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Turn Your FX-120i into a Prometheus

Just took this video to answer some questions from a customer. I'm not sure this has been done in a video before. Varget kernels weigh 1.46 milligrams. That's why it is jumping two divisions.

 
Varget kernels weigh 1.46 milligrams. That's why it is jumping two divisions.

1.46 milligrams = 0.02253124 grains

Yep, and why after reading this thread I switched from grains to grams on my scale. May not make my loads any more accurate but I'm convinced they're more consistent.

When I changed I was using a DI MMX-123. Adding Adam's trickler & FX120i sped things up considerably once I'd noted my target weights on a list I stuck up on the wall above my scale.
 
1.46 milligrams = 0.02253124 grains

Yep, and why after reading this thread I switched from grains to grams on my scale. May not make my loads any more accurate but I'm convinced they're more consistent.

When I changed I was using a DI MMX-123. Adding Adam's trickler & FX120i sped things up considerably once I'd noted my target weights on a list I stuck up on the wall above my scale.
i have never thought about doing that.. but i will this week when i test new loads.. supplies arrive tomorrow afternoon..
 
Any update on the fullly automated trickler design involving the powder drop?

Still in the works, just back burner at the moment. Lots of things going wrong the last two months... busy at work, leaky well tank diaphragms, someone tried to break into the shop (twice!) so lots of security upgrades, busted driver's door latch on Dad's car and of course the parts were discontinued, water pump took a dump on Mom's car, and on and on. Usual "life getting in the way of fun" stuff.

Have done some reprogramming on my own unit now that I have some use on it to know what's needed and what isn't to get it performing the fastest and most consistent. The lessons learned will get transferred over to the "retail" version.

Work wants me to take 120 hours off between now and 12/31. I'm sure they'll cancel some of them, but I'll try and make the time to work on the throw. :)

Cambridge Environmental posted on one of the other gun forums, they're now offering the A&D HR-100A which is 0.0001g capable, an order of magnitude better than the FX-120i and on par with the Entris. Based on what I can tell from the user's manual it supports the same data output format as the FX series and also has the open bay in the rear, so it should also work with Adam's trickler... just an educated guess though since I don't have one to test.
 
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Still in the works, just back burner at the moment. Lots of things going wrong the last two months... busy at work, leaky well tank diaphragms, someone tried to break into the shop (twice!) so lots of security upgrades, busted driver's door latch on Dad's car and of course the parts were discontinued, water pump took a dump on Mom's car, and on and on. Usual "life getting in the way of fun" stuff.

Have done some reprogramming on my own unit now that I have some use on it to know what's needed and what isn't to get it performing the fastest and most consistent. The lessons learned will get transferred over to the "retail" version.

Work wants me to take 120 hours off between now and 12/31. I'm sure they'll cancel some of them, but I'll try and make the time to work on the throw. :)

Cambridge Environmental posted on one of the other gun forums, they're now offering the A&D HR-100A which is 0.0001g capable, an order of magnitude better than the FX-120i and on par with the Entris. Based on what I can tell from the user's manual it supports the same data output format as the FX series and also has the open bay in the rear, so it should also work with Adam's trickler... just an educated guess though since I don't have one to test.

The HR-100a works with the trickler but it only refreshes 10hz rather than 20hz so its not quite as a responsive. Compared to the FX for practical purposes they are pretty much identical. The response rate and the increased resolution won't really make a noticeable effect to trickler performance so I wouldn't pay $1 more for the HR model.
 
The HR-100a works with the trickler but it only refreshes 10hz rather than 20hz so its not quite as a responsive. Compared to the FX for practical purposes they are pretty much identical. The response rate and the increased resolution won't really make a noticeable effect to trickler performance so I wouldn't pay $1 more for the HR model.

Good info to have about the HR. Only skimmed the manual to get an idea of serial output format to see if it would work with your trickler, didn't notice that it only updates at 10hz even in fast response mode. That certainly could have a negative effect when tricking the final couple of kernels.

I agree with you that the best price vs performance seems to be with the FX-120i. The 0.1mg resolution of the HR-100A or Entris 64 is nice to have just so the scale resolution is an order of magnitude greater than the weight of a typical kernel and it also usually means better linearity in the scale. However, I seriously doubt I could shoot the difference between charges weighed on the FX-120i compared to the HR-100A / Entris 65 as the linearity difference between them translates into +/- 1 kernel of possible additional error for the FX-120i.
 
Do you anticipate selling plans for the unit, or the actual assembled unit?



Still in the works, just back burner at the moment. Lots of things going wrong the last two months... busy at work, leaky well tank diaphragms, someone tried to break into the shop (twice!) so lots of security upgrades, busted driver's door latch on Dad's car and of course the parts were discontinued, water pump took a dump on Mom's car, and on and on. Usual "life getting in the way of fun" stuff.

Have done some reprogramming on my own unit now that I have some use on it to know what's needed and what isn't to get it performing the fastest and most consistent. The lessons learned will get transferred over to the "retail" version.

