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  1. #11
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    Quote Originally Posted by Sunray View Post
    Springs do not lose temper from being compressed
    Another False statement

    Simple Metallurgy

    Tempering: is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool.

    Springs: Under tension for an extended period of time can become weaker. Springs are specifically designed to contract under load in order to absorb energy from outside stress, then return to their natural state when the load is released.

    Spring Fatigue: Over a long enough period of time, fatigue can occur, which is a condition where enough stress has repeatedly acted on the object and some deformation becomes permanent. In this case, it is harder to regain its complete normal shape. This is essentially what happens when a spring wears out. Any corrosion on the spring will advance this condition.

    Quote Originally Posted by Sunray View Post
    I've never had any issue with my Plainfield a bath didn't fix. Never had to replace any spring.
    While your Plainfield sits in your closet for another 4 or 5 years, with the action closed. You only have 2 Springs under partial load - The Op Slide Stop pin 'Friction Spring' and the Trigger spring.

    Obviously you've never turned the crank on a old motor to relieve / alternate the pressure on valve springs. Ever measure a old valve spring next to a new one ?
    Ever sleep on a steel spring coil mattress ? If not go try it, the local dump is full of them. Why would those springs go bad ? The answer is from extended compression leading to fatigue.

    Temper, The way a smith or manufacturer would temper steel or other metal, was to improve the hardness and elasticity by reheating and then cooling it. When it ages you have metal fatigue and loss of some elasticity, known as 'Creep' / 'Memory' to those who know. Any bending, distorting or kinking of the spring will hinder elasticity also.

    In TM9-1276_1947 ,
    Every spring
    has it's ID, OD, Free Length, Number of Coils, Mean Assembled Height, Load at Assembled Height, Operating Height, and Load at Operating Height: Measurements, Lengths etc. Listed.
    Page 35, Section 25 Under 'Inspection and Replacement of Springs' Covers Inspection and Replacing the Springs.
    The Overhaul Chart describes Inspection and Upgrading Springs.
    These are recommended Repair, Replace, Inspection and Rebuild guidelines for 5-6 year old Carbines.

    TM9-1276_1947: http://www.90thidpg.us/Reference/Man...-1276_1947.pdf

    Best to store your action with the Hammer, Bolt / Op Slide forward. So the Compression load is off most all the springs.
    I wouldn't recommend leaving fully packed magazines for long extended time periods. Best to rotate the magazines you leave some loads in.

    I posted this so you wouldn't be confused by the other reply.

    FWIW
    Charlie-Painter777

    A Country Has No Greater Responsibility Than To Care For Those Who Served...

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    Quote Originally Posted by Sunray View Post
    “If it ain’t broke don’t fix it” is Rule Number One.
    Wolff's biggest advantage is that they don't treat Canadianicon like lepers. Order something and they send it. Mind you, I've never had any issue with my Plainfield a bath didn't fix. Never had to replace any spring.
    A great deal will depend on which spring you think needs replacing. Springs do not lose temper from being compressed.
    Lol Sunray, thank you.

    Eddie

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    Quote Originally Posted by EddieM View Post
    I have 2 M1icon Inlands, both have different recoil spring length, the difference is about 2 inch, I don't know which is the right length,
    Eddie,
    Your Op Slide Spring should measure 10-1/4" laying flat on the table.
    Do Not try to stretch a Short Spring to make it longer..... Comprende ?

    EDIT: Ask this seller if he ships to you if you want USGI New Springs


    2nd Edit: Best to stay away from this seller. SEE replies below.
    Last edited by painter777; 03-26-2021 at 02:28 PM. Reason: Delete Link
    Charlie-Painter777

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    Thread Starter
    Quote Originally Posted by painter777 View Post
    Eddie,
    Your Op Slide Spring should measure 10-1/4" laying flat on the table.
    Do Not try to stretch a Short Spring to make it longer..... Comprende ?

    EDIT: Ask this seller if he ships to you if you want USGI New Springs

    M1 Carbine spring operating slide USGI NOS | eBay
    Hola Carlito,

    Thank you, I'm waiting for answer from the seller.
    Tomorrow I will check the length of my spring to let you know.

