Electric Gold Dredge: Impeller Testing Process.

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Electric Gold Dredge: Impeller Testing Process.

Рет қаралды 1,464

4 ай бұрын

I've been working away at setting up this scientific testing station so that I can get some more scientific results to work with when designing impellers.
I was able to capture results for the stock impeller that comes included with the seaflo 2000GPH bilge pump. I then tested a 3D printed impeller and found it performed objectively worse in almost every way, while actually consuming more power than the original one!
It was back to the drawing board where I made some design changes and came back with a design that was more powerful AND more efficient! Now I will be spending some time makeing one change at a time to track down what is an improvement and what makes things worse until I settle into a design that can be tested against the stock impeller in an actual dredge suction jet!
For now, I found that an 11mm nozzle size (~7/16") worked the best at producing the most work.
Until next time, thanks for watching!
My Patreon: / utmostoutdoors

Пікірлер: 57

@goldpanr 4 ай бұрын

Man, this is getting good now! Can't wait for more engineering revelations.

@bixik77 4 ай бұрын

Looks like fun. Try a impeller with odd numbers of vein blades. It has something to do with balance that makes odd number impeller blades more efficient.

@robertwoodhouse406 4 ай бұрын

I came across your video testing sluice mats and was impressed with your level of testing as I have done similar testing in the past then I saw these electric gold dredge videos and have enjoyed them thoroughly because I'm the Goldsnare electric dredge guy and made 2" dredges several years ago, but no longer. I have been at the same point many times. My experience with bilge pumps is you will need twice the volume for even minimal operation as compared to a gas pump so double the area of the jet orifice (1/2" for a 2" dredge means 23/32) That 2000gph pump will run a 1 1/2" dredge but a 3500-4000gph will be needed for a 2" dredge unless you can improve PSI by a combination of impeller and I expect printing an expanding volute. I think you already have a very good handle on this seeing a couple of your other videos and nothing beats testing for yourself. I do use some orifice flow calculators in excel to help determine size and amount of orifices to help determine flows and pump requirements and am happy to send if you like. My experience with two pump designs whether in parallel or series is an improvement of about 20% but your current draw is doubled so less efficient overall. Enjoying watching your journey, if I can be any help let me know. Rob Woodhouse timberdoodle28@aol.com

@UtmostOutdoors 4 ай бұрын

Hey, pleasure to hear from you! I've recently stumbled across a few of your videos while trying to learn what I can about electric dredges, I appreciate the help! Hopefully I can make at least SOME headway on the efficiency front with these tests, although I do think I'll need to size up my pump at some point... I'll reach out by eMail!

@FalhaNaMatrix-BR 4 ай бұрын

I'm looking forward to the next videos🔥

@brianthayer9784 4 ай бұрын

Have fun with your testing friend and I made a electric dredge we found that we had to run 2 pumps to make it work right we made our impellers to get the right preasure to run a 1 inch nozzle on dredge.

@UtmostOutdoors 4 ай бұрын

What size of dredge suction were you able to achieve with that setup using the 1 inch nozzle?

@aamantium1 4 ай бұрын

Did you run the pumps "on-line" or did they intersect the dredge nozzle at two different positions?

@brianthayer9784 4 ай бұрын

@@aamantium1 with a y connection 3 into one then yo nozzle worked good

@brianthayer9784 4 ай бұрын

2 into one story fat fingers

@jonmorgan1913 4 ай бұрын

Hey! It's Jon from Lee Hendrix Gold. I'm in the US where dredging is legal. I would sure to test some of your dredge pumps. I bought a 4700 gph bilge pump a few years back and the only thing to spin it somewhat fast enough is a car battery, which I don't carry in the woods. My highbanker is electric but could be better.

@Gold-Prospecting-Bulgaria 4 ай бұрын

Interesting ideas. I also made some research about the same concepts to create backpack electric dredge. But so far I did only calculations and simulations with software. Seems very hard to make significant improvement over the stock impeller. Eventually you run into the limitations of the centrifugal design. To make functional gold dredge you need both pressure and volume. You need a lot of water at high velocity to push the water column in the hose in order to create suction at the end of the hose. Look into RC JET PUMP! Just an idea from me 😉

@jonmorgan1913 4 ай бұрын

A compny made an electric dredge that was subsurface. The nozzle, if i recall, was made to the enclosed subsurface sluice box. It used 2 low amperage bilge pumps that were something like 3700 or 4700 gph and the pumps attached right to the nozzle, one on each side. I think they were out of California.

