Noodler's Ahab Flex Fountain Pen - Green Mountain

Product Code N15041
The Ahab flex pen was introduced in late 2011 and is currently Noodler's most popular fountain pen. It features a steel flexible #6 nib and a slide piston mechanism.
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Noodler's Ahab Flex Fountain Pen - Green Mountain

The Ahab flex pen was introduced in late 2011 and is currently Noodler's most popular fountain pen. It features a steel flexible #6 nib and a slide piston mechanism. If you'd like, you can even remove the piston mechanism and use the pen as an eyedropper for a massive 6ml ink capacity. The Ahab is made of a celluloid derivative and is technically biodegradable and formed from a "renewable resource". The vegetal resin body of this pen may show particles or striations within the material. This is most noticeable in demonstrators and bright colors.

The Noodler's flex pens were designed for the hands-on tinkerer - they are made to be taken apart and adjusted. The nib and feed pull right out and can be adjusted and heat set for optimal performance. Don't be afraid to get a little ink on your fingers while you learn how to use this pen.

As a simple rule of thumb for writing with a flex pen, just apply slight pressure on your downstrokes, which will spread the tines and increase the line width, achieving that optimal line variation. Make sure to go slowly so that the ink can keep up with your writing. As with any flex pen, it just takes practice!

Due to the residual machining oils used when cutting the feeds for these pens, we highly encourage you to give the pen a good flush before use. We recommend any of the following options: distilled water, water with a touch of dish soap, a pre-packaged pen flush, or a solution of 10% clear ammonia to water. This should resolve most ink flow issues!

