[dive2dive2000]

Quote: (Originally Posted by Drmike)

Users who reported getting leaks through cell bodies

G4SSG
jradomski

Users who reported having cells fall apart

dive2dive2000
henckell
DrJM
ADward
CCRB



Agreed - and if you read the archives you see Ive ranted on about that design weakness in the classic as much as I have the Meg cell position - and for the same reason.

Hope your feeling better - looking forward to getting wet with yah

Hi guys,
Yes I did have cells fall apart, but Mike your thread was directed at or if anyone had experence this to a bad batch of cells produced and in fact at the time there were. This thread is more design flaw oriented so i dont see the corrolation in threads

[Mark Chase]

Quote: (Originally Posted by diverklondike)

So.... Let's check the facts here....

1) We have confirmed that "someone" did take a drill to the wrist units.... Potentally this was done by a third party as suggested by "Deepdiver"...

2) This also reconfirms that you did send Kevin J a set of wrist units that had special field developed modifications from an over active drill bit...

We love you Mark.... This is what happens when there have been to many blowouts due to weather and you become the

Dive Safe....

M

I am so with you on the blown out dives I suposed to be in France for the last three days doing the Lanfarnk and Warilda

Instead its 5 am and I am suposed to be doing a VAT (tax) return.


ATB

Mark

[sensor330]

Quote: (Originally Posted by Deepdiver)

Hi guys,

I have been a CCR diver and Instructor for many years now I am looking at moving on to the all new HH or the Meg. I have emailed KJ and obtained a few points but is anyone out there who can help?

I am after a quality made CCR, also long duration!

A have a few mates with the Meg and it looks a robust unit, but I also like the HH.......

If only I had the money for both!

What I need are good points and bad (If any).

I wait in anticipation

Nick

Well I can give you some input on both units. I currently dive a Meg and I previously used a Inspiration with HH electronics.

Without any better way to put this (sorry Kevin and HH users) I'd have to say that in my experience I found the HH very unreliable. I had to abort many dives due to battery/contact issues, usually only happened in one of the handsets but on two different occasions it happened in both. Yeah, I know people are going to say clean your contacts. Well I can tell you I did each and every time. I also used good quality batteries. After I sent my HH back for the last time, paid to upgrade the handsets and sold the unit while it was pretty much new then bought my Meg.

I love my Meg. Yes the electronics are simple relatively speaking but they are very reliable. I'd logged about 110 hours on my Meg so far and haven't missed a dive because of Rebreather malfunction.

As for the guy who said that a Meg is a gen 1 unit. I'd say the Meg is a serious unit for serious divers. The proof in that is in the reliability as I've all ready mentioned above.

As far as the BOV goes I don't really subscribe to that philosophy anyway. Radial scrubber, got one. BMCL, well if I want that option I would have bought a MK 15.5, boris, or a KISS.

Scott

[Drmike]

Quote: (Originally Posted by dive2dive2000)

Hi guys,
Yes I did have cells fall apart, but Mike your thread was directed at or if anyone had experence this to a bad batch of cells produced and in fact at the time there were. This thread is more design flaw oriented so i dont see the corrolation in threads

Unless we can be sure the mnf process has been changed to gaurantee another bad batch can never be made then the risk is still there. Has it been changed??

[Yessic]

Has anyone here actually dove the HH? did you like it or dislike it? Is it better or worse than other units that you have dove?

[jkaterenchuk]

Quote: (Originally Posted by Yessic)

Has anyone here actually dove the HH? did you like it or dislike it? Is it better or worse than other units that you have dove?

Sure some have dove the HH unit. The ones I know (there might be others) that responded on this thread are:

jradomski - instructor
mixaddict - instructor
diverklondike - diver
heyydude - the manufacturer

Each of them can respond if they wish but you might also find some of your answer using the search function.

John

[w ripley]

Quote: (Originally Posted by Yessic)

Has anyone here actually dove the HH? did you like it or dislike it? Is it better or worse than other units that you have dove?