@paraglidingprospector 4 ай бұрын

You’re chasin’ the next generation of mobile prospecting and I’m just waiting here like “Yeah! Do it! Do it! Do it!” 😂 Are you gonna add a dredge nozzle and connect this to your high-banker?! 🙌🏼 Great build!

@UtmostOutdoors 4 ай бұрын

I'm honestly not sure at this point where this project will go. I just want to learn some things about how a subsurface fine gold dredge might work and if it can be electric, how to make it the most efficient. Maybe a packable suitcase style dredge in the works.,,

@paraglidingprospector 4 ай бұрын

@@UtmostOutdoors Yeah! A suitcase design would be super cool! 🤙🏼 My own attempts to build an electric dredge nozzle and a dredge bucket were both unsuccessful. I never posted any videos from those projects, but they were fun nonetheless. I really appreciate the time and effort you’ve put into this build! #Science 🙌🏼

@jamesculver829 4 ай бұрын

Oh, if I had the time to do testing like this. If you have an impeller design that works better than stock, say at 14mm, I sure would love would love to try out that file!

@randydixon9512 4 ай бұрын

I've been on vacation and have missed your podcasts. You've been busy. I'm sure you looked into nozzle design but I was thinking that the final nozzle should be shaped with a flared exit, like a rocket nozzle. I'm guessing from what I've seen from you that you've already thought about this as well as the angle, length-diameter ratio and things I haven't thought about though.

@UtmostOutdoors 4 ай бұрын

I'm a long way from answering those questions with physical experiments just yet, but I suspect the use of a 3D printer will allow for some very interesting geometry. Like slightly expanding the suction tube directly after the jet for improved suction efficiency.

@mrkus-nc7od 4 ай бұрын

I am watching 😬 ! 😊 Drege 12 volt , got my attention 😳

@mohammednovalija 4 ай бұрын

I have no idea what I just watched then. But it is a bit of an epiphany to realize I am not as smart as I thought I was. Actually I always knew I was not as smart as I thought I was , but I refused to accept it.

@UtmostOutdoors 4 ай бұрын

It's the first step in allowing yourself to learn new things! If you are the smartest person on the room, you're not learning. The real trick is recognizing how much you don't know, so that you can allow your curiosity to guide you to new discoveries... I personally look at this dredge project as just that: I don't have a clue how to optimize all this dredge stuff... It can't be as complex as rocket science, and yet there are rockets than can take off and land! So in relation, something like this MUST be at least semi-achievable with some persistence and dedication.

@mrkus-nc7od 4 ай бұрын

I think you need to know the Drive behind this Nozzle test 😊 Kyle is tired of shoveling,s ( record shoveling 1000 shovels 🤔 )he is tuning in the impeller & nozzle size 🤔 to see what his best choices are for Max pressure out his 12 volt pump - pressure in turn means suction on the Drege in the end the Drive for it all is Gold & adventure - keep the video s coming - 😁 I can't believe your not panning for Gems and Gold No G & G video 🤔

@timberlinegoldprospecting2358 4 ай бұрын

I am anxious to know if you are going to continue manufacturing your Utmost highbanker?

@UtmostOutdoors 4 ай бұрын

I won't be able to make any more units for the 2024 gold mining season, but I am hopeful for 2025.

@darcysingler6742 4 ай бұрын

Good job 5star work as always.question I been building a jet drive for my pontoon chair/fish cat/ nothing online about it,I like gas motor instead electrical,princess aut9 post hole pounder drive.down drive

@UtmostOutdoors 4 ай бұрын

Sounds like a cool project. Not sure how I would approach that.

@selfretired3025 4 ай бұрын

It sounds like you’ll be re-doing some of this testing with a 2" hose... yes?

@UtmostOutdoors 4 ай бұрын

The little 2000gph pump I'm using is fine to test with a 1-1/8" hose like this, but I will be testing a 2" dredge afterwards and that is why I got the 2" flow meter.