Usually Ships in 1 to 2 Business Days
Fountain Pens
Pen Model
Noodler's Ahab
Body Color
Body Material
Cap Type
Compatible inks & refills
Bottled inks
Filling Mechanism
Eyedropper, Piston
Grip Material
Nib Color
Nib Material
Nib Size
Diameter - Body
14mm (0.6in)
Diameter - Cap (without clip)
15mm (0.6in)
Diameter - Cap (with clip)
20mm (0.8in)
Diameter - Grip
9.9mm (0.4in)
Length - Body
128mm (5in)
Length - Cap
60mm (2.4in)
Length - Nib
20mm (0.8in)
Length - Overall (Closed)
139mm (5.5in)
Length - Overall (Posted)
170mm (6.7in)
Weight - Body
12g (0.4oz)
Weight - Cap
6g (0.2oz)
Weight - Overall
18g (0.6oz)
Max Ink Capacity - Eyedropper
Max Ink Capacity - Piston/Vac
Noodler's Ahab Flex Fountain Pen - Green Mountain is rated 4.1667 out of 5 by 18.
Rated 5 out of 5 by from A great unique tipped pen. Of the variety of fountain pens I have in my ever-growing collection, the Noodler's Ahab Flex nib is one of the most versatile. Unique in that the nib split runs further up than most nibs allowing it flex like no other. As an artist, something that demands this sort of flexibility, you would either have to switch pens constantly or rely on a brush pen. I am a fan of neither of those two the former being expensive and disposable and the latter wearing out over time very quickly. So the best option out of all is this pen. If I am going anywhere to draw, I would certainly set aside the Sheaffer, Pilot, Parker and Platinum and use this for that great variety it provides.
Date published: 2014-10-20
Rated 5 out of 5 by from Noodler's Ahab Flex Nib Piston Fill Fountain Pen - For $20 the Ahab is a real steal. It is a very nice fountain pen, and its nib, like all flexible nibs, will write with some "spring" in it, depending on the quality of the paper used. No flexible nib will write well on poor paper. I love to use this nib on Rhodia paper. It allows the ink to flow nicely onto the paper without feathering. Granted, the Ahab does not have the flexibility of some fountain pens from the 1930s, but no modern pens do, and I am quite pleased with its performance.
Date published: 2014-10-20
Rated 5 out of 5 by from Ahab Pens Smooth writing right out of the box. Will take it apart just for the fun of it. My third order went in yesterday. My wish list never seems to get smaller even though I keep ordering from it. Alex, Katy and Greg did a superior job for me as I know they do for every one. Goulet Pen Company is a triple AAA quality organization that feels like a small local store even though they are hundreds of miles away. Quality people and quality products are what make Goulet Pen Company a major source for fountain pens and related items as well as a center for information.
Date published: 2014-10-20
Rated 5 out of 5 by from This is my new everyday pen This is now my go-to pen for everyday writing. Can't talk it up enough. But keep in mind, this is kind of a DIY pen; you're supposed to fidget with it some, to make it fit your preferences. I took it apart and gave it a thorough cleaning when it arrived, and I also smoothed out the channel somewhat with a needle before inking it up. Works perfectly fine. The flex is there if you want it but it functions great as a fine nib equivalent for jotting down notes, etc. Upkeep and maintenance is a breeze because you can get to EVERYthing. Great pen!
Date published: 2014-10-20
Rated 5 out of 5 by from One of the best flex pens I've had. I also have a Pelican with a flex point nib I was given as a replacement for a non-functioning nib. It is a good nib too but not quite as flexible. I did the recommended initial cleaning and had to remove a tiny piece of carving (probably from the hand-craving of the feed) that was stuck in a grove of the feed. After that the pen worked fine and still does. I have two of these (I like an extra alone so that I don't run out of ink or have to fill one in the field. I haven't tried the eyedropper mode yet, but I have with a Preppy, and it works well in that pen--lots of ink. But it is close to perfect, and a great buy at that its price for sure. When I havbe carried or stored it in a cap up position for a while, I usually have to tap the point lightly on paper to get the ink flowing enough for wide lines. Recommended for those who like a flex pen. And the service at Goulet Pen is excellent and reliable
Date published: 2014-10-20
Rated 4 out of 5 by from Great Pen, Great Price I bought this pen a month ago and immediately cleaned it and swapped out the flex nib with a non-flex nib (I'm intimidated!) I filled it with Noodler's Black and it writes very nicely. I have used it on checks, notebook paper (standard Mead), a journal with slightly slick pages, Leuchtturm1917 paper, and on postcards all to great success. I have noticed that if I leave the cap off for about five minutes that it starts a bit scratchy (not sure if that means I need to adjust the nib and feed or what), and that the way that I hold the pen sometimes puts the end of my finger in contact with the feed getting a small amount of ink on my finger. And yes, the "Noodler pen smell" is a real thing but it does dissipate fairly quickly. Overall, I would recommend this pen!
Date published: 2015-09-04
Rated 3 out of 5 by from Mixed Feelings This pen was my first foray into a flex nib and while I love the character and dimension it gives my writing, the ink feed is sporadic at best. Be aware also that you will have to fiddle around with this pen until it works the way you want it to - widening the capillary channels, etc. This has helped somewhat in keeping a constant flow of ink to the end of the nib. The piston fill is excellent and allows for much more ink per filling compared to a converter or cartridge.
Date published: 2014-10-20
Rated 3 out of 5 by from Boring color Sorry, but this color looked way better online than in person. It's really kind of a boring color of green with the black swirls hardly noticeable unless you hold it under a bright light. Now I wish I'd gotten the Christmas colored one instead. The nibs on the Ahabs seem to be inconsistent. This one is scratchy. I have 2 other Ahabs - one scratchy, one smooth, but the other scratchy one did improve with some use. I have since discovered the joys of pairing a Goulet nib with the Ahab, so that's what I'll do with this one. In general, I do like the Ahabs, despite their drawbacks. I have found them to require more care and tweaking than other pens - they are great for people who like to tinker with their pens. I like the fat girth, the juicy flow, the giant ink capacity, so I will likely buy more. Just this particular one's color is not turning me on.
Date published: 2014-10-20
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