Sheaffer Imperial 4 Sac Size ?

[Paul-H]

Hi all

A quick question I hope

Anyone know what the correct Ink Sac size is for the Sheaffer Imperial IV

My usual supplier of these things supplies a Necked #15 in their Touchdown kit which I find far to small for the Imperial IV Touchdown, I find it to be more like a standard #16.

For those of you who do these what size sac are you using

Her is a photo showing the Necked #15 against the nipple on the Imperial IV

46543

[Chrissy]

The "necked" portion looks too small. It has to be either a regular 15 or 16. Can you not measure the nipple?
It almost looks like it might adapt to a regular converter.

[Paul-H]

The nipple measures between a #16 & #17.

Looks to like it would take a standard 16 and I have some on order to test, I was just concerned about sac wall thickness on a standard sac compared to a touchdown sac is it thin enough to work. Or are they all The same, standard, touchdown, snorkel?

Paul

[Paul-H]

With the necked sacks are they measuring the thin necked end or the wider end, as the one shown above is #15 necked and the neck is much smaller than a standard #15

Paul

[Chrissy]

The nipple measures between a #16 & #17.

Looks to like it would take a standard 16 and I have some on order to test, I was just concerned about sac wall thickness on a standard sac compared to a touchdown sac is it thin enough to work. Or are they all The same, standard, touchdown, snorkel?

Paul
I don't know if their sac wall thickness changes between standard and touchdown. You could send them an email and ask. I thought they were the same when I last bought a kit.