@illernpiller 4 ай бұрын

Wish you tested bigger pumps like keene, but then that would cost a whole lot =D

@UtmostOutdoors 4 ай бұрын

It would be cool to test different venturi deigns with a Keene pump... but I bet they have already done a good job of designing their pumps!

@illernpiller 4 ай бұрын

@@UtmostOutdoors well I was more after the optimal jet size based on the pump. Normally you divide it by 4 to get the proper size and such as you shoved in your video, but it also depends on the pump specs. If you have an oversized pump you can basically increase it a bit.

@UtmostOutdoors 4 ай бұрын

@illernpiller I would trust the divide by 4 rule is pretty accurate to use with most keene pumps. I will test single jet vs dual jet, as well as jet angle and taper in a future video. These results should be transferable to any pump, so hopefully we can learn something.

@illernpiller 4 ай бұрын

@@UtmostOutdoors yes that rule is the one to go by, but if you have an oversized pump for the dredge you can increase the jet size and make it suck even more. =D

@selfretired3025 4 ай бұрын

Have you met any dredgers yet... to showcase your upcoming new product?

@UtmostOutdoors 4 ай бұрын

I've spoken to a few, but I'm just focusing on optimizing the plumbing efficiency for now...

@selfretired3025 4 ай бұрын

@@UtmostOutdoors loan it out for a day, when it's ready, to those who YT... for more exposure... and feedback!

@brianthayer9784 4 ай бұрын

And by way we where use twin 3700 gph pumps

@UtmostOutdoors 4 ай бұрын

I suspect I'll be moving up in pump size when it comes to making something functional... Hopefully I can learn something with the little 2000gph initially. Do you have a preferred pump brand you like?

@brianthayer9784 4 ай бұрын

@@UtmostOutdoors no we played with different makes found that the cheap ones worked the best at 60 dollars US for the cheap one now start using 2 pump you will get what you are looking for with y connector.

@Graham_OntheGoldagain 4 ай бұрын

Will you be selling your impellers?

@UtmostOutdoors 4 ай бұрын

If I can create something that shows a reasonable improvement over stock, I would consider it. Would you spend $20 to see a 20% improvement on output? I'm still just testing away at this point, but now that I think about it, yeah, I should make these available once I get a winner!

@Graham_OntheGoldagain 4 ай бұрын

@@UtmostOutdoors Yeah I sure would and I think others would too. 👍

@JohanFroloff81 4 ай бұрын

Try using an oval nozzle. Your Impellers are too restrictive in my opinion. You are not moving air, that can compress in volume. That is why your factory impeller is doing better. More water volume. You can probably find an app for all your calculations. but where is the fun in that.

@UtmostOutdoors 4 ай бұрын

I'll definitely try some different nozzle shapes once I get to the jet log phase. I'm curious what will work best!

@mohammednovalija 4 ай бұрын

It may have been more illuminating for me if there was shown an example of a somewhat working product. And THEN start investigating ways to improve the product. Are you trying to get a Volkswagon Beetle to tow a caravan ?

@UtmostOutdoors 4 ай бұрын

I think the VW towing a caravan concept is a good one. But really I have very little expectation that this pump will run a very big dredge, I'm just trying to see what efficiency can be gained so that I can scale things up at some point. I'm hoping for a small proof of concept soon, but these things take time. I'm busy learning 3D modeling in parallel with making these little update videos.

@mohammednovalija 4 ай бұрын

@@UtmostOutdoors Let's take a step up in time and now have an optimum impeller design. So enough with the pump. What will the next stage of KZfaq videos be presenting ?

@UtmostOutdoors 4 ай бұрын

@goldsluicetinkerer cats. 🐈 🐈‍⬛️ 😺 🐱 Impeller first, then venturi jet. Then once good suction is found, maybe a compact electric dredge. Once I get some real free time, I'll be back out looking for gold locally, but that may be a couple months.

@mohammednovalija 4 ай бұрын

@@UtmostOutdoors Okay - looks like lean pickings for me for a couple months then.

@UtmostOutdoors 4 ай бұрын

@@mohammednovalija Yep. Check back in 2 months, or just filter through the titles, I won't do any clickbait, so it will be easy to pick what's worth seeing.