HammerHead Revisions and Issues

jkaterenchuk · 20th November 2006, 01:49

I recently started using a product from Ideal company called Noalox. Its available at any commerical electrical supplier. Its a anti oxidant and conductive material specifally made for aluminum to aluminum joints. A 1/2 oz tube costs about $4.00. You only need alittle on each of the cap threads.

Mark Chase · 20th November 2006, 15:59

Quote: (Originally Posted by jkaterenchuk)

I recently started using a product from Ideal company called Noalox. Its available at any commerical electrical supplier. Its a anti oxidant and conductive material specifally made for aluminum to aluminum joints. A 1/2 oz tube costs about $4.00. You only need alittle on each of the cap threads.

Damed site cheaper than silver grease. Thanks ill try and source some.

ATB

Mark Chase

jkaterenchuk · 20th November 2006, 18:20

Quote: (Originally Posted by Mark Chase)

Damed site cheaper than silver grease. Thanks ill try and source some.

ATB

Mark Chase

Mark

They have a UK site that lists dealers.

IDEAL INDUSTRIES - Home

In the past I used this stuff to maintain good ground continuity on towers and aluminum antenna joints. You need to make sure the surfaces are clear of oxidation before application.

John

smokey · 29th April 2007, 21:24

Primary Hand set, 7.06 EJ 09. Secondry Hand set, 5.05 EJ10.

Insparation Unit.

When the cells are unpluged for drying, and prim unit switches on, C1 and C2 are reading 0.02 . 0.02 with C3 voted out. Secondry unit all 0.00 with error message. I know calabration will take in to account these readings when the cells are connected. Stray mV must be present.
Thought I would post to see if anyone has come across this and to make sure this is not a problem.
Enjoying these hand sets far cooler and better set up than classic units

although the bezzels are showing some corrossion after 8 hr's of use, not a problem at the moment

as long as it stays this way.

heyydude · 30th April 2007, 00:42

Hi,

This is normal. The HH is very sensitive to changes in mV coming from the Sensors. With no sensors plugged in, it is a little bit like a voltmeter hooked to nothing.

Since this is not a "normal" state (even dead sensors complete a circuit of some value) it doesn't affect your diving.

Glad to hear you are enjoying your set. There are about 260 or so other Inspo HH's out there by now - so you should be in good company.

If you ever have any questions, you can ask them here, or send an e-mail directly to me at <kevin@rebreather.us>

Take care,

Kevin Juergensen
Juergensen Marine, Inc.

***jradomski*** · 30th April 2007, 00:45

Quote: (Originally Posted by smokey)

Primary Hand set, 7.06 EJ 09. Secondry Hand set, 5.05 EJ10.

Insparation Unit.

When the cells are unpluged for drying, and prim unit switches on, C1 and C2 are reading 0.02 . 0.02 with C3 voted out. Secondry unit all 0.00 with error message. I know calabration will take in to account these readings when the cells are connected. Stray mV must be present.
Thought I would post to see if anyone has come across this and to make sure this is not a problem.
Enjoying these hand sets far cooler and better set up than classic units

although the bezzels are showing some corrossion after 8 hr's of use, not a problem at the moment

as long as it stays this way.

without setting a lower limit to artificially null a reading a true reading of zero is not likely (unless you go differential with positive and negative supplies)

the signals from the cells would be sent to an op amp to amplify the signals.. even the besy opamps (even ones that say they are rail to rail) really cant reach the 2 supply rails (power and ground) so a signal of zero into the amp will not have a zero output hence the a/d converter will read some value..

what this means is that there will be a small range of values that may give the same output.. depending on the op amp the offset can be from a few micro volts up to a few milivolts and will vary with temperature and the individual op amp..

There are ways to nullify this error but for most applications its not necessary or addressed in the design..

smokey · 30th April 2007, 16:49

Thanks Guys, now thats customer service, wasnt worried but its nice to know.

SkinAndScuba · 3rd May 2007, 23:22

Has the altitude decompression been rectified yet.? I do most of my diving at altitude. HH supplied with Optima January of this year.

Quote: (Originally Posted by jradomski)

There are 4 Major versions of the hammerhead plus minor revisions within the revisions.

