Rancilio Silvia - No temperature surfing worst case

This shows a worst case scenario with shot extraction on a Silvia.

Blogpost: http://coffeemachineman.wordpress.com/2008/09/03/rancilio-silvia-pid-temperat...

The shot is purposefully pulled at the bottom end of the boiler temperature cycle resulting in a sour/under extracted shot. Note PID is disabled, and only working as a fancy temperature gauge.

Category:

Howto & Style

Tags:

• rancilio
• silvia
• pid
• coffee
• machine

[yohoke]

What brand/kind of cup are those?..cool.

[charliem169]

@yohoke They're Duralex Picardie glasses.

[dmleventhal]

So at the beginning of your shot you're at about 202F (which I thought was ideal). At the end of your shot, you're at about 189 F. Of course, that's a wide spread, but where are the issues with this shot? Seems pretty good to me. Your temp surf vid shows you starting your shot at 217F, which seems too hot to me.

Also, can you explain the two pitchers? Thanks!

[charliem169]

@dmleventhal The temperature readout is from the top of the boiler. Brew water temperature at the group head will generally be less than this. The PID manufacturers factor in an offset of around 10C (the default setpoint is about 105C), so if you want a brew temp of 95C, aim for a temperature at the top of the boiler of 105C.

[gblan]

Yeah but at least he isn't a "feashman" in the spelling department.

[snedie69er]

@gblan

ami doin et rite?

[makkakman]

@crumbinator its the beans.... fresh roasted beans

[jajeelyb]

wow,,, u r really a feashman in the latte art

[dasuberalles]

Mate unreal work. I just got my silvia today, and the first thing that impressed me was the steam.. so powerfull!

[crumbinator]

Surprising amount of crema for such a short pull.