Quote: (Originally Posted by
RonMicjan)

The chances of both me being distracted, AND the electronics failing at the same time are pretty low, considering my "goal" is to catch it prior to it wanting to fire automatically.
Running manual is an ISC recommendation, Leon is the ONLY IT on the MEG and that is what he teaches, so expect Meg divers to follow that moreso than others. There are not too many guys who have been diving CCR as long as leon, so Im inclined to go with his training.
Ron - it's the logic you are expousing that doesn't make sense to me.
Let's consider that there is a 1 in 100 chance (pick any number) of the electronics failing on a dive, let's consider what happenes to each of us when the electronics fail.
Me - the HUD flashes / goes out / locks solid. I think 'Hmmm, let's look at the secondary and do something'
You - you're happily running manual so don't notice... until you do your 3 to 5 times per dive forgetting routine where you are trusting the unit to cover for you. At which point nothing alerts you (you're not checking your handsets remember) so you're now betting that you'll notice the problem before you go hypoxic - and this is while you are in one of your 3 to 5 'forgetting episodes'.
I beleive that both of us will be impacted if the electronics fail because of the above. However;
I have been monitoring the electronics and letting the electronics monitor the loop, so will pick an electronics failure fairly quickly.
You have been monitoring the loop and ignoring the electronics, so are likely to take longer to notice an electronics failure.
And I agree that not many people have been diving rebreathers as long as Leon - but Peter Ready and Martin Parker probably have. So two out of three rebreather experts say 'fly electronically'. Majority rules
(although it could be that PR and MP have more mature electronics packages)
Mike