A) worked well, had some software bugs initially.. Deco wasnt GF at the start, The original sp maintenence was like a mk 15.. GF was added and proportional sp control was added thats depth adjusted.. Used costly batteries with no other options (reason for rev b)

There was also some depth irregularities (slightly deeper than actual) - corrected by adjusting for Altitude of the factory during calibration, and the Set sea level option that was added to correct for changes of ambient pressure at sea level.

B) was a crap shoot some worked perfectly others had bad battery drain (defective component plus a marginal assembly technique from a vendor) also may have prevented some units from going to sleep at the correct interval (took longer) but otherwise worked reliably.. Deco a little too agressive (compared against standard gf settings) after long surface intervals.

C) worked great, only possible negative Deco a little too agressive (compared against standard gf settings) after long surface intervals

** revs A,B, C had a diagnostic menu, while this was very useful to someone who knew how to use it a few people erased the calibration data of their pressure sensors.. TRhis was removed in "rev c+"

C+) same electronics as above but analog sensor replaced by digital sensor.. new pressure transduce created some leaking and depth irregularities.. Most people have no Problem but there have been some irregularities.. KJ is working with intersema's engineers to come up with a 100% reliable solution.. The HH is not alone here anyone who has used their sensors has had some issues..

first rev - The original Nikel prototyes are perfect and still are.. Unfortunately the machinist who was able to do these, had substance and legal issues.. Cost JM a bundle, next machine shop had QC problems with the nikel plating.. Some units have been in the field for a while with zero defects, and others.. not so good.

second rev-
AL bezels replaced by SS bezels free of charge.. solved most issues caused by the bezel..

Third Rev- Switched to hard annodizing with teflon coat.. This is tough and hard to screw up.. also makes wet switch less sensitive.

fourth Rev - battery caps now have threads flattened, cures intermittent connections on the few units that have had it.. User can do this themselves by squeezin down on the threads with pliers or the like on 4 sides.

fifth rev (started doing it 6/19/06)- JM is making the holes in the SS bezel larger, should negate the need to fill with silicon and depth issues in silty and sometime salt water.. This could be done by the user as well if they wanted..

Probable Future rev - new xducer mount..

Issues if people see with current units..

Depth is very deep even on surface - moisture got behind pressure sensor, needs to be sent back..

A few units leaked.. a few leaked around the pressure sensor, 2 or 3 units had defective piezo switches.. Back to JM.. New testing procedures should prevent future units from getting out of the factory with these problems..

Only software negatives I can think of are:

A) the TTS is very conservative (not necessarily a bad thing).. Its a worse case calculation based on current loop conditions.. The TTS gets truer as you get closer to the surface..

B) With very long TTS the switches may not be immediately recognized.. The switches are not checked while its calculating the TTS.. You may have to wait until the stops, gases and po2 are being updated..

C) Deco schedule at altitude should not be followed..

D) unit must be calibrated on 100% and at sea level (or use a trick to get around it).. This is a design (philosophy) choice and unlikely to be changed.

E) when in PO2 mode the blinks on the DIVA are a little to fast to count accurately (other than 1,2 or 3 blinks that can be pretty uch recognized subliminaly) and should be slowed down a bit.

Only Hardware Negative:

No battery monitoring, I would like to see this, But the end not really necessary if recommendations are followed.

Some additional notes:

Fischer connectors.. Some people had nothing but trouble, others have had no issues ( I only had 1 dive that I had any issue with the fischer connector and it was caused by me while on the boat between dives).. By design these connectors have to be treated pretty carefully, any imperfection on the plug (ding, scratch ect) and thats it..

Sometime after Rev B's came out, hard plumbing became an option, now its standard fare.. Personally I miss the removable handsets.

recently changed (~06/2006) the design of the DIVA.. The cap is more robust than in the past and slightly larger but functionally the same.

***jradomski*** · 3rd May 2007, 23:54

Quote: (Originally Posted by SkinAndScuba)

Has the altitude decompression been rectified yet.? I do most of my diving at altitude. HH supplied with Optima January of this year.

nope no support for altitude decompression or calibration at altitude.. Last time I asked Kevin he wasnt planning an update..

smokey · 14th June 2007, 16:32

Quote: (Originally Posted by smokey)

Primary Hand set, 7.06 EJ 09. Secondry Hand set, 5.05 EJ10.

Insparation Unit.

