BlueDevil
Contributor
The lightest reg for travel by far is a rental reg at your destination. Other than that, I'd be curious to see the weight difference between various regs; I bet it's less than a pound. Hard to believe that would make much difference in luggage, but I guess it's possible.
For life support equipment I do not want to trust hire equipment unless there is absolutely no alternative.
Just as an example of reg weights the Mares Abyss MR22 weighs 1392g (without hose) and the Mikron weighs 830g (with hose). So the weight difference is just over half a kilogram (a little over a pound for those who are still in the dark ages ). This all helps when travelling. The entire weight of the Mikron reg complete is less than the weight of the Abyss 1st stage alone.
As mentioned before my new fins are 200g lighter than my old ones, I have saved 300g by using Miflex hoses on my reg and if I were to take a Mikron reg instead of my Abyss I would save another 500g. So I have a weight saving of 1000g or 1 kg. Thats about 2lb 4oz in old fashioned units.
(Note that I didn't buy new fins just to save weight - my old ones developed a crack and I bought the new ones without knowing what the weight comparison was with my old ones)
Those who have not travelled on small aircraft with dive gear may not realize just how important it is to consider the weight of everything you take. We go to the extent of things like buying the smallest tube of toothpaste available and then using half of it before we go on the trip - this means we have just enough for the trip without carrying the extra weight of a large full tube. We do much the same for things such as shampoo, sun cream etc.