Infinity Jet Build (Hey John)

[Timberdoodle]

I would have to argue the point that gold divers didn't make a mistake. The important element here is that the manifold area between the inlet and inner pipe is large enough to handle the water flow smoothly without causing restriction. Research into all manner of eductors produced over the past 100yrs and what is available today will clearly show no side angled input. The circular pattern of flow induced by this technique would not be beneficial to the flow to the individual jets. If the housing was not large enough than these findings could have been related to it's initial design.

The taper is a function of the jet orifice and has no relationship to the manifold which is just the volume distribution system. You would not put 4" of constant tube restriction on a log jet. The very same thing should be considered for the very same reason in a trijet etc..to get the maximum benefit of PSI energy delivered to water column. I do not rely on the calculations to prove a theory. I rely on calculations to verify my findings/tests. Food for thought I'd say.

 

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[G1sammons]

I would have to argue the point that gold divers didn't make a mistake. The important element here is that the manifold area between the inlet and inner pipe is large enough to handle the water flow smoothly without causing restriction. Research into all manner of eductors produced over the past 100yrs and what is available today will clearly show no side angled input. The circular pattern of flow induced by this technique would not be beneficial to the flow to the individual jets. If the housing was not large enough than these findings could have been related to it's initial design. The taper is a function of the jet orifice and has no relationship to the manifold which is just the volume distribution system. You would not put 4" of constant tube restriction on a log jet. The very same thing should be considered for the very same reason in a trijet etc..to get the maximum benefit of PSI energy delivered to water column. I do not rely on the calculations to prove a theory. I rely on calculations to verify my findings/tests. Food for thought I'd say.

I believe that john was referring to the poor design of the manifold in relation to the jet ... The abrupt change of direction inside the manifold causes problems with flow and pressure losses .... Kind of like what a 90 degree plumbing fitting....

 

[littlenugget1]

i dont think this is right. ... The abrupt change of direction inside the manifold causes problems with flow and pressure losses. because all you are doing is pounding the pressure chamber with water for the flow to go through the 3/4 tubes.

Now if you had john jet then would you have to have the tubes in a conical pattern to except the water flow i would think. on my jet spinning the water in a circle would not make a diffrence on pressure on the water going into my tubes. who knows i could be wrong! have been wrong before . But dredging a 4' hole and the size of a 55 gal. barrel in 15 min with a 6" is doing good.

Thanks for the info though
Buddy

 

[G1sammons]

i dont think this is right. ... The abrupt change of direction inside the manifold causes problems with flow and pressure losses. because all you are doing is pounding the pressure chamber with water for the flow to go through the 3/4 tubes. Now if you had john jet then would you have to have the tubes in a conical pattern to except the water flow i would think. on my jet spinning the water in a circle would not make a diffrence on pressure on the water going into my tubes. who knows i could be wrong! have been wrong before . But dredging a 4' hole and the size of a 55 gal. barrel in 15 min with a 6" is doing pearty good. Thanks for the info though Buddy

Was it loose pack ?

 

[littlenugget1]

the top foot was. but the amount of suction that i have is really unreal As omni said one engine was running my 6" really well. and with both it was suction was really moving the dirt.

 

[omnicron]

On a side note, heard from the machine shop... It'll cost me $405 to build the jet, and will weigh around 50+ pounds. That's using 6" sch40 pipe, 1/2" plate for the pressure chamber and 10" tube for the outside pressure chamber. If I build the pressure chamber out of aluminum I'll cut about 30 pounds but increase cost by about $60... I just don't know if its worth it.

I'm wondering if I shouldn't just go tri or quad jet....would be lots cheaper.

 

[littlenugget1]

i would have to agree with you omni . i can help you build a quad like mine you already know what it will do.

 

[panningjack]

On a side note, heard from the machine shop... It'll cost me $405 to build the jet, and will weigh around 50+ pounds. That's using 6" sch40 pipe, 1/2" plate for the pressure chamber and 10" tube for the outside pressure chamber. If I build the pressure chamber out of aluminum I'll cut about 30 pounds but increase cost by about $60... I just don't know if its worth it. I'm wondering if I shouldn't just go tri or quad jet....would be lots cheaper.

Schedule 40, 1/2" plate! Do the realize you're pumping water and rocks through it, not charging it with air. Lol. Hearing you two testify to the awesomeness of this quad jet makes me want to check it out.

 

[G1sammons]

On a side note, heard from the machine shop... It'll cost me $405 to build the jet, and will weigh around 50+ pounds. That's using 6" sch40 pipe, 1/2" plate for the pressure chamber and 10" tube for the outside pressure chamber. If I build the pressure chamber out of aluminum I'll cut about 30 pounds but increase cost by about $60... I just don't know if its worth it. I'm wondering if I shouldn't just go tri or quad jet....would be lots cheaper.