When the cells are unpluged for drying, and prim unit switches on, C1 and C2 are reading 0.02 . 0.02 with C3 voted out. Secondry unit all 0.00 with error message. I know calabration will take in to account these readings when the cells are connected. Stray mV must be present.
Thought I would post to see if anyone has come across this and to make sure this is not a problem.
Enjoying these hand sets far cooler and better set up than classic units

although the bezzels are showing some corrossion after 8 hr's of use, not a problem at the moment

as long as it stays this way.

A week in Scappa Flow has tested my HammerHead and disapointingly I missed two dives,
After the first dive new 1.5v batts good ones 1hr dive, on surface prim unit would not auto shut down, after a three hour interval, second dive the hand set started re booting on the surface thankfully, time to abort dive,
the next 5 days diving no problems with new batts in prim H/S every day changing secondry with the scrubber, 3-3 1/2 hours dive time.
A morning dive on the last day saw no problems, after 4 hr surface int, new scrubber new batts in both hand sets, calabration and prebreathed for a good 5 min's no probs, when I hit the watet primary unit goes dead, no reboot nothing.
On my return home hand sets are working fine, the + batt terminal on the prim H/S looks dirty and is the only cause I can spot, unless internal fault.
I am now concerned about the life span of the plating on the hand sets 25 hours from new and they look old.

20th November 2006, 01:49	#91 (permalink)
jkaterenchuk . Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Other Rebreather/s: Join Date: May 2006 Location: Lititz, PA Posts: 1,086	Re: HammerHead Revisions and Issues I recently started using a product from Ideal company called Noalox. Its available at any commerical electrical supplier. Its a anti oxidant and conductive material specifally made for aluminum to aluminum joints. A 1/2 oz tube costs about $4.00. You only need alittle on each of the cap threads.
(Offline)

20th November 2006, 15:59	#92 (permalink)
Mark Chase RBW Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,854	Re: HammerHead Revisions and Issues Quote: (Originally Posted by jkaterenchuk) I recently started using a product from Ideal company called Noalox. Its available at any commerical electrical supplier. Its a anti oxidant and conductive material specifally made for aluminum to aluminum joints. A 1/2 oz tube costs about $4.00. You only need alittle on each of the cap threads. Damed site cheaper than silver grease. Thanks ill try and source some. ATB Mark Chase __________________ See my "Doing It Chasey" video where I'm locked into a padded room, naked, with two ball bearings and within an Hour, I manage to lose one and break the other!!! Kevin Juergensen 16/11/08 [/quote]
(Online)

20th November 2006, 18:20	#93 (permalink)
jkaterenchuk . Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Other Rebreather/s: Join Date: May 2006 Location: Lititz, PA Posts: 1,086	Re: HammerHead Revisions and Issues Quote: (Originally Posted by Mark Chase) Damed site cheaper than silver grease. Thanks ill try and source some. ATB Mark Chase Mark They have a UK site that lists dealers. IDEAL INDUSTRIES - Home In the past I used this stuff to maintain good ground continuity on towers and aluminum antenna joints. You need to make sure the surfaces are clear of oxidation before application. John
(Offline)

29th April 2007, 21:24	#94 (permalink)
smokey RBW Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jan 2007 Location: Scotland Posts: 91	Re: HammerHead Revisions and Issues Primary Hand set, 7.06 EJ 09. Secondry Hand set, 5.05 EJ10. Insparation Unit. When the cells are unpluged for drying, and prim unit switches on, C1 and C2 are reading 0.02 . 0.02 with C3 voted out. Secondry unit all 0.00 with error message. I know calabration will take in to account these readings when the cells are connected. Stray mV must be present. Thought I would post to see if anyone has come across this and to make sure this is not a problem. Enjoying these hand sets far cooler and better set up than classic units although the bezzels are showing some corrossion after 8 hr's of use, not a problem at the moment as long as it stays this way.
(Offline)