I just sold my Meg to get a HH. That's not a completely accurate statement, as my Meg had HH electronics/head and a Golem BOV. I was about to purchase a radial scrubber when the HH came out. So, in many ways I had been modifying my Meg to somewhat parallel the HH features.

Both are excellent machines. The HH is definately heavier duty, but the Meg is heavy duty - it's a matter of degree. The breathing loop hoses on the HH are much heavier than the Meg's for example.

I like the longer canister of the HH and the fact that it basically stands up when I put it on my workbench. (You don't want to leave it unattended like that for long, but it's a nice feature.) I had added a tank boot to the bottom of my Meg's canister to get the unit up in the air a little.

The HH has a nice plastic pad on the bottom of its canister and the Meg is bare aluminum, a nice feature for the HH. Being longer/taller it's easier for me to get into and out of my harness, too.

I didn't like the 4 canister locks on the Meg and flew it with just the two nearest the lid handle most of the time, adding the other 2 when in overhead environments. While I like the way the HH's lid locks it does have a tendency to pick up grit when in messy conditions, which means it's just one more thing you have to clean well after a cave dive.

Both have over pressure relief valves on the bottom of the CLs, to facilitate purges, water dumps, etc. Both are also in the perfect position to fill up with silt/sand when pulling yourself along the bottom of a cave floor when sqeezing thru a tight restriction, making them impossible to operate. No one else is yelling about this so I doubt anyone will take a second look at where to located them. I've started covering the valve with plastic wrap and a rubber band when going somewhere I know it's going to be messy.

I had switched the O2 to the Meg's exhale side, as others had done. The HH comes that way.

I have removed the ADV and hose from the HH. Didn't like the operation and having all the hoses on my left shoulder. My Meg only used the ADV for Dil add, but I like the manual add better.

I like the fact that I can go on the Meg's website and look at options and costs, and order such things as spare O-ring kits. The HH is not there yet. I'm sure that I can call Kevin for a replacement part, but everyone has been twiching about while Jakub gets in the MetalSub tank mounts, for example.

The Metalsub tank mounts are very impressive on the HH. Apparently everyone else in the world except those in the USA have known that for ages. If I were to order a new Meg I would get it without tank mounts and go the Metalsub route (assuming Jakub gets them - he said it would be this week!)

The HH comes with a great plastic case/traveling case (like a Pelican case with wheels).

The HH's CL have built-in pockets to add weight.

I liked the Meg's CL attachment system, using the crotch strap, and modified the HH's CL attachment fittings to work with the Meg's crotch strap. Basically it pulls both counterlungs together vs straight down to the web belt.

I like having an absorbent pad in the Meg's head. I notice that there is always water on the sensor heads when I break down the HH. Since I was shown how to use paper towels for both the Meg's head and canister aborbent pads (which I use in the HH now), I might see if there is a way to snugg one into the HH's sensor area. No one's reporting any problems with it so I may or may not do that.

The loop hoses on the HH are designed for adults. There is room to put your hands on them and to twist-lock the fittings. Those on the Meg, IMO, are designed for people with much smaller hands than I have. That damn exhale connection on the head! Also, the loop hoses and fittings on the HH go togehter more logically. I put an arrow on my Meg's head to remember which hose screwed down which way.

I changed the BOV hose on the HH to a Miflex to help with flexibility looking right and left, and removed the quick disconnect off the O2-add at the head. I don't like those QDs (personally I like the Meg's QC4 better). So, I hand screw-on the hose, like you would do with many second stage fittings on a Rebreather and have one or two fewer O rings that can fail.

I think I have a better position when swimming with the HH, or less of a head's down position that I had with the Meg. That's probably just me, but I think it is also a function of the longer canister and moving some weight lower down, like a set of doubles would do.

The Meg came with over-pressure relief valves on the 1st stages, and not so with the (my) HH.