That crazy omni you could build it out of exhaust pipe ! Dam the jet would weight more than the dredge! You really don't need any thing that heavy .. Maybe 1/8 at the most!

 

[littlenugget1]

you are more than welcome to come check it out any time

 

[G1sammons]

i would have to agree with you omni . i can help you build a quad like mine you already know what it will do.

Can you get your hand out of the nozzle?

I'd say that's pretty normal for a 6" thou.. They eat the problem comes when you have to throw rocks enough to keep up with the suction that machine makes..
Do y'all have a flapper?
You need one but. You can easly make one from a regular swivel nozzle ... Plus there a lot lighter than fighting with the heavier flapper nozzles

 

[G1sammons]

i would have to agree with you omni . i can help you build a quad like mine you already know what it will do.

You do realized your ruined you'll never be able to run a 4 again ....lol

 

[littlenugget1]

no i dont have a flapper on wished i did though. as you said it would save some energy. lol yep i new it was over for a 4" for him when we put mine in the water. lol

 

[G1sammons]

no i dont have a flapper on wished i did though. as you said it would save some energy. lol yep i new it was over for a 4" for him when we put mine in the water. lol

just convert it !
All you need is a drill and some rubber matting .! Iv seen many swivel nozzle converted because the manufactured ones are so heavy!
Well if ya like I can sell ya one ! Lol

 

[Timberdoodle]

I believe that john was referring to the poor design of the manifold in relation to the jet ... The abrupt change of direction inside the manifold causes problems with flow and pressure losses .... Kind of like what a 90 degree plumbing fitting....

I understand what he was referring to and that was what I was addressing. If the area is made large enough you will not have the 18% loss he was referring to was the point, so inducing the flow on the side is not needed and could be detrimental to flow. Annular jet may benefit from this, but not individual jet tubes.

 

[omnicron]

Well talking with the machinist, sch40 was because of the threads, the 1/2 plate was because of the threads but we talked today about going thinner and we could, sch20 and 1/4 but the cost difference was only $20 and ran the risk of eventually stripping threads. Material was only like $100, the rest was labor. I guess I may do the quad yet...grrr

 

[G1sammons]

Well talking with the machinist, sch40 was because of the threads, the 1/2 plate was because of the threads but we talked today about going thinner and we could, sch20 and 1/4 but the cost difference was only $20 and ran the risk of eventually stripping threads. Material was only like $100, the rest was labor. I guess I may do the quad yet...grrr

Do you have access to a welder and plasma cutter.
If so just make ya a quad or tri jet.. I'm fixing to make one just waiting on material... It's not very complex just copy the one little nugget has!
Tell ya what you set up the shipping on that. Hose and I'll make 2 of these jets.and drop one on hose . I can drop at a freight termanl in Nashville tn..
The frieght copany I work with doesn't go up that way. So my hands are tied ... Unless you Wana make the drive..

 

[omnicron]

Do you have access to a welder and plasma cutter.
If so just make ya a quad or tri jet.. I'm fixing to make one just waiting on material... It's not very complex just copy the one little nugget has!
Tell ya what you set up the shipping on that. Hose and I'll make 2 of these jets.and drop one on hose . I can drop at a freight termanl in Nashville tn..
The frieght copany I work with doesn't go up that way. So my hands are tied ... Unless you Wana make the drive..

Well Nugget is and was a sheet metal worker. I medically retired from that after about 17 years or so. I think I'm going to go the quad-jet route...It's not all that hard to build from the looks of it. I can have the pieces cut out at one of the places I used to work. They have a computerized plasma table but I'm sure I could just cut the pieces out by hand with my snips if I go with 18ga paint lock. Welding isn't a issue either. I'm wondering if I couldn't expand on this design and maybe make it with more tubes....

 

[G1sammons]

Well Nugget is and was a sheet metal worker. I medically retired from that after about 17 years or so. I think I'm going to go the quad-jet route...It's not all that hard to build from the looks of it. I can have the pieces cut out at one of the places I used to work. They have a computerized plasma table but I'm sure I could just cut the pieces out by hand with my snips if I go with 18ga paint lock. Welding isn't a issue either. I'm wondering if I couldn't expand on this design and maybe make it with more tubes....

probably so It would be more like the new jet design on youtube . Which looks pretty good some Indian guy did it .just do a search on youtube for dredge jet ,he has like 6 tubes instead of 3 or 4 .in his design it looks pretty good but may be easyer to make....
I see too many complaints on the infinity jet so I'm not gona go that way. Think in probably do something like the quad or tri jet .. Just make sure you set it up for the pumps your gona run!

 

[Kruzman]

I built a 2in couple jet with 16 jets around the circumference. No clogs but all the advantages of the infinity.