Golem and V4tec comparo...

silent running · 24th December 2006, 04:29

Quote: (Originally Posted by cedricverdier)

Mark and Phi gaves some very detailed explanations on the technical side, so I'll stay on the rebreather diver's side. The main difference between the 2 BOVs for me is at depth. When you use the BOV, it because you NEED it: so it has to be simple to operate and it has to breathe better than just "fine" at depth. So this is a very personal and subjective criteria but I tried both at depth (and I mean "deep"...) and I found the Golem one much better.

Cheers

Thanks Cedric, very helpful info. Did you notice any differnce in the WOB btw the 2? I understand the bore is bigger on the V4...

cedricverdier · 25th December 2006, 06:22

Quote: (Originally Posted by silent running)

Thanks Cedric, very helpful info. Did you notice any differnce in the WOB btw the 2? I understand the bore is bigger on the V4...

Hi,

On the CCR position, the bore size doesn't make any noticeable difference.
On the OC position, there is a real difference in comfort between the 2 regulators.

Cheers

Amarok · 25th December 2006, 08:07

Cedric;
Mat's Meg Golem should be here tomorrow - thanks Jakub. I should have brought more over - Mat also took my Inspo Golem. - Great piece of gear
Cheers

silent running · 25th December 2006, 09:05

Quote: (Originally Posted by cedricverdier)

Hi,

On the CCR position, the bore size doesn't make any noticeable difference.
On the OC position, there is a real difference in comfort between the 2 regulators.

Cheers

Thanks for more great first hand info Cedric...

lof · 4th January 2007, 17:56

Quote: (Originally Posted by alfazulu)

Does the Golem have o-rings against the one-way valves?

The Golem BOV has captured o-rings in the one-way valves. The flow direction is reversible, as the BOV was designed to be universal for any rebreather. But the one-way valves are set in the BOV once and not removed unless for maintenance. Once you set the flow on your kit you should be OK.
Your predive check would catch any mistake anyway, right

silent running · 5th January 2007, 01:16

Quote: (Originally Posted by lof)

The Golem BOV has captured o-rings in the one-way valves. The flow direction is reversible, as the BOV was designed to be universal for any rebreather. But the one-way valves are set in the BOV once and not removed unless for maintenance. Once you set the flow on your kit you should be OK.
Your predive check would catch any mistake anyway, right

Thanks for the info Jakub. I notice that you have the Prism listed in the Rebreather's you dive. How you tried your BOV on it? How compatible is it? Hose size, barrel volume/bore, weight compared to stock weighted mouth pc... etc? -Andy

lof · 5th January 2007, 13:31

I do not have that unit anymore. So I can't look at it. If I remember correctly someone bought the Threaded-Trapezoid version for Prism not long ago. Maybe they are here and can give a feedback.
I still have some bits and pieces of it with hoses so I might be able to check it for you.
All you really need is a hose with a cuff diameter ~40mm.
Then you just clamp your existing hose to our BOV nut assembly.

Note: I would never use zip-ties to attach hoses. Zip-ties have tendency to self-tighten and can cut through the hose, also they can break off suddenly. We use SS hose clamps with layer otr two of electrical tape beneath to protect the hose.

silent running · 11th January 2007, 09:16

Quote: (Originally Posted by lof)

I do not have that unit anymore. So I can't look at it. If I remember correctly someone bought the Threaded-Trapezoid version for Prism not long ago. Maybe they are here and can give a feedback.
I still have some bits and pieces of it with hoses so I might be able to check it for you.
All you really need is a hose with a cuff diameter ~40mm.
Then you just clamp your existing hose to our BOV nut assembly.

Note: I would never use zip-ties to attach hoses. Zip-ties have tendency to self-tighten and can cut through the hose, also they can break off suddenly. We use SS hose clamps with layer otr two of electrical tape beneath to protect the hose.

