Juergensen Marine - HAMMERHEAD

Muzz · 14th January 2006, 14:52

Quote: (Originally Posted by jradomski)

Kevin's plating is quite thick.. He had to have custom dies made for the fastners because of this..
He is using a good grade of aluminum (same as on current scuba tanks), any scratches should quickly turn to aluminum oxide and arrest further corrosion..

I know he has also done testing with an electrical current and purposedly added scratches to also speed things up.. so far so good.. We will just have to see what the long time brings..

The plating is heavy at the fastners so, the SS never comes in contact with aluminum just nickel.. The sS screws themselves come in contact with helicoils which ackt as the sacrificial surface...

Every choice has its ups and downs.. The main reason for the SS case is that people are using his stuff quite deep and the SS cases hold up beyond what all but the insane would be diving..

You don't see regulators losing heir plating that easily do you??

1 hour in saltwater and the handsets are pitting, 2 hours in the water and the cases are pitting. There is a big problem, but I'm sure it will be fixed and changed.
DiveRite and Kevin are aware of the problem and working on a remedy.
Why not Delrin? Seems to work great on my meg.
Steve

***jradomski*** · 15th January 2006, 00:41

Quote: (Originally Posted by Muzz)

1 hour in saltwater and the handsets are pitting, 2 hours in the water and the cases are pitting. There is a big problem, but I'm sure it will be fixed and changed.
DiveRite and Kevin are aware of the problem and working on a remedy.
Why not Delrin? Seems to work great on my meg.
Steve

This would be the first I have heard of ANY problems on the handsets other than the bezels (all the problems seem to be the earliest units, that were done in the same batch).. There is definately a problem on some of the bezels... There are a couple of reports from people have scratched the surface badly, and then they get a bit of al oxide formation then it stops..

For the strength Kevin wants delrin (or any other plastci for that matter) is not strong enough at the same dimensions (people have been using the HH well beyond the depths people have used the meg on).. The handsets would have to be much heavier or liquid fill them like a few people have already done..

PCDiver · 15th January 2006, 08:59

Quote: (Originally Posted by jradomski)

This would be the first I have heard of ANY problems on the handsets other than the bezels (all the problems seem to be the earliest units, that were done in the same batch).. There is definately a problem on some of the bezels... There are a couple of reports from people have scratched the surface badly, and then they get a bit of al oxide formation then it stops..

For the strength Kevin wants delrin is not strong enough at the same dimensions.. The handsets would have to be much heavier..

It goes a bit further than just cosmetic scratches. I received two of the early handsets. The bezels on my HH corroded so badly after one dive in salt water that the transducer holes got blocked rendering both secondary and primary completely useless. But also the main body shows sign of corrosion. The unit of my friend has similar issues but it still works. I'm not too worried about it since Kevin is working on a solution. I also think this is problem limited to a small batch and not a general problem.

***jradomski*** · 15th January 2006, 09:56

Quote: (Originally Posted by PCDiver)

It goes a bit further than just cosmetic scratches. I received two of the early handsets. The bezels on my HH corroded so badly after one dive in salt water that the transducer holes got blocked rendering both secondary and primary completely useless. But also the main body shows sign of corrosion. The unit of my friend has similar issues but it still works. I'm not too worried about it since Kevin is working on a solution. I also think this is problem limited to a small batch and not a general problem.

I agree some of the bezels corroded quite badly.. The recommendation for anyone who has the alum bezels is to keep the transducer hole filled with silicon for the time being, this will prevent the problem you had..
the people can send the unit back to kevin to have them replaced, or if you feel confortable with replacing it you can do it yourself.. The bezels are strictly cosmetic. but if the hole to the transducer gets blocked it will screw things up.. He started sending them out with SS bezels, so We have to see how that works..

Your unit was one of the initial batch (I think the first batch was something like 25 sets or so)
We are just going to have to see what time brings.. I know Kevin has always taken care of any problems...

Added:
Spoke To JM.. There are a few from the original batch that have shown some pitting on the handests and others that have alot of SW hours on it without any problems.. Both DR and the owners (that contacted Jm) of said units in question were told to send the units back, and they would be taken care of.. JM consulted several material experts and all feel there was probably a problem during the nikel plating process of these units in question.

David Heavey · 1st February 2006, 13:32

Dear All
Having used both the plastic and the my new metal Hammerhead controls and having used my partners Evolution with Vision I still think the Hammerhead has the edge in ease of control especially under difficult diving conditions.

But of course there is less to fiddle with whilst doing long hangs.