30th April 2007, 00:42	#95 (permalink)
heyydude King of the Geeks Current Rebreather/s: MK 15.X Optima Other CCR Other Rebreather/s: Other CCR Join Date: May 2005 Location: Addison, Pennsylvania Posts: 380	Re: HammerHead Revisions and Issues Hi, This is normal. The HH is very sensitive to changes in mV coming from the Sensors. With no sensors plugged in, it is a little bit like a voltmeter hooked to nothing. Since this is not a "normal" state (even dead sensors complete a circuit of some value) it doesn't affect your diving. Glad to hear you are enjoying your set. There are about 260 or so other Inspo HH's out there by now - so you should be in good company. If you ever have any questions, you can ask them here, or send an e-mail directly to me at <kevin@rebreather.us> Take care, Kevin Juergensen Juergensen Marine, Inc.
(Offline)

30th April 2007, 00:45	#96 (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: 3,113	Re: HammerHead Revisions and Issues Quote: (Originally Posted by smokey) Primary Hand set, 7.06 EJ 09. Secondry Hand set, 5.05 EJ10. Insparation Unit. When the cells are unpluged for drying, and prim unit switches on, C1 and C2 are reading 0.02 . 0.02 with C3 voted out. Secondry unit all 0.00 with error message. I know calabration will take in to account these readings when the cells are connected. Stray mV must be present. Thought I would post to see if anyone has come across this and to make sure this is not a problem. Enjoying these hand sets far cooler and better set up than classic units although the bezzels are showing some corrossion after 8 hr's of use, not a problem at the moment as long as it stays this way. without setting a lower limit to artificially null a reading a true reading of zero is not likely (unless you go differential with positive and negative supplies) the signals from the cells would be sent to an op amp to amplify the signals.. even the besy opamps (even ones that say they are rail to rail) really cant reach the 2 supply rails (power and ground) so a signal of zero into the amp will not have a zero output hence the a/d converter will read some value.. what this means is that there will be a small range of values that may give the same output.. depending on the op amp the offset can be from a few micro volts up to a few milivolts and will vary with temperature and the individual op amp.. There are ways to nullify this error but for most applications its not necessary or addressed in the design.. __________________ 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.
(Offline)

30th April 2007, 16:49	#97 (permalink)
smokey RBW Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jan 2007 Location: Scotland Posts: 91	Re: HammerHead Revisions and Issues Thanks Guys, now thats customer service, wasnt worried but its nice to know.
(Offline)