Thanks very much for the info Jakub. And I agree about the ss hose clamps, that's the way to go if you don't have an Inspo. But another question: Do you believe there is any significant hydrostatic/performance difference btw a 2nd stage mounted as yours is on the bottom of the unit as compared to one mounted on the front of the BOV like the KISS unit?

lof · 11th January 2007, 15:18

I am sure that there is some performance difference between 2nd stage mounted up front and at the bottom. The bottom one will breathe easier, but would have more tendency to freeflow on the surface (we put stronger spring in there to prevent that). Our BOV was built for scootering, you do not want front mounted 2nd stage if you are zooming along at high speeds

Also, less leverage on your jaw when mounted at the bottom.

silent running · 12th January 2007, 02:17

Quote: (Originally Posted by lof)

I am sure that there is some performance difference between 2nd stage mounted up front and at the bottom. The bottom one will breathe easier, but would have more tendency to freeflow on the surface (we put stronger spring in there to prevent that). Our BOV was built for scootering, you do not want front mounted 2nd stage if you are zooming along at high speeds

Also, less leverage on your jaw when mounted at the bottom.

Yes, bottom mounting of the 2nd stage seems the way to go for several reasons. But do you recomend a flow stop? I'm thinking it's good if you find your self mucking about on the surface or have to surface swim. And what is the weight of the unit? 'The Prism DSV is weighted to eleviate the need for hose weights, so the BOV must be the same or heavier. I couldn't find the weight on the Golem on the site... Thanks for all the info Jakub, -Andy

24th December 2006, 04:29	#11 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Golem and V4tec comparo... Quote: (Originally Posted by cedricverdier) Mark and Phi gaves some very detailed explanations on the technical side, so I'll stay on the rebreather diver's side. The main difference between the 2 BOVs for me is at depth. When you use the BOV, it because you NEED it: so it has to be simple to operate and it has to breathe better than just "fine" at depth. So this is a very personal and subjective criteria but I tried both at depth (and I mean "deep"...) and I found the Golem one much better. Cheers Thanks Cedric, very helpful info. Did you notice any differnce in the WOB btw the 2? I understand the bore is bigger on the V4...
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25th December 2006, 06:22	#12 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 497	Re: Golem and V4tec comparo... Quote: (Originally Posted by silent running) Thanks Cedric, very helpful info. Did you notice any differnce in the WOB btw the 2? I understand the bore is bigger on the V4... Hi, On the CCR position, the bore size doesn't make any noticeable difference. On the OC position, there is a real difference in comfort between the 2 regulators. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
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25th December 2006, 08:07	#13 (permalink)
Amarok New Member Current Rebreather/s: Inspiration Vision Megalodon Other Rebreather/s: Evolution Join Date: Mar 2006 Location: Alberta Canada Posts: 72	Re: Golem and V4tec comparo... Cedric; Mat's Meg Golem should be here tomorrow - thanks Jakub. I should have brought more over - Mat also took my Inspo Golem. - Great piece of gear Cheers
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25th December 2006, 09:05	#14 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Golem and V4tec comparo... Quote: (Originally Posted by cedricverdier) Hi, On the CCR position, the bore size doesn't make any noticeable difference. On the OC position, there is a real difference in comfort between the 2 regulators. Cheers Thanks for more great first hand info Cedric...
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4th January 2007, 17:56	#15 (permalink)
lof RebreatherWorld Sponsor Current Rebreather/s: Megalodon Prism Topaz Sport Kiss Classic Kiss MK 15.X Other CCR RB80 / Clone Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Other SCR Home Build Join Date: Jun 2005 Location: USA Posts: 479	Re: Golem and V4tec comparo... Quote: (Originally Posted by alfazulu) Does the Golem have o-rings against the one-way valves? The Golem BOV has captured o-rings in the one-way valves. The flow direction is reversible, as the BOV was designed to be universal for any rebreather. But the one-way valves are set in the BOV once and not removed unless for maintenance. Once you set the flow on your kit you should be OK. Your predive check would catch any mistake anyway, right __________________ Jakub Golem Gear ShopKeeper www.golemgear.com
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5th January 2007, 01:16	#16 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Golem and V4tec comparo... Quote: (Originally Posted by lof) The Golem BOV has captured o-rings in the one-way valves. The flow direction is reversible, as the BOV was designed to be universal for any rebreather. But the one-way valves are set in the BOV once and not removed unless for maintenance. Once you set the flow on your kit you should be OK. Your predive check would catch any mistake anyway, right Thanks for the info Jakub. I notice that you have the Prism listed in the Rebreather's you dive. How you tried your BOV on it? How compatible is it? Hose size, barrel volume/bore, weight compared to stock weighted mouth pc... etc? -Andy
(Offline)

