M800 ink capacity

[hari317]

Ive just disassembled both a Pelikan 800 & a vintage Pelikan 400 aiming to compare their "potential" ink intake.

...

 

Conclusion : Contrary to what one should expect, the Pelikan 800 has 30% less "potential" ink intake capacity compared to a (vintage) Pelikan 400.

 

Francis, thanks, your replies were very precise and helpful. Can you comment on the stroke lengths and bore dia and stroke of the modern M400, how does it compare to the M800? do the modern 400 and 800 have similar piston mechanisms except for material?

[adallak]

Francis, I have edited my previous post. Please find the correct patent link in the edited post! Sorry for confusion.

 

That's it !

Thank you very much adalak !

You are very welcome!

[fountainbel]

Francis, thanks, your replies were very precise and helpful. Can you comment on the stroke lengths and bore dia and stroke of the modern M400, how does it compare to the M800? do the modern 400 and 800 have similar piston mechanisms except for material?

 

hi Hari,

Just dis assembled a modern Pelikan 400. The piston bore is 8.2mm, identical to the 800.

The piston stroke happens to be 24.5mm, hence the potential ink intake is 1.29ml

On modern Pelikan 400 & 800 pens both the screw spindle & nut bushing are identical.

Resuming :

Modern 400 : piston bore 8.2mm, piston stroke 24.5mm, potential ink volume:1.29 ml

Modern 800 : piston bore 8.2mm, piston stroke 26 mm , potential ink volume: 1.37 ml

Vintage 400 : piston bore 9.0 mm, piston stroke 31 mm , potential ink volume:1.97 ml

Francis

[hari317]

On modern Pelikan 400 & 800 pens both the screw spindle & nut bushing are identical.

Resuming :

Modern 400 : piston bore 8.2mm, piston stroke 24.5mm, potential ink volume:1.29 ml

Modern 800 : piston bore 8.2mm, piston stroke 26 mm , potential ink volume: 1.37 ml

Vintage 400 : piston bore 9.0 mm, piston stroke 31 mm , potential ink volume:1.97 ml

 

Thanks Francis, much much appreciated.

 

[Bill D]

That's very interesting. Thank you for taking the time to measure them and to share your findings.

 

 

[RoyalBlue]

Take a look at this page: the transparent demonstrator may give you a rough idea of the capacity. http://images.google.co.uk/imgres?imgurl=h...l%3Den%26sa%3DG

 

Best wishes,

Tom

[fountainbel]

Just dis assembled also a modern Pelikan 600 & 1000 .

The piston bore on both is 8.2mm, identical to the modern 800 & 400.

It looks Pelikan went for a profound standardization of the filling mechanism parts, making the screw spindle, screw nut bushing & piston seal identical on their complete range of pens.

This is surely beneficial in reducing production costs.

Drawbacks being :

-Contrary to what is logically expected, the potential ink intake is not proportional to the size of the pen.

-The potential ink intake of a modern 1000 is only slightly higher as a modern 400 & considerably lower as a vintage 400.

 

Resuming :

Modern 400 : piston bore 8.2mm, piston stroke 24.5mm, potential ink volume:1.29 ml

Modern 600 : piston bore 8.2mm, piston stroke 26 mm, potential ink volume:. 1.37 ml

Modern 800 : piston bore 8.2mm, piston stroke 26 mm , potential ink volume: 1.37 ml

Modern1000: piston bore 8.2mm, piston stroke 28 mm , potential ink volume: 1.47 ml

Vintage 400 : piston bore 9.0 mm, piston stroke 31 mm , potential ink volume: 1.97 ml

Note that I'm a fervent Pelikan fan, I love their looks, smooth nibs & also the filling system.

I'm only disappointed in the low potential ink intake of their modern pen range.

 

Francis

[Joe in Seattle]

I love this forum! And you've saved me lots of $. I was thinking of buying an M800 for a larger ink capacity. But, I already have a vintage M400 that works perfectly; it's just blue not green. I think I'll keep it and use it.

 

Now, I have to think of another reason that I NEED an 800, or maybe a Toledo.

[ele]

I love this forum! And you've saved me lots of $. I was thinking of buying an M800 for a larger ink capacity. But, I already have a vintage M400 that works perfectly; it's just blue not green. I think I'll keep it and use it.

 

Now, I have to think of another reason that I NEED an 800, or maybe a Toledo.

If it is blue than wouldn't it be a modern m400, thus holding much less than the vintage 400 made in the 50s?