Dye DFF-20 Lazarus Valve
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Ah, I get it now. This is backwards from that design I had that drove me nuts; it's a neat feature to trigger it closing (although I'm curious just how much impact it has). This is rapidly moving up my list... -
If you decide to sell the aluminum hammers, any chance of a slotted version for mid blocks? -
Great info! I’m less than patiently waiting for mine to arrive. I have two pumps ready to go to for testing. It’s helpful to have an idea for the spring and hammer weights so I can skip the tedious part and start shooting.Leave a comment:
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Here’s a little write up for the new Dye valve:
I’m excited for this new valve, just using something that’s new and intuitive is fun to build on its own. I haven’t really been a fan of 11/16 because it wasn’t very beneficial for main pump players like myself. CCM and ACParts lowers always had the smoothest pump stroke for 9/16 valve lowers.
I think this will benefit pump players a little more because operating at a lower or higher pressure for a mech and having the IVG 2-3 turns in or flush doesn’t really make a difference when your just pulling a trigger other than just bragging rights. It might be better for efficiency but nobody is trying to carry 12 pods while shooting a cocker, so I don’t think that really matters unless you need that.
Now for pump this can make a difference because the flow that the valve is allowing through, you are able to have the IVG flush with a very light spring (compared to a heavier one) which allows for a smoother lighter pump stroke and the lower reg pressure definitely gives it a different softer sound signature.
I’ve been testing this for the past few days and have been playing with a lot of different spring/hammer combinations. When I set up my 9/16 standard pumps I’m generally at 3-350 PSI and 2-1/2 turns in on the IVG for 285 FPS. When I first installed this valve in my 11/16 blank body I put a CCM hammer and spring in and set the reg to 190 PSI with the IVG flush. Dry firing one shot made a massive farting sound so I knew the hammer was bouncing, I tried a heavier spring and it was better but still a little farty. I put in a stock WGP hammer that was lighter and tried both a heavier and lighter spring and it was better than the CCM but it was still a bit farty and FPS was still low at those settings.
So I decided to make an aluminum hammer so that it’s lighter than the stainless, threw it in with the lighter spring and the sound signature was a perfect pop, no farting and back up to velocity with IVG flush and reg pressure at 190 PSI. I’m really liking this hammer so far as well so I’m going to get it hard anodized and then continue testing on an anodized body to prevent wear on either surfaces and see if it’s something to bring to market after more testing. Since it’s mostly the weight that’s beneficial I may make a titanium one.
All in all I think it’s a cool new valve for sure, it’s still new but I think you should definitely get one to tinker with and find the perfect combination of what you’re looking for, it’s what makes building fun. Again, for mechs I think the difference between this and a stock valve is a different sound signature because of lower reg pressure and better efficiency if that matters to you. For pumps it’s beneficial to be able to have a lighter pump stroke since you can have a lighter main spring and the IVG flush and the different sound signature as well.
I’ve been seeing people having issues getting these to work with some other WGP bodies I think some the diameter is too small in that area or the predrill depth is too shallow for the blue tip. If you want a new body check out mozakmachine.com and the front page has the “Build Your Own Body” feature.Leave a comment:
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Pressure compensating valves have been in text books more than 200years. This is why the breach sensing marketing is so dumb. Navy ships since mid-century use this for many systems, anchors, steering, etc. -
And balanced poppet valves are not exclusive to the paintball world either. -
You believe "breech-sensing" is marketing? It's not and it's over a decade old at this point....absolutely nothing new.
Breech-sensing: There is a hole on the exhaust side of the pin and inside the bore where the spring sits, with a communication passage between the holes. The U-Cup seal seals off the "spring chamber" side of the pin. When the valve opens to fire, some of the air rushing to the bolt/ball travels into the hole, through the passage and into the spring chamber (the closing surface area of the valve) to provide a closing bias. This is the exact same concept seen on any modern breech-sensing spool valve - IV Core, Gamma, ARC, etc. This is why there is an orifice at the tip of the valve with a passage extending the length to the small chamber behind the valve - to provide extra closing bias.
CS1 example: http://www.zdspb.com/media/tech/animations/cs1b.gif
Gamma example: http://www.zdspb.com/media/tech/animations/gtek.gif
In the Gamma's case, the air saved by the advanced valve closure is responsible for resetting the bolt to its home position.
The breech-sensing concept was introduced by Lurker with the Control Freak poppet and in a production marker with the PE IV Core.
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