Thread on Salvo goodman screws?

[Janos]

Does anyone know the thread on the screws that hold the Salvo Goodman handle together? The small SS screws that scre into the side of the goodman, and are unscrewed slightly to adjust it.

I've lost one of mine

Janos

[Spacehopper]

Aha, confirmation of what we've all assumed for a long time.

Janos has a screw missing



Gareth

[David]

Originally Posted by Spacehopper

Janos has a screw missing

From another with a screw lose :-)

1/4 BNC will fit

same as the screw on your tripod to fix camera on with.

[Mark Chase]

Originally Posted by David

From another with a screw lose :-)

1/4 BNC will fit

same as the screw on your tripod to fix camera on with.

Eh? its a lot smaller than that surely?

He is talking about the little screw in the side of the goodmans handle

ATB

Mark

[Janos]

Originally Posted by Mark Chase

Eh? its a lot smaller than that surely?

He is talking about the little screw in the side of the goodmans handle

Yup it's the tiny screw.

I've also PMed Phill, but thought it would be a useful piece of information to have on t'interweb.

David - is the 1/4 BNC the thread for the white plastic focussing screw?

Janos

[jamesp]

WTF is a BNC thread?

Camera tripod is Whitworth.

Salvo being Yank will more than likely be UNF (unified national Fine) and if it is small ie under 1/4" it will probably be an attachment series thread.

That means it is identified by a number rather than nominal size, easiest way to work out which one is count the number of threads per inch of thread (TPI)
TPI - Attachment series number - roughly Diameter
28 - 12 - 5.5mm
32 - 10 - 4.8
36 - 8 - 4.2
40 - 6 - 3.5
44 - 5 - 3.175(1/8")
48 - 4 -- 2.8
56 - 3 - 2.5
64 - 2 - 2.2
72 - 1 - 1.85
80 - 0 - 1.5

If you are getting 24 TPI or fewer TPI for the diameter its UNC (coarse).

Before some f wit says they are, BSW and UN are not the same.

Hope that helps.

[David]

Originally Posted by Janos

David - is the 1/4 BNC the thread for the white plastic focussing screw?

yep sorry I thought thats the one you lost :-)

now trying to work out which one you want :-(

[David]

ok so I measured it

but got strange results :-)

it seems to be 0.8 TPI does not seem to match my imperial thread gauge
and its 3.40 mm diameter 0.134 of an inch


off to google now

[jamesp]

Originally Posted by David

ok so I measured it

but got strange results :-)

it seems to be 0.8 TPI does not seem to match my imperial thread gauge
and its 3.40 mm diameter 0.134 of an inch


off to google now

Think you might mean 0.8 mm pitch. ).8 tpi would mean about two turns in the length of your little finger.

0.8mm pitch works out at 31.xxxx T(hreads) P(er) I(nch), which at 3.4mm diameter makes it 6 UNC as a prime candidate.

exact figures would be 32 tpi, 0.138" diameter(3.505mm)

[David]

Originally Posted by jamesp

Think you might mean 0.8 mm pitch. ).8 tpi would mean about two turns in the length of your little finger.

0.8mm pitch works out at 31.xxxx T(hreads) P(er) I(nch), which at 3.4mm diameter makes it 6 UNC as a prime candidate.

exact figures would be 32 tpi, 0.138" diameter(3.505mm)

yes James your right :-)

BSC (British Standard Cycle) Thread Data

5/32 seems to fit almost :-)