3rd May 2007, 23:22	#98 (permalink)
SkinAndScuba New Member Current Rebreather/s: Optima Other Rebreather/s: Optima Join Date: Oct 2006 Location: South Africa Three Rivers Posts: 40	Re: HammerHead Revisions and Issues Has the altitude decompression been rectified yet.? I do most of my diving at altitude. HH supplied with Optima January of this year. Quote: (Originally Posted by jradomski) There are 4 Major versions of the hammerhead plus minor revisions within the revisions. A) worked well, had some software bugs initially.. Deco wasnt GF at the start, The original sp maintenence was like a mk 15.. GF was added and proportional sp control was added thats depth adjusted.. Used costly batteries with no other options (reason for rev b) There was also some depth irregularities (slightly deeper than actual) - corrected by adjusting for Altitude of the factory during calibration, and the Set sea level option that was added to correct for changes of ambient pressure at sea level. B) was a crap shoot some worked perfectly others had bad battery drain (defective component plus a marginal assembly technique from a vendor) also may have prevented some units from going to sleep at the correct interval (took longer) but otherwise worked reliably.. Deco a little too agressive (compared against standard gf settings) after long surface intervals. C) worked great, only possible negative Deco a little too agressive (compared against standard gf settings) after long surface intervals ** revs A,B, C had a diagnostic menu, while this was very useful to someone who knew how to use it a few people erased the calibration data of their pressure sensors.. TRhis was removed in "rev c+" C+) same electronics as above but analog sensor replaced by digital sensor.. new pressure transduce created some leaking and depth irregularities.. Most people have no Problem but there have been some irregularities.. KJ is working with intersema's engineers to come up with a 100% reliable solution.. The HH is not alone here anyone who has used their sensors has had some issues.. first rev - The original Nikel prototyes are perfect and still are.. Unfortunately the machinist who was able to do these, had substance and legal issues.. Cost JM a bundle, next machine shop had QC problems with the nikel plating.. Some units have been in the field for a while with zero defects, and others.. not so good. second rev- AL bezels replaced by SS bezels free of charge.. solved most issues caused by the bezel.. Third Rev- Switched to hard annodizing with teflon coat.. This is tough and hard to screw up.. also makes wet switch less sensitive. fourth Rev - battery caps now have threads flattened, cures intermittent connections on the few units that have had it.. User can do this themselves by squeezin down on the threads with pliers or the like on 4 sides. fifth rev (started doing it 6/19/06)- JM is making the holes in the SS bezel larger, should negate the need to fill with silicon and depth issues in silty and sometime salt water.. This could be done by the user as well if they wanted.. Probable Future rev - new xducer mount.. Issues if people see with current units.. Depth is very deep even on surface - moisture got behind pressure sensor, needs to be sent back.. A few units leaked.. a few leaked around the pressure sensor, 2 or 3 units had defective piezo switches.. Back to JM.. New testing procedures should prevent future units from getting out of the factory with these problems.. Only software negatives I can think of are: A) the TTS is very conservative (not necessarily a bad thing).. Its a worse case calculation based on current loop conditions.. The TTS gets truer as you get closer to the surface.. B) With very long TTS the switches may not be immediately recognized.. The switches are not checked while its calculating the TTS.. You may have to wait until the stops, gases and po2 are being updated.. C) Deco schedule at altitude should not be followed.. D) unit must be calibrated on 100% and at sea level (or use a trick to get around it).. This is a design (philosophy) choice and unlikely to be changed. E) when in PO2 mode the blinks on the DIVA are a little to fast to count accurately (other than 1,2 or 3 blinks that can be pretty uch recognized subliminaly) and should be slowed down a bit. Only Hardware Negative: No battery monitoring, I would like to see this, But the end not really necessary if recommendations are followed. Some additional notes: Fischer connectors.. Some people had nothing but trouble, others have had no issues ( I only had 1 dive that I had any issue with the fischer connector and it was caused by me while on the boat between dives).. By design these connectors have to be treated pretty carefully, any imperfection on the plug (ding, scratch ect) and thats it.. Sometime after Rev B's came out, hard plumbing became an option, now its standard fare.. Personally I miss the removable handsets. recently changed (~06/2006) the design of the DIVA.. The cap is more robust than in the past and slightly larger but functionally the same. __________________ Kenneth Wessels #19799 Skin & Scuba The only South African Optima diver 2007/01-2008/07, and to my knowledge the only Africa Optima diver.
(Offline)

3rd May 2007, 23:54	#99 (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: 3,113	Re: HammerHead Revisions and Issues Quote: (Originally Posted by SkinAndScuba) Has the altitude decompression been rectified yet.? I do most of my diving at altitude. HH supplied with Optima January of this year. nope no support for altitude decompression or calibration at altitude.. Last time I asked Kevin he wasnt planning an update.. __________________ 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.
(Offline)

14th June 2007, 16:32	#100 (permalink)
smokey RBW Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jan 2007 Location: Scotland Posts: 91	Re: HammerHead Revisions and Issues Quote: (Originally Posted by smokey) Primary Hand set, 7.06 EJ 09. Secondry Hand set, 5.05 EJ10. Insparation Unit. When the cells are unpluged for drying, and prim unit switches on, C1 and C2 are reading 0.02 . 0.02 with C3 voted out. Secondry unit all 0.00 with error message. I know calabration will take in to account these readings when the cells are connected. Stray mV must be present. Thought I would post to see if anyone has come across this and to make sure this is not a problem. Enjoying these hand sets far cooler and better set up than classic units although the bezzels are showing some corrossion after 8 hr's of use, not a problem at the moment as long as it stays this way. A week in Scappa Flow has tested my HammerHead and disapointingly I missed two dives, After the first dive new 1.5v batts good ones 1hr dive, on surface prim unit would not auto shut down, after a three hour interval, second dive the hand set started re booting on the surface thankfully, time to abort dive, the next 5 days diving no problems with new batts in prim H/S every day changing secondry with the scrubber, 3-3 1/2 hours dive time. A morning dive on the last day saw no problems, after 4 hr surface int, new scrubber new batts in both hand sets, calabration and prebreathed for a good 5 min's no probs, when I hit the watet primary unit goes dead, no reboot nothing. On my return home hand sets are working fine, the + batt terminal on the prim H/S looks dirty and is the only cause I can spot, unless internal fault. I am now concerned about the life span of the plating on the hand sets 25 hours from new and they look old.
(Offline)

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