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Infinity-Couple jet


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#1 Hoser John

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Posted 21 April 2012 - 10:20 AM

One of the simpliest and best jets ever made was the old couple jet by gold divers(RIP) and this is a homie jet that is much easier/cheaper to fab and parts from your local hardware store easily obtained. May your box run golden and tons a au 2 u 2 -John

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#2 Sgt. Dookie

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Posted 25 April 2012 - 04:58 PM

You mind explaining what this is used for? Its foreign to people like me :)

#3 Au Seeker

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Posted 25 April 2012 - 05:46 PM

You mind explaining what this is used for? Its foreign to people like me :)


It's for dredging, it would be in place of a normal powerjet like the one in this picture to create the suction.

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God, Family, Friends, and Gold

 

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#4 Gelmac2

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Posted 05 December 2014 - 01:37 PM

Not much explanations to novices eh ? a few more details could be useful . Thanks

 

PS : I know this thread is old , reviving it could be of help for some one .



#5 Gelmac2

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Posted 05 December 2014 - 03:44 PM

John, does this design has anything to do with your former business (PESCO) you keep talkin about ? Just curious . ;)



#6 Geo2

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Posted 26 December 2014 - 01:28 PM

There is a guy called "Glen Oates" who used to build Infinity jets. Don't know if he still on it or not. I hope if he reads this he would chime in as he is quite knowledgeable about the subject of Infinity/couple jets.

Last time I heard he was in Alaska.



#7 Geo2

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Posted 27 December 2014 - 03:47 AM

Hey John, I have some questions about Infinity jets. Can I use a regular semi trash/clean water pump? or this do not work and needs a pressure pump? I read all the time that for dredges you need a pressure pump as trash pumps are low on pressure. Pardon my questions as the dredging thing is new to me.

Thanks



#8 Hoser John

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Posted 27 December 2014 - 06:41 AM

Infinity jets were built by Gold Divers in Moundhouse east of Carson City and copied by many. I made at PESCO the flaired,pressure chamber fed tri-jet to easily rival the couple jet. Another tri jet,non chambered and not flaired was made by Dahlke for many years prior to Bobs passing RIP as a GREAT person,engineer,manufacturer and father. The good thing about the original"Couple-jet" from Gold Divers was that it was adjustable induction so you could use various model pump configurations to "tune" your suction. Huge differences between a  2 x 2" pump and a 2.5 x 2 or 3 x 3" in both psi/gpm and then throw in engine configurations and suction varies widely by up to 50%,a real gas saver but EXPENSIVE to get there-John



#9 middleforkminer2

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Posted 27 December 2014 - 07:11 AM

OK....it took me a few minutes before I finally grasped the concept, but it is interesting. It seems like it might be pretty time consuming for a DIY type to get it set up for good suction but once done, it would be great for portability as compared to a power jet...especially for  the larger sized dredges...the more I think about it, the more I like the idea...lots of possibilities. 



#10 Steel Pan

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Posted 27 December 2014 - 10:31 AM

Infinity jets were built by Gold Divers in Moundhouse east of Carson City and copied by many. I made at PESCO the flaired,pressure chamber fed tri-jet to easily rival the couple jet. Another tri jet,non chambered and not flaired was made by Dahlke for many years prior to Bobs passing RIP as a GREAT person,engineer,manufacturer and father. The good thing about the original"Couple-jet" from Gold Divers was that it was adjustable induction so you could use various model pump configurations to "tune" your suction. Huge differences between a  2 x 2" pump and a 2.5 x 2 or 3 x 3" in both psi/gpm and then throw in engine configurations and suction varies widely by up to 50%,a real gas saver but EXPENSIVE to get there-John

 

John, ya think it would work O.K. with my gravity system?

I can't see why not, I normally use a 3" nozzle.


G-pa made me do it, he gave me my first "Steel" pan.

#11 Hoser John

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Posted 28 December 2014 - 07:01 AM

As a rule of thumb gravity systems do not generate enough head/psi to run a jet. As a suction unit fine but run a jet not so fine BUT I haven't seen stats on your setup. I just suck'm up and use a sluicebox with no jet and let gravity do the rest.John-John

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#12 Geo2

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Posted 31 December 2014 - 08:17 AM

Infinity jets were built by Gold Divers in Moundhouse east of Carson City and copied by many. I made at PESCO the flaired,pressure chamber fed tri-jet to easily rival the couple jet. Another tri jet,non chambered and not flaired was made by Dahlke for many years prior to Bobs passing RIP as a GREAT person,engineer,manufacturer and father. The good thing about the original"Couple-jet" from Gold Divers was that it was adjustable induction so you could use various model pump configurations to "tune" your suction. Huge differences between a  2 x 2" pump and a 2.5 x 2 or 3 x 3" in both psi/gpm and then throw in engine configurations and suction varies widely by up to 50%,a real gas saver but EXPENSIVE to get there-John

 

Thanks John . From what you explained , it is economical to incorporate into the dredge but very expensive to build by the home builder, right ? Again , I want to just know if it can be run by a regular low pressure (clean water) pump or not.






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