i got a new roaster - Phantom 7kg

[Dimal]

I should have added, i charge 6kg (5 and a bit out after moisture loss) regularly and have no issues cooling that, its only if i charge the full 7kg that i have a slight overflow!!

Could maybe fit a "hungry board" to the cooling tray - Mightn't need much if it just overflows...

Mal.

[Lukemc]

Thanks so much for those answers... I'm currently roasting on a 1.5 kg Proaster, and have some very early thoughts on going larger.

Cool! CRA posted on facebook today that they are cleaning up a 5kg and 15kg 2nd hand HG for sale too, might be worth a thought.

[kwantfm]

It's really interesting that your environmental temp rises when you increase fan... my understanding was that if you increase fan then you effectively introduce more room temperature air but also get more convective flow, so environmental temp would drop although rate of roast temp rise might stay the same. That's what happens on the Proaster. I'm wondering if the Phantom has a different fundamental architecture.

[Lukemc]

Who knows! I could be wrong as well!

Maybe there is a an immediate rise then a gradual decline. It could be down to probe placement too.

My ROR spikes if I increase the fan then starts to decline again.

[kwantfm]

Who knows! I could be wrong as well!

Maybe there is a an immediate rise then a gradual decline. It could be down to probe placement too.

My ROR spikes if I increase the fan then starts to decline again.

I'm not saying you're wrong!!! You get what you get... I'm very interested though.

[Lukemc]

I'm not saying you're wrong!!! You get what you get... I'm very interested though.

I’m always concerned when I answer questions as I don’t want to add to the misinformation that floods the net sometimes!!!

I’ll do some further testing tomorrow!

[Lukemc]

It's really interesting that your environmental temp rises when you increase fan... my understanding was that if you increase fan then you effectively introduce more room temperature air but also get more convective flow, so environmental temp would drop although rate of roast temp rise might stay the same. That's what happens on the Proaster. I'm wondering if the Phantom has a different fundamental architecture.

I played around whilst preheating the drum today (no beans onboard)

If I run gas at 80% and fan at 10% the env temp (labelled exhaust on CS) sits at steady a ROR (after 10 minutes) of about 33.

Increasing the fan to 100% drops that within around 40 seconds down to just 13.4.

Inside temp, today is about 18degrees in my roasting room for reference.

With beans on board, I don't notice the env temp drop so dramatically (probably because I'm watching other things like a hawk!) but bean temp ROR does spike up a few degrees then continue its decline.

Better answer hopefully!

[kwantfm]

I played around whilst preheating the drum today (no beans onboard)

If I run gas at 80% and fan at 10% the env temp (labelled exhaust on CS) sits at steady a ROR (after 10 minutes) of about 33.

Increasing the fan to 100% drops that within around 40 seconds down to just 13.4.

Inside temp, today is about 18degrees in my roasting room for reference.

With beans on board, I don't notice the env temp drop so dramatically (probably because I'm watching other things like a hawk!) but bean temp ROR does spike up a few degrees then continue its decline.

Better answer hopefully!

Informative, thank you.

[Lukemc]

Informative, thank you.

Does this differ much from what happens when empty with your roaster mate?

[kwantfm]

Does this differ much from what happens when empty with your roaster mate?

I haven't tried any of this empty... I just have one regimen for warming up the roaster. If I remember next week I'll give it a go and let you know.