The HH has a very nice manifold for the O2 and Dil. Having it rigidly attached, like it is, makes it a bear putting on larger and heavier off-board bottles (you can't adjust where the 1st stage sits so you can't adjust where the tank sit relative to the canister), but Miflex is helping with that. I'm setting up OMS steel 45s with the valves head-up and moving the weight of the bottles down, again like a set of doubles, to get some of the weight lower. The Miflex allows me to use the HH manifold and run the LP hose to the valves.

It really boils down to what you want to do with your rebreather. If you want to do deep diving with HE crunching deco computers, that read your real-time PO2, etc., then you want the HH electronics - Meg or HH (It's cheaper buying a HH to get that).

If you want a BOV, then either will work (It's cheaper buying a HH to get that).

If you want a radial scrubber, then either will work (Meg's got them in production now) (It's cheaper buying a HH to get that).

I have modified the DIVA mount, and you can see pictures under "DIVA Sun Shade." The DIVA should come with sun shades standard ($2.00).

That's all I can think of now. I'm glad I sold my Meg to someone who appreciates it and the modifications made to it, and I'm equally glad I have the HH.

Bill

[MarcLaukien]

Quote: (Originally Posted by Yessic)

Has anyone here actually dove the HH? did you like it or dislike it? Is it better or worse than other units that you have dove?

I have one of the first units, and I love the HH. I can't really compare it to the Meg, since I never dove one. I posted a comparison with the Optima here.

[Terry]

I have a HH. I am a former Inspo dirver.
I do like the HH electronics, but there are a few things I dont like:

The HH does not have an ability to calibrate on anything other than 100% O2. Normally this is not a problem, but once you go Truk or Palau they usually have between 90 and 95%. The HH will not calibrate, will not accept when the cell get less than about 45 Milivolts (not sure of the exact number). When calibrating, the unit assumes you have 100% and that is the only option.


You do have to maintain setpoints on both handset in order for the deco to be accurate. I just leave the secondary on high setpoint.

The scrubber is big and heavy, and is aluminum. Although it has an electrostatic coating, it is subject to scratches, gouges, and reacts badly when in intimate contact with Sorb. Should have been made of delrin.

The ADV is not agressive enough. It does not supply air as quickly as I wish it would.

The hose routings could have been thought through a little more. I cut apart the back of CL cordura to streamline the hose routings. Alot better now, but I had to do some surgery.


The metal sub tank mounts need to have a lock out for the button. I had a dive boat rack press in the button and release the tank. On another dive, the dive boat rack hit the button and the tank fell out of the mount when I jumped in.

One of the metal sub mounts need to be reversed. They need to be mirror images of each other, are identical instead.


With all this said, I still am very happy with my Hammerhead. If I could change just one thing, I wish it were lighter / pack smaller.
The unit is solid, robust, can take a beating, and can be relied upon. For me, it is a perfect Rebreather for my use and I would buy it again.

Terry

[heyydude]

Hi Terry,

Glad to hear you like your new toy.

As for the Delrin housing: The demo unit is in our shop, and was at DEMA - the reason we stuck with Aluminum was an internal discussion between our engineers about whether or not Delrin would warp if someone left their unit sitting on the passenger seat of their car in the Florida sun.

Rather than forging forward, we elected to do some more research and tests before offering this as an option. Aluminum may scratch on the top of a cave, but hey - in my day, a scratched housing was a badge of honor, and I assure you, Delrin ones will scratch too!

We do also have a smaller Scrubber and Housing which was also demo'd at DEMA - it needed to be changed slightly to make it a tad longer to accommodate the MetalSub mounts (the one at DEMA had Tiger Mounts on it).

The new scrubber housings are slightly shorter to allow them to be placed in a suitcase, thanks to input from an end-user (Joe Radomski) - which is my way of saying, we're listening to your comments too.

There are LOTS more updates and cool things coming - and when they've been tested and worked out, we'll make the appropriate announcements, and make them available to everyone who dives a HH CCR.

All the best,

Kevin Juergensen
Juergensen Marine, Inc.