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Showing results for tags 'gicleur'.
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I have been putting off sorting out the temps in my group for a while. After heating up the group is at well above 100deg and so is the entire HX. To get it anywhere near the right temp I have to heavily flush it, enough to remove over temp water AND to bring the thermal mass of the group down in temp. I put a topic up about this before and tried some of DaveC's suggestions in flushing methods but to no avail. I had two ideas of how to lower the temp. One was that when I replaced the water level probe I installed a new one that was too long/too short. I tested this the other day and letting the boiler fill up a bit more or be more empty had no affect. I guess this makes sense in terms of the water being as hot as the steam so the HX is surrounded by the same temp regardless. Please correct me if I'm wrong here. My other thought is that my Gicleur is too big, this machine was originally sold to a shop and plumbed in. Sure enough the hole is roughly 1.5mm. Considering most seem to be in the .5-.8 range this seems huge. But reading on the web (mostly HB) suggests the Gicleur mostly controls pressure ramp up and not temperature.... so how true is this. I have already ordered a .5mm Gic to experiment with but thought I would ask the question as well to see if its going to help.
Looking back through old threads there's a few folk who've fitted these to their E61 machines. I fancy fiddling with the Brewtus a bit more and this seems liek a fairly simple mod to try out. Anyone out there have a spare one they'd fancy selling me? Cheers!
My small collection of 0.5mm E61 gicleurs has now arrived from the US (only 6 days door-to-door Spence!). I've swapped mine, in the Duetto, already (5 min job) and taken a few photos along the way if anyone wants help (but it really is very simple - 22mm socket and 7mm socket as well as a pair of tweezers come in useful!). After my initial shock at the postage costs from Espresso Parts, coupled with the fact that I bought every 0.5mm gicleur that Espresso Parts had in stock at the time (not that many!) - the price has dropped to about £2 a piece plus postage. I reckon they'll sellotape to a piece of card and pop in a sturdy envelope quite easily - but will still be a Large Letter (90p) due to the 7mm width of the gicleur. So - £2 a piece plus £1 p&p to the UK. I've got 10 of them for sale. Shades
Can anyone enlighten me please on the effect of exchanging a 'standard' gicleur for a finer one? I believe that E61 machines normally come fitted with either a 0.6 or 0.8mm gicleur, but that 0.5mm is considered to be better. In what way is it better, and if it is indeed better, why aren't machines supplied fitted with a smaller gicleur in the first place? I am aware that the gicleur influences the flow rate of the brew water through the group but what in practical terms of pulling a shot would be the effect of reducing it? Machine is Quick Mill Verona... I'd be interested to know just what gicleur size is fitted as supplied. Thanks in anticipation, Tony.