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Twsbi Vac 700 Flow Problem

tonybelding

By tonybelding
in TWSBI

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tonybelding Antique

tonybelding

Posted
Posted

I am still running into a problem with the ink flow in both of my TWSBI Vac 700s. Sometimes the feed and nib run dry even though there's still plenty of ink and the filler knob is not screwed down. It just isn't flowing from the barrel down to the feed. Then, as soon as I figure out what's happening, I have to jiggle the filler knob a bit to get things flowing again. It happened with the older pen, and it happened with the newer (clear) one too. It happened even when I removed the rubber shutoff seal from the end of the plunger. It seems to happen less often with wet inks, but it still does sometimes.

 

It's a nuisance, especially considering the pen has been so excellent in so many other ways.

 

Has anybody else noticed this phenomenon, and have you figured out any way around it?

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Skyppere Vintage

Skyppere

Posted
Posted

Me. I don't know why. Sometimes it's a dream, other times this happens. I haven't figured out what I'm doing differently. I've had the same ink in it.

I'll pay attention to this thread for further developments

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akustyk Vintage

akustyk

Posted
Posted

Me. I don't know why. Sometimes it's a dream, other times this happens. I haven't figured out what I'm doing differently. I've had the same ink in it.

I'll pay attention to this thread for further developments

I've seen a similar thing in a couple of other pens with plastic feeds. The solution was to replace the feed. I wonder if your pen might have a similar problem. Can you send it to TWSBI for feed replacement?

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ShallowJam Rare

ShallowJam

Posted
Posted

I've noticed this too and it seems to be the ink. My darker inks tend to be more viscous and it seems that the surface tension of the ink prevents it from travelling down into the feed. I don't think its an issue with the feed, its with the ink getting there.

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Pelikan Vera Rare

Pelikan Vera

Posted
Posted

Hello all,

I took the shut off valve seal o-ring out. Et voila the ink gets to the feed and the pen does not run dry any more and one does not need to keep the knob unscrewed either....Vera

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  • 1 year later...
WC Lee Mint

WC Lee

Posted
Posted (edited)

I had the same problem too until I started to create more separation between the shut off valve and grip section after unscrewing the filler knob. It seems that simply unscrewing the filler knob isn't creating enough space for the ink to get pass the shut off valve into the feed.

Edited by WC Lee
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  • 2 weeks later...
intentionalist NOS (New Old Stock)

intentionalist

Posted
Posted

I'm getting this same problem, but with the 580. Is there a similar procedure I can perform to increase the ink flow?

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serpent Mint

serpent

Posted
Posted

on the 580 i find if i'm using a dry ink once ink level drops to about 20% i start having intermittent flow problems when this happens i just hold pen upright and turn piston till ink bubbles at base of feed and leave piston where it is. I'm not sure if flow is corrected by piston position or from the air gap left between barrel and knob. once i refill pen goes back to writing normally.

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intentionalist NOS (New Old Stock)

intentionalist

Posted
Posted

Thanks! I'll try this method. I'm also searching for a "wetter" ink but one that is still really black--it appears that my 580 does not pair well with Noodler's Bulletproof Black. Any rec's that are good with the 580?

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WaskiSquirrel Collectors Item

WaskiSquirrel

Posted
Posted (edited)

I have this problem with my TWSBI. At first I blamed the ink, but I found that the inks that worked in my Pilot Custom 823, which has the same filling mechanism, still had flow issues in the TWSBI.

 

There was actually an easy fix. I would unscrew the blind cap and then pull it out just a tiny amount. Don't pull too far or you get a mess when you screw it back down. But, I could pull it a tiny amount and seemed to feel a natural stop. My guess is that unscrewing the Pilot pulls the valve out further than it does in the TWSBI.

Edited by Waski_the_Squirrel

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