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Drastic Repair On An L.e. Omas " Return To The Motherland"

fountainbel

By fountainbel
in Italy - Europe

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fountainbel Antique

fountainbel

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Hi all !
Just finished the repair of an LE Omas "Return to the Motherland"

The pen arrived without the filling knob ( knob was completely shattered ), the piston lead screw was sheared off, piston housing end broke off, and the inner piston guiding key inside the barrel was sheared off.

According the owner Omas themselves had no spare parts and were unable to help .
After making sketches and analyzing the possible repair approaches, I decided to use the sturdy lead screw and the anti rotation part of a Pelikan 100N.
See the attached "before" and "after repair pictures with a drawing showing how I've repaired the pen.
The barrel being rather long, I needed to make a lead screw extension.
First I drilled the inner collar out of the barrel sand reamed the initial 8.8 mm barrel bore to 9.0mm.
Doing so I could also use a standard Pelikan piston seal.
These are very proven dependable parts, protected for overload with a slip coupling in the filling knob ( which i integrated in the design).
When the piston should get blocked- due to crusted ink , hence bad maintenance - the filling knob will slip and screw off instead of damaging the mechanism.
Logically one should stop screwing further when unscrewing the filling knob as soon one feels resistance in the movement (just as on a vintage Pelikan)
Note the HR filling knob is longer as the original one , but this the best I could in the given circumstances.
The red color of the filling knob is also not as bright as the section, but this was the best matching color I had in stock, and the owner had no problem with that
Hard rubber will also not shatter when f.e falling on the floor, which- given the weight of the "beast "- is a serious benefit.
The piston housing is made from high tech Peek material for the same reason, and screws in the existing barrel threads, locked with a counter nut
The anti rotation part of a Pelikan 100N housing was glued over a collar on the new Peek piston housing.
Note the complete piston unit comes out from the back now, but i expect one will not need to disassemble it for many years.
The piston stroke being 29mm, a royal ink intake of 1.8ml is the result.
As a friend suggested on a French forum,, we better name this pen "Return to the Motherland, back from the dead"
The owner is happy ,so am I !
Francis
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kenshiro Rare

kenshiro

Posted
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Now here's a question to which I would love to know the answer:

 

If you had to use a fountain pen for that drafting sketch, which pen and nib would you use? Saibi-togi? Platinum UEF/Nakaya EEF? Custom-ground needle?

On the Hunt For:

1) Atelier Simoni ID Demonstrator Natural Rhodium (As if it existed.)

2) Moresi 2nd Limited Edition Delta Demonstrator

3) y.y. Pen Club #4 and #10

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fountainbel Antique

fountainbel

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Now here's a question to which I would love to know the answer:

 

If you had to use a fountain pen for that drafting sketch, which pen and nib would you use? Saibi-togi? Platinum UEF/Nakaya EEF? Custom-ground needle?

 

I would surely use one of my own designed and made Bulk fillers with a home ground titanium EF nib ..

What else would you expect from me?

Francis

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RMN Museum Piece

RMN

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Francis, I know you for some time now, yet you keep amazing me..... :thumbup:

 

D.ick

~

KEEP SAFE, WEAR A MASK, KEEP A DISTANCE.

Freedom exists by virtue of self limitation.

~

 

 

 

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fountainbel Antique

fountainbel

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Thank you all for your nice reactions !

In fact ,I really really love these more challenging complex repairs, they keep my "grey cells" active !

Francis

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Opooh Collectors Item

Opooh

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I would surely use one of my own designed and made Bulk fillers with a home ground titanium EF nib ..

What else would you expect from me?

Francis

Great job, Francis!

Can't wait to see the Oversize Bulkfillers tomorrow in Köln.

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fountainbel Antique

fountainbel

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Great job, Francis!

Can't wait to see the Oversize Bulkfillers tomorrow in Köln.

Thanks Opooh, and sorry we couldn't meet in Kôln !

Francis

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  • 3 months later...
georges zaslavsky Museum Piece

georges zaslavsky

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well done francis :thumbup:

Pens are like watches , once you start a collection, you can hardly go back. And pens like all fine luxury items do improve with time

 

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Dillo Donor Pen

Dillo

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Hi,

 

I can't believe I didn't say anything about this earlier! It's quite a wonderful repair, and it seems quite creative.

 

Dillon

Stolen: Aurora Optima Demonstrator Red ends Medium nib. Serial number 1216 and Aurora 98 Cartridge/Converter Black bark finish (Archivi Storici) with gold cap. Reward if found. Please contact me if you have seen these pens.

Please send vial orders and other messages to fpninkvials funny-round-mark-thing gmail strange-mark-thing com. My shop is open once again if you need help with your pen.

Will someone with the name of "Jay" who emailed me through the email system provide me an email address? There was no email address provided, so I can't write back.

Dillon

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raging.dragon Antique

raging.dragon

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It's an impressive repair, and the Pelikan piston Francis retrofitted is probably better than the original OMAS piston.

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