Recent content by Chris Kennedy

I mount it on dil tank with a velcro strap ,works well

As Tony said use normally compensated first stage ,as you descend you will normally adjust the flow rate to maintain the desired ppo2 which means you will decrease flow the deeper you go. You must remember on ascent to increase the flow correspondingly.

The best valves to use are the Swagelok SS2 Series low flow valves . I have produced around 30 over the last couple of years for mccr users . Normally fully closed they give you under .1 ltr min as Swagelok recommends that you do not fully close as you can damage seat. Needle taper is .29 to.32...

Dolphin Mod I now believe I have the Dolphin to a great little mccr unit.I was not happy with the cell holder so I have designed a unit which I think gives you best use of the bag mount. I machined a mounting ring which fits into bag in place of pport . It is not as tall as the original Drager...

My Dolphin has sat under the bench for a couple of years gathering dust. I had sold off PPO2 meters, V4Tec tank mounts, Techme cell holder. Basically had loop,scrubber, lungs V4Tec backplate adapter and shell which I never got around to putting on ebay. All in all it seemed less effort to put it...

I built a radial for my GAF and I can notice a bit of a difference in WOB do not think it is 25%. I find radial no harder to pack than Axial and use same procedures . I have never had any settling in either. As my unit is built on a KISS can the axial pack holds 2.5kg and radial just a tab under...

Coming along nicely,nice work

I cannot fathom the fact that people tie time to ability. I learned to dive using BSAC system over forty years ago when climbing the tree was a long process. I qualified First Class and advanced Instructor over thirty years ago and in those days it was no mean feat. Boys times have changed...

WFO half of machining work is thinking outside the box on how the job can be done.My latest head can be done on a lathe ,I just happen to have a mill so I cut the cell pocket and the 40 degree angles on it. I could have fitted a L plate on the tool post mount which enables me to mount the head...

Whats out there are a lot of good units made by people like myself who can build on par to the commercial suppliers and do so because they enjoy the challenge. The GAF as a manual control unit is as good as a Pelagian ,KISS and rEvo II. I have owned both a Pelagian and a rEvo II and neither was...

After completing the lathe work on head blank I cut the cell cavity to take three cells. The center of the channel is found and Delrin block is bolted to table through the center hole . Two clamping blocks are bolted to table on an angle and against the head so when you loosen the center bolt...

The head does indeed fit a KISS tube. The ADV is based on a R390 Scuba pro second stage which Martin at TecMe makes in various forms and I have used in past .The head blank is cut from a 140mm diam piece of Delrin 100mm long. The first operation is to machine base of head for o'ring groves and...

The GAF has come to the stage in development where it is a good mccr unit within the scope of any home builder with access to a lathe and a mill . The units performance makes it comparable to a KISS or Pelagian and in some aspects it is better. I intend over the next couple of posts to outlay...