David

14th January 2006, 14:52	#21 (permalink)
Muzz New Member Current Rebreather/s: Megalodon Optima Other Rebreather/s: Join Date: Mar 2005 Location: Pompano Beach FL Posts: 144	Re: Juergensen Marine - HAMMERHEAD Quote: (Originally Posted by jradomski) Kevin's plating is quite thick.. He had to have custom dies made for the fastners because of this.. He is using a good grade of aluminum (same as on current scuba tanks), any scratches should quickly turn to aluminum oxide and arrest further corrosion.. I know he has also done testing with an electrical current and purposedly added scratches to also speed things up.. so far so good.. We will just have to see what the long time brings.. The plating is heavy at the fastners so, the SS never comes in contact with aluminum just nickel.. The sS screws themselves come in contact with helicoils which ackt as the sacrificial surface... Every choice has its ups and downs.. The main reason for the SS case is that people are using his stuff quite deep and the SS cases hold up beyond what all but the insane would be diving.. You don't see regulators losing heir plating that easily do you?? 1 hour in saltwater and the handsets are pitting, 2 hours in the water and the cases are pitting. There is a big problem, but I'm sure it will be fixed and changed. DiveRite and Kevin are aware of the problem and working on a remedy. Why not Delrin? Seems to work great on my meg. Steve
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15th January 2006, 00:41	#22 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,095	Re: Juergensen Marine - HAMMERHEAD Quote: (Originally Posted by Muzz) 1 hour in saltwater and the handsets are pitting, 2 hours in the water and the cases are pitting. There is a big problem, but I'm sure it will be fixed and changed. DiveRite and Kevin are aware of the problem and working on a remedy. Why not Delrin? Seems to work great on my meg. Steve This would be the first I have heard of ANY problems on the handsets other than the bezels (all the problems seem to be the earliest units, that were done in the same batch).. There is definately a problem on some of the bezels... There are a couple of reports from people have scratched the surface badly, and then they get a bit of al oxide formation then it stops.. For the strength Kevin wants delrin (or any other plastci for that matter) is not strong enough at the same dimensions (people have been using the HH well beyond the depths people have used the meg on).. The handsets would have to be much heavier or liquid fill them like a few people have already done.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated. Last edited by jradomski : 15th January 2006 at 20:26.
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15th January 2006, 08:59	#23 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 999	Re: Juergensen Marine - HAMMERHEAD Quote: (Originally Posted by jradomski) This would be the first I have heard of ANY problems on the handsets other than the bezels (all the problems seem to be the earliest units, that were done in the same batch).. There is definately a problem on some of the bezels... There are a couple of reports from people have scratched the surface badly, and then they get a bit of al oxide formation then it stops.. For the strength Kevin wants delrin is not strong enough at the same dimensions.. The handsets would have to be much heavier.. It goes a bit further than just cosmetic scratches. I received two of the early handsets. The bezels on my HH corroded so badly after one dive in salt water that the transducer holes got blocked rendering both secondary and primary completely useless. But also the main body shows sign of corrosion. The unit of my friend has similar issues but it still works. I'm not too worried about it since Kevin is working on a solution. I also think this is problem limited to a small batch and not a general problem.
(Online)

15th January 2006, 09:56	#24 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,095	Re: Juergensen Marine - HAMMERHEAD Quote: (Originally Posted by PCDiver) It goes a bit further than just cosmetic scratches. I received two of the early handsets. The bezels on my HH corroded so badly after one dive in salt water that the transducer holes got blocked rendering both secondary and primary completely useless. But also the main body shows sign of corrosion. The unit of my friend has similar issues but it still works. I'm not too worried about it since Kevin is working on a solution. I also think this is problem limited to a small batch and not a general problem. I agree some of the bezels corroded quite badly.. The recommendation for anyone who has the alum bezels is to keep the transducer hole filled with silicon for the time being, this will prevent the problem you had.. the people can send the unit back to kevin to have them replaced, or if you feel confortable with replacing it you can do it yourself.. The bezels are strictly cosmetic. but if the hole to the transducer gets blocked it will screw things up.. He started sending them out with SS bezels, so We have to see how that works.. Your unit was one of the initial batch (I think the first batch was something like 25 sets or so) We are just going to have to see what time brings.. I know Kevin has always taken care of any problems... Added: Spoke To JM.. There are a few from the original batch that have shown some pitting on the handests and others that have alot of SW hours on it without any problems.. Both DR and the owners (that contacted Jm) of said units in question were told to send the units back, and they would be taken care of.. JM consulted several material experts and all feel there was probably a problem during the nikel plating process of these units in question. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated. Last edited by jradomski : 16th January 2006 at 17:24.
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1st February 2006, 13:32	#25 (permalink)
David Heavey New Member Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Other Rebreather/s: Join Date: Oct 2005 Location: UK, Worcester Posts: 18	Re: Juergensen Marine - HAMMERHEAD Dear All Having used both the plastic and the my new metal Hammerhead controls and having used my partners Evolution with Vision I still think the Hammerhead has the edge in ease of control especially under difficult diving conditions. But of course there is less to fiddle with whilst doing long hangs. David
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