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Thread: 58mm or 50mm+ portafilters

  1. #1
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    58mm or 50mm+ portafilters

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Can anyone tell me the fors and against for either of these? I`m of the opinion that 58mm must be the go but have nothing to base that except that[ch8217]s what commercial machines use. But i guess that if a smaller one made of brass/chrome must be better than the lightweight aluminium as far as heat retention goes.
    Robert :)




  2. #2
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    Re: 58mm or 50mm+ portafilters

    This could get interesting *;)

    Domestic machines use all sorts of sizes from 45mm to 58mm
    Commercial machines use 54mm to 58 mm, havnt seen a smaller one but I will no doubt be corrected *::)

    Channelling issues smaller diameter PFs are easier to get close to level than the more open 58mm ones. So distribution and level tamps are less of a worry factor on smaller ones.

    There may well be a reason some of the "modenr toy" machines from Krups, Breville Aldi *:o use smaller ones *is a cost and a scale thing. 58mm on a small machine would look wierd. Ignore them as most are ordinary to rubbish anyway.

    Shot Quality is a consideration, it has been mooted in some circles that smaller portafilters give a sweeter result, this is a whole can of worms and worthy of its own thread I reckon. Della Corte and GS3s are some current examples of 54 or 55mm PFs I think and are some of the best machines in the world.

    Some of the tiny diameter PFs are on 50-60s lever machines and were designed for smaller shot sizes than the generally acepted commercial volumes.

    Why 58 and not 55 or 60 or ??? I suspect this "standard" goes back to the 50s or early 60s and has become a defacto standard. And I suspect some manufacturers have got into a rut of sorts rather than try new things (flame suit is on).

    Apart from that I have been a happy user and owner of 51, 53 and 55mm PFs *8-)

  3. #3
    TC
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    Re: 58mm or 50mm+ portafilters

    Quote Originally Posted by 3334303F373D28383F36510 link=1267596987/1#1 date=1267603347
    This could get interesting *;)

    Domestic machines use all sorts of sizes from 45mm to 58mm
    Commercial machines use 54mm to 58 mm, havnt seen a smaller one but I will no doubt be corrected *::)

    Channelling issues smaller diameter PFs are easier to get close to level than the more open 58mm ones. So distribution and level tamps are less of a worry factor on smaller ones.

    There may well be a reason some of the "modenr toy" machines from Krups, Breville Aldi *:o use smaller ones *is a cost and a scale thing. 58mm on a small machine would look wierd. Ignore them as most are ordinary to rubbish anyway.

    Shot Quality is a consideration, it has been mooted in some circles that smaller portafilters give a sweeter result, this is a whole can of worms and worthy of its own thread I reckon. Della Corte and GS3s are some current examples of 54 or 55mm PFs I think and are some of the best machines in the world.

    Some of the tiny diameter PFs are on 50-60s lever machines and were designed for smaller shot sizes than the generally acepted commercial volumes.

    Why 58 and not 55 or 60 or ??? I suspect this "standard" goes back to the 50s or early 60s and has become a defacto standard. And I suspect some manufacturers have got into a rut of sorts rather than try new things (flame suit is on).

    Apart from that I have been a happy user and owner of 51, 53 and 55mm PFs *8-)
    Great points and info bf,

    Commercial LaSpaziale are 53mm and the GS/3 uses standard 58mm...

    Chris

  4. #4
    Caffeine Junky
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    Re: 58mm or 50mm+ portafilters

    Behmor Brazen - $249 - Free Freight
    One advantage of having a machine with a standard commercial 58mm group is that spare parts and accessories are usually easy to come by e.g. gasket, pressure gauge, bottomless portafilter, basket



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