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Posted: 8/4/2007 9:15:59 PM EDT
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I recently picked up a Yugo SKS. After spending the time to clean out the cosmo, I took it to the range. Everything shot/ran fine with no issues. That said, I compared it to my friend's Norinco SKS that was bought new way back when. While his was throwing brass 30 feet away (after bouncing into the ceiling), mine was throwing them about 10 feet with less force. In addition, mine seemed to significantly vary the direction is was being thrown. While it's not a major issue, I'd like to see the full performance. Do you think it's lack of gas causing a slower bolt speed? Or a weak extractor spring? Suggestions? |
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Its always wise to just stare at the wall when standing in the men's restroom taking care of business. Once you start comparing it leads to nothing but endless insecurities, at least that's what I've heard. Your little Yugo works, doesn't it? It doesn't jam or foul the action with cases. It flings them out and functions perfectly, doesn't it? You said everything shot/ran fine with no issues, yet you're disappointed because it only dribbles brass while others are stronger and fling brass with vigorous virility. You feel diminished  .If I had to guess why your little Yugo was bringing you disappointment and embarrassment, I'd suggest the gas port size and the difference in the gas system between the 59/66 and the Chinese. I'm assuming you have the 59/66 because you didn't give us all the pertinent information and the 59/66 seems to be the more prevelant. What's different about the 59/66 from the Chinese? The gas valve for the grenade launcher. Is the gas port the same size orifice? These are the two areas that regulate how much gas gets directed to the gas cylinder to unlock the bolt. What else? The recoil spring maybe? Does the Yugo have the same rate spring as the Chinese? We can't really know that can we unless you and your friend each whip out your recoil springs and measure them with a tape and calipers (always do this in private). The gas system only unlocks the bolt. From there its recoil momentum that drives the bolt rearward to fully extract and eject. The recoil spring is the doodad that provides the power to return the bolt to battery but it also acts as a recoil buffer so it has an effect of slowing bolt speed, and as a result, ejection force. I wouldn't think the extractor spring would be responsible for what you're describing. The gas valve on the 59/66 is the single most problematic part of the gas system for that model. It gets rusted and frozen and fouled and removes a level of, well, confidence we expect from a gas gun. But there's something else still. The ejector. Spring loaded? Length? Function? This would also be an area to include in inspection as it could well alter the ejection pattern that you find inferior. Treat recoil energy as if it were something tangible, something you could see and hold in your hand and look at. How does it move and act upon the various elements of the weapon? Let it speak to you and don't forget to zip up when you're done. Dutch |
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Check the gas selector. Mine was pitted and would only cycle with WWB...Wolf didn't get it done. You could stand next to the rifle when it was fired and see the gas leaking at the selector. I bought a stainless selector off EGay for 20 bucks or so and it runs great. I still gave it away to my nephew as I no longer trust my life to it. If I can't trust it with my life....BuhBye. eta: look for gas fouling at the selector. Mine dirtied up the sling something fierce. |
 I agree with the dutchman; don't worry about it unless you have failures. |
Well, I don't agree. It's like saying, well, the car shakes a lot when I get it up to 60 mph, but since it still gets up there and doesn't stop working, I won't mess with it. While parts are available now, and I'm in the mood for tinkering, I'd like to check to see what the issue might be. Sure, it works now, with this particular batch of ammo, at these warm temperatures, properly lubed. I haven't yet figured out what happens when I use different ammo, when it's cold, dirty, and dry. But I appreciate the suggestions. |
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