ScubaPro Mk17/G250V questions

[AbyssalPlains]

Hi all!

1) I read that you can disassemble the cover of this reg under water to remove debris between diaphragm and cover, but I want to confirm if that is correct.

2) can you easily convert the Mk17 from Yoke to DIN?

3) Some people complained about hose routing problems with the Mk17. I already have that reg on my pony bottle and used it once with doubles. Can't remember any hose routing problems. What do they mean by that?

Thanks!

 

[BlueWaterDiving]

1) I read that you can disassemble the cover of this reg under water to remove debris between diaphragm and cover, but I want to confirm if that is correct.

I you look at the reg by the hose you will see a black pin. You need to remove that before you try to trun it.

can you easily convert the Mk17 from Yoke to DIN?

Yes it can be done if you have the right tools and know the right way to put it on. your SP dealer can do it.

) Some people complained about hose routing problems with the Mk17. I already have that reg on my pony bottle and used it once with doubles. Can't remember any hose routing problems. What do they mean by that?

This is up to the person using the reg. I don't use this one I like the MK25 .

I hope this helps you out.

 

[a22shady]

can you easily convert the Mk17 from Yoke to DIN?

Yes it can I have the same setup took it to my LDS paid 50 ish for the part they swaped it out for free.

As far as hose routing I have had no issues

 

[Zung]

1) Yes and No: there's a little pin that'd be quite difficult to remove underwater. But since that pin serves no other purpose than to align the cover, there's no good reason why you wouldn't pre-remove it once & for all; then you can remove the cover whenever you want. But why would anyone want to do that?

2) Yes and No: I'm not familiar with the diaphragm types, but I assume they use the same standard parts. It's doable, but not easy: you have to get the DIN kit, remove the yoke with a special 1" low-profile nut, install the kit with an extra-long 6mm hex (Allen) key and, preferably use a torque wrench to tighten it.

3) Yes and no: I have used both swivel and non-swivel 1st and never have any complain with either, but I guess some people are fussier than others.

And, btw, I love my jacket BC

Edit: 1) I actually saw it happens last summer: the instructor who was certifying my #2 son dived in, went right out, cursed like hell and proceeded to wash away all the sand that was in his reg. But he did it on the surface; I think he has an Apeks.

 

[DA Aquamaster]

I prefer the Mk 17 hose routing over the MK 25 hose routing for doubles. For singles, the Mk 25 is a bit cleaner for most people.

Switching from yoke to DIN takes about a minute once the tools are ready.

 

[AbyssalPlains]

1) then you can remove the cover whenever you want. But why would anyone want to do that?

Hey, thank you for your insights! The reason for removing the cover under water is in the case of overhead diving where you can't make a direct ascent to the surface. I have not experienced this myself and am still learning about these things, but apparently it has happened that debris caught between diaphragm and cover caused the reg to be stuck in the open position. Being able to diasassemble the reg under water will allow you to fix the issue and prevent you from losing your gas. I read that a removable cover is mandatory in cave diving. Not that I'm planning on doing that any time soon, but I like having that option in the future.

I love Lake Geneva, by the way. Haven't dived there, but loved swimming in it.

 

[kathydee]

My Mk17 is better for singles routing and my Mk 25's better for doubles routing. Love my S600 much better than G250V's for a primary.

Yoke to Din was easy.

 

[Zung]

... a removable cover is mandatory in cave diving...

Oh, cave diving. I got lost once, scared me to death, promised never do it again... and declined the opportunity to visit the Cosquer cave in France, where paintings from 10-20'000 years ago were found:depressed:

 

[Blue Sparkle]

My Mk17 is better for singles routing and my Mk 25's better for doubles routing. Love my S600 much better than G250V's for a primary.

Hi kathydee,

I'm in "pre-shopping" mode for regs, and the G250v is one that's on my list; can you explain why you like the S600 better? Who knows, maybe I would feel the same way if I knew what you do

Thanks,

B.

 

[eelpout]

Blue Sparkle,

The main advantage of the G250V over the S600 is that the G250V was designed to perform in colder waters better than the S600. They changed the material for the barrel, and the moveable orfice to help in preventing icing up of the 2nd stage. I hve used a G250, G250 HP, and presently a G250V. I like it the G250V because it goes back to the simplicity of the original G250 with just enough tweeking to make it better. My wife has diving with the S600 since it came out. She loves it ! She does not dive in cold water (below 40 degrees F) anymore. I do and I actually use 2 MK25 first stages and 2 G250V second stages for my back gas. I have never had a problem in cold deep (200 ft +) with my set up.

I think if water temp is not an issue and size of th 2nd stage (smaller) is to your liking then go wiht the S600.

As a techinician I do not like any of the SP 2nd stages that have the micro adjustment option on the left side. It adds more work for very little benefit.

Just my 2 cents,
Jim