Oakview2
Silver Member
Omni, did you get the pm I sent you, found to articles that I cut and pasted from ICMJ
Infinity Jet Build (Hey John)
- Thread starter omnicron
- Start date
Let me step in here and give you some advice. Keep it simple. Use a tradition jet log. Notice the jet I have on my fast water dredge on your other thread. Its an original gold divers 6" circle jet. I know glen oats (micropedes) well and his home made circle jets. It was a biotch to build. The tolerances are high. I had issues of sand clogging the circle jet. One little clog effects suction greatly. In the end in my opinion a jet log works as well. Matter of fact. The new owner of my dredge hated the gold divers jet and traded it for a keen jet.
omnicron
Bronze Member
- Thread starter
- #44
I'm taking that under advisement. If I don't do a infinity then it would be a tri-jet. I'm having the infinity priced out right now at a machine shop. Plug-ups have been noted and I think I can minimize that with use of good screens around my foot valves. Think a small frame..12x12 with window screen. I can just brush the screens off once a hour and get back to it. At least that's what I think. Who knows it might end up costing more to make then it's worth, I don't have a lathe, then I would do a tri-jet. I'm a ex-metal worker and looking at the plans, it's not that hard to build. I just know that I don't want a normal jet. I cant see spending 450 bucks for a jet log or building one for less and getting less bang for my buck.
littlenugget1
Full Member
Hello just wanting to know if this is a tri-jet? I call it a quad- jet because it has 4- 3/4" tubes coming from the pressure chamber to the 6" pipe for the suction
G1sammons
Bronze Member
Well it's close but I be leave it would be a quad jet as it appears to have 4 inputs. I wonder how they perform thou?
I certainly don't think it has enough tube behind it to make it work properly ..
littlenugget1
Full Member
This is an older pic. it is now 24" from the flare. this is the jet that is on my 6" that me and omni floated yesterday. with 2- 6.5 HF and p180 pumps. in about 15"min we had a hole about the size of a 55 gal. barrel round and about 4' deep
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G1sammons
Bronze Member
Jets pretty strong then?
G1sammons
Bronze Member
This just kills me because I had the same jet in my shop and one of my guys threw it in the scrap metal box and away it went befor I coughs it ..
Guess I may try to build one
littlenugget1
Full Member
i think its really strong. ask Omni. he was impressed. The pressure chamber guage had just over 40 psi going to it. with both pumps going.
G1sammons
Bronze Member
Can you measure the input tubes? I need as much info as possible ...
I know with my standard jet log if you get your hand up in the nozzle it's very difficult to remove it without a breaker flap and getting rock off the nozzle without the breaker flap will suck all your engery away you can do it but I need the breaker flap conserve engery
littlenugget1
Full Member
will get some pics and messurments for you on the Quad-jet.
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I sent you a PM. Good luck with your project. G
omnicron
Bronze Member
- Thread starter
- #56
Buddy, my bad, I thought it was a tri-jet. I though I only counted 3 tubes.
G, it had serious suction with just 1 p180 running, with 2 going it was insane, but I guess I don't have nothing to baseline it off as I never seen a suction system working right. I found out that the log I was using was built wrong and that's why I was having issues all season.
Iamgman. Thanks for the info!
G, it had serious suction with just 1 p180 running, with 2 going it was insane, but I guess I don't have nothing to baseline it off as I never seen a suction system working right. I found out that the log I was using was built wrong and that's why I was having issues all season.
Iamgman. Thanks for the info!
omnicron
Bronze Member
- Thread starter
- #57
Buddy, my bad, I thought it was a tri-jet. I though I only counted 3 tubes.
G, it had serious suction with just 1 p180 running, with 2 going it was insane, but I guess I don't have nothing to baseline it off as I never seen a suction system working right. I found out that the log I was using was built wrong and that's why I was having issues all season.
Iamgman. Thanks for the info!
G, it had serious suction with just 1 p180 running, with 2 going it was insane, but I guess I don't have nothing to baseline it off as I never seen a suction system working right. I found out that the log I was using was built wrong and that's why I was having issues all season.
Iamgman. Thanks for the info!
Timberdoodle
Sr. Member
The major limiting factor in the trijet or quad jet etc..is the length of the jet tubes and their restriction. Massive PSI loss over even 3-4 inches at the velocities these jet tubes are running at. While the overall suction is improved, they are not as strong as a infinity/annular jet which has a shorter jet orifice. If you are going to build from scratch try building the tubes with a conical shape, decreasing the tube dimension from the manifold to the final orifice. Look at prolines log jets for example.
For those interested, here is a link to PSI loss that can be used for calculations to see what I mean. If you know the volume and PSI of the design you can input the length of the jet tube and diameter to find out the PSI loss. Hazen-Williams Equation - calculating Friction Head Loss in Water Pipes
For those interested, here is a link to PSI loss that can be used for calculations to see what I mean. If you know the volume and PSI of the design you can input the length of the jet tube and diameter to find out the PSI loss. Hazen-Williams Equation - calculating Friction Head Loss in Water Pipes
Hoser John
Gold Member
Them are quads and tris BUT same same mistake as gold divers made. When straight in your hitting a wall and THAT alone kills your jets performance. Just slip that sucker off to the side mount position like I do/did AND NO OBSTRUCTION to flow and you righteously rip arse like a madman. The real question is- HOW MUCH JET IS NEEDED TO DO THE JOB. That's where it all comes together and recovery is king. Taped jet logs are great but NOT really needed as fed by a PRE-PRESSUREIZED,STABILIZED AND HOMOGENEOUS SUPPLY which Proline does NOT use or keene,then the taper is needed. The whole idea is even pressure to all inductors hence taper not needed. Facts/figures are fun till you compare apples/oranges then jus' a pzzn' in the wind. Absolutely must agree that a BYATCH to build,but we sold'm like hotcakes for many a year. Glen definately builds righteous jets for sure as better quality than available from mass producers anyday and in every way. Goodman fer sure,missed emails from AK this year with pics but us old timers are slowing down a mite. Must run as workday n' the crik-John
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