Fountain Pen Refill/Pump Dimensions

[JimGo]

OK, I need some help, please. I don't make many fountain pens (only 1 to date), and don't have any in my current "stash" of goodies, but I'm playing with some alternative designs for a fountain pen and need to know the dimensions of the refills and pumps. IIRC, different pumps and refills made by different manufacturers are different sizes (but most have a common adapter size), so any assistance would be greatly appreciated!

 

[mewell]

Jim - The "International" style cartridge that most (all?) the FPs use is 1.51 inches overall length and the Schmidt pump that come with CSUSA kits is 2.983 inches overall. The Cartridge is .288 inches in diameter at the wide point and the pump is .305. The pumps I get from PSI is 2.75 in length and .30 in diameter.

If you need more info let me know.

Mark

 

[JimGo]

Perfect, thanks Mark!