Work wants me to take 120 hours off between now and 12/31. I'm sure they'll cancel some of them, but I'll try and make the time to work on the throw. :)

Cambridge Environmental posted on one of the other gun forums, they're now offering the A&D HR-100A which is 0.0001g capable, an order of magnitude better than the FX-120i and on par with the Entris. Based on what I can tell from the user's manual it supports the same data output format as the FX series and also has the open bay in the rear, so it should also work with Adam's trickler... just an educated guess though since I don't have one to test.
 
Came up with another little incremental improvement / add-on everyone might be interested in.

Was reloading some 7 SAUM the other night and using H1000. H1000 has rather coarse kernels that frequently bunch up and the trickler likes to drop several of them at a time even when set to a very slow "finishing" speed making for frequent overcharges. I encounter the same kind of multiple-kernel bunching/dropping behavior with Varget and H4350 but not as bad as with H1000. With smaller kernel powders like AR-Comp, H4895, and N133, they usually run with only very rare overcharges.

While picking out a few H1000 kernels from yet another overcharge I had an idea that a small restrictor pin in the center of the trickler tube would help flatten the piled up kernels in the trickler tube and help the trickler dispense only single kernels at the very end of the ramp down.

For a quick and dirty experiment I stripped some copper wire, bent it into shape, and used zipties to attach it to the trickler. The wire pokes into the end of the trickler tube about 1/2-5/8". The wire is centered in the trickler tube, and my trickler tube runs very true so at no time does the tube "wobble" and contact the wire.

Results... absolutely no overcharges with H1000 for the rest of the session, I was able to increase the trickler finishing speed slightly without causing more overcharges, and the restrictor wire does not adversely affect the high speed feed rate of the trickler. It may slow the trickler dispensing rate down slightly in high speed but not having to deal with frequent overcharges saves more time overall.

Will be testing it with Varget and RL16 tonight but I expect results similar to H1000.

I don't have one of the V2 tricklers yet, but I'm guessing this mod would work for the V2 as well if you're encountering occasional multiple kernel dropping & overcharges.

Next up is making a more cosmetically "pretty" version of the restrictor wire compared to the current cobbled-together test piece… it's ugly, but it works! :p Will probably use copper or stainless wire for the “final” version and drill and tap the trickler body to attach it with a screw via a small loop bent around the screw.

trickler_wire.jpg
 
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Came up with another little incremental improvement / add-on everyone might be interested in.

Was reloading some 7 SAUM the other night and using H1000. H1000 has rather coarse kernels that frequently bunch up and the trickler likes to drop several of them at a time even when set to a very slow "finishing" speed making for frequent overcharges. I encounter the same kind of multiple-kernel clumping/dropping behavior with Varget and H4350 but not as bad as with H1000. With AR-Comp, H4895, and N133, those all have smaller kernels and usually run without overcharges.

While picking out a few H1000 kernels from yet another overcharge I had an idea that a small restrictor pin in the center of the trickler tube would help flatten the piled up kernels in the trickler tube and help the trickler dispense only single kernels at the very end of the ramp down.

For a quick and dirty experiment I stripped some copper wire, bent it into shape, and used zipties to attach it to the trickler. The wire pokes into the end of the trickler tube about 1/2-5/8". The wire is centered in the trickler tube, and my trickler tube runs very true so at no time does the tube "wobble" and contact the wire.

Results... absolutely no overcharges with H1000 for the rest of the session, I was able to increase the trickler finishing speed slightly without causing more overcharges, and the restrictor wire does not adversely affect the high speed feed rate of the trickler. It may slow the trickler down slightly in high speed but not having to deal with frequent overcharges saves more time overall.

Will be testing it with Varget and RL16 tonight but I expect results similar to H1000.

I don't have one of the V2 tricklers yet, but I'm guessing this mod would work for the V2 as well if you're encountering occasional multiple kernel dropping & overcharges.

Next up is making more cosmetically "pretty" version of the restrictor wire compared to the current cobbled-together test piece… it's ugly, but it works! :p Will probably use copper or stainless wire for the “final” version and drill and tap the trickler body to attach it with a screw via a small loop bent around the screw.

View attachment 997373

That is a pretty cool idea. Maybe it could be attached to the tube itself so its a small clip-on device.
 
That is a pretty cool idea. Maybe it could be attached to the tube itself so its a small clip-on device.

I thought about a slip on version too, would make it easier to remove in the event a stuck together clump of powder gets stuck in the tube.

For a quick 5 minute experiment the wire and zip ties are working great so far. Hoping it reduces the occasional multiple kernel drops with varget and RL16, I'll find out tonight.
 
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Kiba, are you sure that is not a still you are operating???:D

Great idea as I have the same issue on occasion with H4350 and H4831sc. I am going to give that a try.
 
I thought about a slip on version too, would make it easier to remove in the event a stuck together clump of powder gets stuck in the tube.

For a quick 5 minute experiment the wire and zip ties are working great so far. Hoping it reduces the occasional multiple kernel drops with varget and RL16, I'll find out tonight.
It would seem that the zip tie version does not rotate with the tube whereas the clip on version would rotate with the tube. I am guessing that a non-rotating version would be more "agitating"...??
 
These fixes for "clumping" are neat!
But, would it work with a small drop of epoxy about 1/2-3/4" up the tube covering the threads making a slight "speed bump?"
 

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