Stove-top bike-pump modification
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- Posts: 3
- Joined: 11 years ago
Hi all,
For picture/video, check out:
I'm new to the homemade espresso world, but after learning to enjoy really good espresso made by others, I realized how dissatisfied I was with my cheap stove-top maker. I did some research and found the ideal temperatures and pressures for espresso, and realized that the stove-top maker was failing miserably on both those fronts (way too hot, far too little pressure).
So, first I got rid of the stove part and attached my own pressure source (a Coke bottle with a bike-pump hookup). Now I can precisely control the temperature & pressure to the degree/psi. All I can say is that it makes an incredible cup of espresso.
Cheers!
Taylor
For picture/video, check out:
I'm new to the homemade espresso world, but after learning to enjoy really good espresso made by others, I realized how dissatisfied I was with my cheap stove-top maker. I did some research and found the ideal temperatures and pressures for espresso, and realized that the stove-top maker was failing miserably on both those fronts (way too hot, far too little pressure).
So, first I got rid of the stove part and attached my own pressure source (a Coke bottle with a bike-pump hookup). Now I can precisely control the temperature & pressure to the degree/psi. All I can say is that it makes an incredible cup of espresso.
Cheers!
Taylor
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- Posts: 330
- Joined: 11 years ago
..I think you are pushing your luck if you are putting 7 bar pressure into that coke bottle !
- TomC
- Team HB
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I think you should be commended for your ingenuity! Especially if it makes a beverage you enjoy. I just hope you're allowing your home roasts to rest before using them.
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- Posts: 3
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I was worried about that initially, but all the sources I could find indicate that Coca-Cola representatives say all their bottles are rated to at least 150 psi (a little more than 10 bar) - an industry standard. There is also evidence that the smaller bottles can hold higher pressure still with some sources saying up to 200+ psi.
Thanks for your concern though!
Thanks for your concern though!
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- Posts: 330
- Joined: 11 years ago
As an "industry " technical guy i can tell you the pressure requirement for those bottles is 6 bar (minimum).
They will hold beyond that , but remember that is for a fresh made , unused, undamaged, bottle.
just be careful, when they let go at that pressure, it can do damage !
They will hold beyond that , but remember that is for a fresh made , unused, undamaged, bottle.
just be careful, when they let go at that pressure, it can do damage !
- Randy G.
- Posts: 5340
- Joined: 17 years ago
Why not use a PID-controlled small, portable electric air pump?
Seriously, trade out the coke bottle for a paintball gun bottle.
Seriously, trade out the coke bottle for a paintball gun bottle.
EspressoMyEspresso.com - 2000-2023 - a good run, its time is done
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- Posts: 383
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Besides your homemade bomb Coke bottle that was already commented on, that is a cool setup!! Cheap and ingenious!
“The powers of a man's mind are proportionate to the quantity of coffee he drinks” - James McKintosh
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- Posts: 15
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Great stuff, love it!
Could you post the exact parts you used, besides the bialetti and coke can?
Could you post the exact parts you used, besides the bialetti and coke can?
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- Posts: 100
- Joined: 11 years ago
Moka pots aren't designed to see 9-10 bar.
Surely, once fatigue sets in you WILL blow that plastic bottle, but I would also be cautious with that moka pot.
You are pressurizing it through the pressure release valve....
Surely that should raise a few yellow or red flags.
Surely, once fatigue sets in you WILL blow that plastic bottle, but I would also be cautious with that moka pot.
You are pressurizing it through the pressure release valve....
Surely that should raise a few yellow or red flags.