babar:
I thought SP had a pollicy where they built al there regs to be retrofittable for new mods.
Babar
SP does not have a policy to make ALL their regs retrofittable to new models, but they have traditionally tried incorporate a more evolutionary design approach where the internal parts of new designs can be retrofitted into older designs.
For example a late 60's vintage "Adjustable" second stage can be upgraded to the latest "Balanced Adjustable" configuration which utilizes the same S-wing poppet assembly as the curretn G250 and S600. So after 35 years, the "Adjustable" second stage can not only be servviced but can offer performance that is miuch improved since it was built and is on par with current SP second stages.
Same with the Mk 10. Older Mk 10's can be upgraded both externally and internally. The Mk 10 was upgraded to use concave seats to improve flow rate and this improvement is incorporated into all Mk 10's that come in for annual service. The Mk 10 PLus was developed to use a higher flow piston in addition to the concave seat and any Mk 10 can be upgraded to MK 10 Plus status for very little money.
Given a choice between buying Dacor/Mares or Scubapro, there is no question which is the smarter and safer way to go if you plan on hanging around the sport for any lenght of time.
iain/hsm:
SCUBAPRO has a policy to fix, maybe because they still use the same old internals!!
Well you have managed to get this exactly 180 degrees wrong. SP has a policy to fix as they make an effort to be able to use NEW internal designs in their old regulators.
You are also implying that SP is old/inferior tech. In terms of ease of breathing and flow rate, an SP reg would bury any reg of comparable cost and vintage. SP's "old" designs are some of the most prolific, copied and imitated in the dive industry. That does not support the implication you are making.
iain/hsm:
Come off it AQUALUNG twin hose!!!! these parts are over a quarter of a century old now, time to move on and let them take pride and place in diving history collections.
You ever used a double hose reg? They do offer some unique advantages. The US Navy uses the Mentor as a means to familiarize diver with twin hose configuration prior to training themon rebreathers. Photographers still love having the bubbles behind them, particularly for macro photography.
If you have not used one, I am unclear on just how you formed your critical opinion and why I should give any weight to it.