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Almost any reg will freeze up after free flowing for some time. I occasionally drain my 120 deco mix while at my 20 foot stop so I don't have to listen to it drain in my garage, and that reg always freezes up, and it never has a problem under normal usage. The water temp here right now is 41f. At 02:10 AM 1/8/99 +0100, you wrote: > > >-That is odd and it certainly does not correspond to the experience i have >with the reg. One of my dive buddy's used to have a Scubapro >G250/mk20 reg and it freeflowed all the time. He tried all kind of tricks >with it like detuning it and even went so far as to apply silicon grease >on the internal parts of the 2nd stage in a desperate attempt to prevent >ice from forming. It always worked well to a certain depth of about >30-35m and then it started to freeflow. He finally got pissed off and >bought an Apeks reg. I have also seen loads of scubapros freeflow and >have had a lot of people telling me it sucks for cold water. I should >mention that i have never used a scubapro myself. My experience with it >comes from seeing other people using it and people telling me it sucks. >We have in fact several student kits equipped with scubapro regs >that we rent out to our OW students. I have seen scubapros freeflow even >in the summertime when the water temp is pretty high and in the >winter they freeflow all the time. One of our instructors told me that he >had a scubapro freeflow on him in the 20c pool. It sounds >unbelievable but he insists it is the truth. He was in the process of >showing his OW students how to breathe from a freeflowing regulator. He >did this by pressing down the purge but when he did let goo of the purge >button the reg still freeflowed. He could not stop the freeflow so he >surfaced and to his amacement he found a big block of ice on the 1st >stage. There are witnesses to the insident and i do not think he would >lie about this. I laughed for a week when i herd the story. At least our >students get top training on freeflowing regs :-) But we are changing >them out now. We have a saying about "Suckapro" as we call them. They >will start freeflowing in the trunk of your car on the way to the >dive site. You know the Scubapro slogan "deep down you want the best". >When i see an advertisement with that slogan it always makes >me laugh. > >But i have to admit that you are not the first that claims good cold water >performance from Scubapro regs. I do not think you are lying either >because i have seen people diving both deep and cold with out any >problems. I cant figure out why they freeflow on some and on others not >though. But that seems to bee the case. I can certainly see that they can >freeze eisier on beginners like our OW students because they are all >enormous hovers. They sometimes sucks so badly on that hose that you are >worried about the cylinder imploding from the negative >pressure. I have to tell you that we once had a student that hovered so >badly that when watching his bubbles on the surface you thought a >depth charge went off!! That was amazing! When he got out of the water i >checked his gauge because i wanted to calculate his RMV. This >could bee a new record i thought and it was indeed. He had an RMV of over >70 liter (do not know how much that is in cuft ) per >minute!!! This most bee a new world record, i mean even if the reg DID >freeflow he still would not bee able to empty that cylinder so >quickly. This is totally off topic but i thought that it might amuse some >of the readers. >On the outer hand i have seen the reg freeflow on very experienced divers >such as my dive buddy i mentioned earlier. One other explanation >would bee bad air and water in the tanks. But that is not the case with us >because we have a very good set of filters on our compressor and >being very anal we send in cylinders for analysation every 3 month. Maybe >Scubapro have difference in quality between reg to reg. I do not >know. > >Best, >Ingemar > >Peter Fjelsten wrote: > >> Den 17:07 07-01-99 skrev Ingemar Lundgren noget i som godt kunne ligne >> ... >> >Some of the regulators on this test has to few dives on them to give a >> >> >good picture of the reality. >> >What i have found though from my experience and divers i have talked >> >is that there seems to bee a few regulators which are better than >> >others for cold water. Apeks TX40-50 works very good. We have made >> >thousands of dives with it and only 2 or 3 freeflows to date. Poseidon >> >regulators also works great for cold water but they have other >> problems >such as among other things a poor breathing 2nd stage. All >> the >Scubapro regs i have tested worked very poor in cold water. The >> worst >being the R-190 and G-250 together with the mk-20 first stage. >> At least >50% chance of freeflow. The problem seems to bee with the >> first stage >because the G-250 works good together with a Poseidon >> first stage. >Scubapro might have solved the cold water problem with >> the new mk18. I >have herd promising reports from divers involved in >> testing it. >> >> Sorry to disagree, Ingemar, but I have owned a Mk20/G250 combo for >> almost a year now and dived with it in our water (as cold as Sweden). I >> have had NO freeflows of any kind. I has be slightly detuned. >> >> The Apekses have given me no problems at all. >> >> Hope this helps,,, >> >> Hilsen (Best regards), >> >> Peter Fjelsten >> ___________________________________ >> TekDykningsWeb 3.0 >> http://welcome.to/pf > > > >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > ------------------------------------ Kevin Connell <kevin@nw*.co*> NW Labor Systems http://www.nwls.com "I suppose you want a user interface with that.." ------------------------------------- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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