    Eddie

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    Quote Originally Posted by painter777 View Post
    Eddie,
    Your Op Slide Spring should measure 10-1/4" laying flat on the table.
    Do Not try to stretch a Short Spring to make it longer..... Comprende ?

    EDIT: Ask this seller if he ships to you if you want USGI New Springs

    M1icon Carbine spring operating slide USGI NOS | eBay
    Charlie, I refuse to buy from that seller. Take a look at their other items. I bought an op slide spring from them 2 years ago shown as being from an identical package. The spring I received wasn't USGI. Does "Wobsfund" ring a bell? - Bob

    Attachment 116088

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    Quote Originally Posted by USGI View Post
    Charlie, I refuse to buy from that seller.
    +1, he is on my no buy list!

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    I didn't notice or read the description below the listing, Or I would have see it was 'Wobsfund'

    I just did a quick search after I posted the Spring length. Then the Quick Edit, adding the link.

    Hard to keep up with multiple seller names used by the same guy when you get in a hurry.

    My mistake, I'll take the A$$ kicking.
    Charlie-Painter777

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    I checked WAC this morning and they're now "sold out" on op slide springs. - should have added a couple on my last order. - Bob

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    Quote Originally Posted by painter777 View Post
    I didn't notice or read the description below the listing, Or I would have see it was 'Wobsfund'

    I just did a quick search after I posted the Spring length. Then the Quick Edit, adding the link.

    Hard to keep up with multiple seller names used by the same guy when you get in a hurry.

    My mistake, I'll take the A$$ kicking.
    That wobsfund guy is where my M8 launcher came from years ago. He was going under another name when I bought it from him that I can't recall at the moment. It came wrapped in New Old stock cloth identical to my M7 that I bought from a completely different seller and a couple years apart. I guess I'm going to have to unwrap the thing entirely to check it out closely since this seller is on the no buy list of everyone
    "good night Chesty, Wherever You Are"

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    Thread Starter
    Quote Originally Posted by painter777 View Post
    Another False statement

    Simple Metallurgy

    Tempering: is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool.

    Springs: Under tension for an extended period of time can become weaker. Springs are specifically designed to contract under load in order to absorb energy from outside stress, then return to their natural state when the load is released.

    Spring Fatigue: Over a long enough period of time, fatigue can occur, which is a condition where enough stress has repeatedly acted on the object and some deformation becomes permanent. In this case, it is harder to regain its complete normal shape. This is essentially what happens when a spring wears out. Any corrosion on the spring will advance this condition.



    While your Plainfield sits in your closet for another 4 or 5 years, with the action closed. You only have 2 Springs under partial load - The Op Slide Stop pin 'Friction Spring' and the Trigger spring.

    Obviously you've never turned the crank on a old motor to relieve / alternate the pressure on valve springs. Ever measure a old valve spring next to a new one ?
    Ever sleep on a steel spring coil mattress ? If not go try it, the local dump is full of them. Why would those springs go bad ? The answer is from extended compression leading to fatigue.

    Temper, The way a smith or manufacturer would temper steel or other metal, was to improve the hardness and elasticity by reheating and then cooling it. When it ages you have metal fatigue and loss of some elasticity, known as 'Creep' / 'Memory' to those who know. Any bending, distorting or kinking of the spring will hinder elasticity also.

    In TM9-1276_1947 ,
    Every spring
    has it's ID, OD, Free Length, Number of Coils, Mean Assembled Height, Load at Assembled Height, Operating Height, and Load at Operating Height: Measurements, Lengths etc. Listed.
    Page 35, Section 25 Under 'Inspection and Replacement of Springs' Covers Inspection and Replacing the Springs.
    The Overhaul Chart describes Inspection and Upgrading Springs.
    These are recommended Repair, Replace, Inspection and Rebuild guidelines for 5-6 year old Carbines.

    TM9-1276_1947: http://www.90thidpg.us/Reference/Man...-1276_1947.pdf

    Best to store your action with the Hammer, Bolt / Op Slide forward. So the Compression load is off most all the springs.
    I wouldn't recommend leaving fully packed magazines for long extended time periods. Best to rotate the magazines you leave some loads in.

    I posted this so you wouldn't be confused by the other reply.

    FWIW
    Hola Carlito,

    I really appreciate your support, thank you for this awesome and complete feedback.

    Cheers compadre

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