doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Odd repair on this Ithaca Flues

The Smokeless powder era certainly pre-dated the Flues model. I have not owned a lot of them but as I recall all that I did own had the bbls marked "Smokeless Powder Steel". It was not smokeless powder or for that matter even chamber pressure which did in the Flues design. It was rather the introduction of newer slower burning "Progressive" smokeless powders in the 1920's which allowed heavier shot charges to be fired at full (or even higher) velocities, previously only obtainable with lighter shot loads. The design of the Flues frame was borderline for this increased thrust & some began to fail, bringing on the re-design to the NID.

Whatever they are, they're spring-loaded but there's no good cutaway diagram in Walt's book.

jack

No cut-a-way but they are as Kutter stated, part of the ejector mechanism. It been a long time since I have had one apart but as I recall, the buttons(rivets) intersect the rods that can be seen at the knuckle. It is part of the design that indicated which barrel has been fired. I only have one Flues ejector left in my collection, a grade 6, and it is too special to disassemble to refresh my memory.

Ok, I've found my 20 field ejector Flues. It's a 'soon/sometime to be a fine gun again' project/parts gun and I thought it would do for a few pics and explanation. No need to take any Grade 6's apart when this beauty is about.
You're looking at the bottom of the action, barrels removed, trigger plate removed, muzzle right. Right barrel on the top of the pictures. The trip rods for the ejectors can be seen in front of the cutouts with their triangular shapes just in front of the integral cocking arm of each hammer. You cannot see the spring loaded buttons or stops in question from the bottom as they are up inside the action about midway on the rods. Their removal requires the hammers/mainsprings to come out first.
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#1...Both hammers cocked, with their cocking arms in the up position in the receiver (down in the pic 'cause the receiver is upside down). Both ejector trip rods in the rear position. The gun, if opened in this condition, would not trip the ejectors.
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#2...Right barrel (top of pic) is fired. Cocking arm of hammer lowers as hammer falls and pushes the ejector trip rod forward by way of the triangular shaped cam surface. At this point the ejector trip rod is locked into the forward position by that small spring loaded button in question and is protruding from the front of the receiver knuckle approx 1/8".
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#3...Receiver flat showing the right 'button' in the up position locking the ejector trip rod forward. It actually won't do this until the barrels start to open and the spring pushes the button upwards but it takes very little opening movement to do. Locking the ejector trip rod foreward insures that the ejector for that barrel, the one thats been fired, will be activated. The unfired one will not be and will only extract it's shell.
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#4...Right barrel recocked..as in the full motion of opening the gun and swinging the barrel down. (I did it with a screw driver for the pics of course). The ejector rod still locked forward by the 'button' to ensure the ejector on that side is activated and kicks the shell out.
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#5...Simulates the action once again closed and the button on the action flats depressed by the barrel closing down on it. The ejector trip rod is released from it's locked forward position and is pushed back to the rear by a radius cut in the forend iron. Same condition as Pic#1. Ready to go again. Hope this helps..

Very well done! Thank you. Excellent photos and explanation. You should write a book. I will save this tutorial.