5th January 2007, 13:31	#17 (permalink)
lof RebreatherWorld Sponsor Current Rebreather/s: Megalodon Prism Topaz Sport Kiss Classic Kiss MK 15.X Other CCR RB80 / Clone Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Other SCR Home Build Join Date: Jun 2005 Location: USA Posts: 479	Re: Golem and V4tec comparo... I do not have that unit anymore. So I can't look at it. If I remember correctly someone bought the Threaded-Trapezoid version for Prism not long ago. Maybe they are here and can give a feedback. I still have some bits and pieces of it with hoses so I might be able to check it for you. All you really need is a hose with a cuff diameter ~40mm. Then you just clamp your existing hose to our BOV nut assembly. Note: I would never use zip-ties to attach hoses. Zip-ties have tendency to self-tighten and can cut through the hose, also they can break off suddenly. We use SS hose clamps with layer otr two of electrical tape beneath to protect the hose. __________________ Jakub Golem Gear ShopKeeper www.golemgear.com
(Offline)

11th January 2007, 09:16	#18 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Golem and V4tec comparo... Quote: (Originally Posted by lof) I do not have that unit anymore. So I can't look at it. If I remember correctly someone bought the Threaded-Trapezoid version for Prism not long ago. Maybe they are here and can give a feedback. I still have some bits and pieces of it with hoses so I might be able to check it for you. All you really need is a hose with a cuff diameter ~40mm. Then you just clamp your existing hose to our BOV nut assembly. Note: I would never use zip-ties to attach hoses. Zip-ties have tendency to self-tighten and can cut through the hose, also they can break off suddenly. We use SS hose clamps with layer otr two of electrical tape beneath to protect the hose. Thanks very much for the info Jakub. And I agree about the ss hose clamps, that's the way to go if you don't have an Inspo. But another question: Do you believe there is any significant hydrostatic/performance difference btw a 2nd stage mounted as yours is on the bottom of the unit as compared to one mounted on the front of the BOV like the KISS unit?
(Offline)

11th January 2007, 15:18	#19 (permalink)
lof RebreatherWorld Sponsor Current Rebreather/s: Megalodon Prism Topaz Sport Kiss Classic Kiss MK 15.X Other CCR RB80 / Clone Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Other SCR Home Build Join Date: Jun 2005 Location: USA Posts: 479	Re: Golem and V4tec comparo... I am sure that there is some performance difference between 2nd stage mounted up front and at the bottom. The bottom one will breathe easier, but would have more tendency to freeflow on the surface (we put stronger spring in there to prevent that). Our BOV was built for scootering, you do not want front mounted 2nd stage if you are zooming along at high speeds Also, less leverage on your jaw when mounted at the bottom. __________________ Jakub Golem Gear ShopKeeper www.golemgear.com
(Offline)

12th January 2007, 02:17	#20 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Golem and V4tec comparo... Quote: (Originally Posted by lof) I am sure that there is some performance difference between 2nd stage mounted up front and at the bottom. The bottom one will breathe easier, but would have more tendency to freeflow on the surface (we put stronger spring in there to prevent that). Our BOV was built for scootering, you do not want front mounted 2nd stage if you are zooming along at high speeds Also, less leverage on your jaw when mounted at the bottom. Yes, bottom mounting of the 2nd stage seems the way to go for several reasons. But do you recomend a flow stop? I'm thinking it's good if you find your self mucking about on the surface or have to surface swim. And what is the weight of the unit? 'The Prism DSV is weighted to eleviate the need for hose weights, so the BOV must be the same or heavier. I couldn't find the weight on the Golem on the site... Thanks for all the info Jakub, -Andy
(Offline)

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