source had very nice ones for 7 times the cost, but well worth it.

I will use them in an attempt to fix an Ilex 5 which lost it's shutter release threading insert. It does have the chrome steel surround.

Suggestions welcome.

[IanG]

I regularly tap the release arms on TP (& similar) roller blind shutters with straight taps and never have a problem using them with the tapered ends on cables.

Looking at Copal 0, 1 & 3 shutters I'd agree with Randy that the thread for the cable release looks almost straight on the Copal #0 & #1 slightly more tapered on the #3, straight on my Compounds, more noticeable taper on my Compurs., It doesn't seem to matter as the tapered ends on cable releases fit all.

Ian

[Jac@stafford.net]

I just got two sets of 5-44 straight taps. Don't bother with cheap taps, the ones I got are already rusting and look terrible.

My good taps and dies are susceptible to rust because they are high-carbon-steel. And they were really expensive. The difficulty in buying inexpensive tools is because we cannot know just what grade of steel they are, or what kind of tempering was applied - until they break! I hate it when that happens. An old-school machinist I know can tell the composition of metals by grinding it, reading the spark color and pattern.

[Jac@stafford.net]

[...] It doesn't seem to matter as the tapered ends on cable releases fit all.

All except late model digital Leica M cameras. But that's not our problem here.

Got lots of spares for LF.

[IanG]

Got lots of spares for LF.

So have I - a job lot at a Camera Fair, 20+ for £10/$16

Ian

[Tin Can]

Last deal I got on them was 20 for $20 on eBay. NOS German.

10 disc. 10 Screw lock.

However Gepe Pro is better for Ilex.