What's the difference between the Slayer paddle and La Marzocco paddle?

My understanding is that there is only one difference. With the Slayer you can set the actual
preinfusion pressure by taking the top off the machine and turning a small valve that is next to that group heads brew boiler. With the La Marzocco, the preinfusion pressure is preset by your water main pressure. It should be possible to put a pressure regulator on the mains pressure to achieve the same result with the La Marzocco. Not only that but the regulator could be easily accessible without having to take the top off the machine.

Has anyone have any experience  with these paddle groups? 

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Bryan Wray said:
I'm sure there is a chance that you worked on machines that didn't drop 3 bars when the second group started up, but the pressure did have a substantial drop, whether you noticed it or not.

-bry

There *are* ways to plumb three different motors so that use on one does NOT drop the available pressure on the other two. Sure, it's a bit more complicated (and expensive) but if you're already willing to pay for a Slayer or a Hydra, and the extra pumps...
Sure there are ways to modify existing stock commercial machines which have one pump for all groups to instead have separate pumps for each group. Bry's point addressed and post stated specficially referencing the preponderance of machines out there: standard configuration of one and only one pump regardless the number of groups.

Chris said:
Bryan Wray said:
I'm sure there is a chance that you worked on machines that didn't drop 3 bars when the second group started up, but the pressure did have a substantial drop, whether you noticed it or not.

-bry

There *are* ways to plumb three different motors so that use on one does NOT drop the available pressure on the other two. Sure, it's a bit more complicated (and expensive) but if you're already willing to pay for a Slayer or a Hydra, and the extra pumps...
If I was to ask my boss for a second pump and the plumbing to go with it, he'd look at me like I'd flipped out.

It took 5 years to get new burrs in the Mahlkonig.

For many of us on here, we work with what we're given to work with. Simple as that.
miKe mcKoffee aka Mike McGinness said:
Bry's point addressed and post stated specficially referencing the preponderance of machines out there: standard configuration of one and only one pump regardless the number of groups.

He referenced theoretical machines in the respondent's past experience and then assigned specific attributes to them without allowing of the possibility of a machine with a pump and an accumulator per group. I simply pointed out that while the chances are good, that isn't really an assumption that can be guaranteed correct. OTOH, if I were going to go to the trouble of a pump per group, not adding an accumulator for each pump would be sort of a wasted effort.
Again, I'm betting that Bry's assumption was correct, but I wouldn't put the farm on it.

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