Royally misses mash in temp

[petep1980]

I got my strike temp according to beersmith 2.0

Grain: 7# @ 69F
10-gallon igloo @ 66F
Mash in: 16qts
Desired temp: 152F
Strike temp: 162.6

When I added the 162.6F water my mash temp was 156F!!!!!

I have a thermopen too btw.

Thankfully using beersmith I was able to correct with about 1qt of tap water and got to 151F.

Could it be the 162.6F was the temp at the top of the vessel heating the water? Reverse engineering suggests my strike was more like 170F.

 

[Psych]

I dunno if 4F could be classed as "Royally" missing it...I've missed mine by 15 degrees, now that's way outta there

Were you 100% sure of the grain temp and weight and did that match what you entered into Beersmith?

Or maybe that darned Beersmith 2.0 tricked you with it's confusing menu structure and way too much information that doesn't pertain to anything useful. I can't find anything I need to find in a hurry in there now.

 

[terrapinj]

green bay rackers suggested 162° for strike temp as well

out of curiosity why such a thin mash? 2.3qt/lb seems pretty high but I'm new to AG

 

[cg17]

Dont beat yourself up, 4 degrees isnt a huge miss.

 

[petep1980]

green bay rackers suggested 162° for strike temp as well

out of curiosity why such a thin mash? 2.3qt/lb seems pretty high but I'm new to AG

It's a partial mash, and I don't mash out or sparge anymore.

4 gallon mash in for partial mash, 7 gallon mash in for all grain.

So I'm going to figure the temp down below was much higher than that on top.

 

[malkore]

I think your super thin mash is throwing off the calculator. Your grain and tun just aren't sinking enough excess heat.

Most of use pre-heat our cooler mash tuns, and then strike around 10F higher than the desired temp, assuming grain is about 70F, to hit the desired rest temp.

As you see, there's no hard fast rules since we all have home made DIY breweries...just too many variables.

 

[terrapinj]

It's a partial mash, and I don't mash out or sparge anymore.

4 gallon mash in for partial mash, 7 gallon mash in for all grain.

So I'm going to figure the temp down below was much higher than that on top.

are those #s significant or just something you decided upon?

 

[hops2it]

Because I inherently over engineer everything, my mash tun weight was significantly higher than the default Beersmith value. Once I adjusted that number upward, it made a significant impact on strike temp required with the "adjust temp for equipment" box checked. Just a thought.

 

[petep1980]

Because I inherently over engineer everything, my mash tun weight was significantly higher than the default Beersmith value. Once I adjusted that number upward, it made a significant impact on strike temp required with the "adjust temp for equipment" box checked. Just a thought.

I think that's my problem. I am always the RDWHAHB guy until I brew.

 

[Yooper]

I think your super thin mash is throwing off the calculator. Your grain and tun just aren't sinking enough excess heat.

I think this is the issue- that's a super thin mash. The grain just doesn't sink up enough heat for a 2.3 quart/pound mash.

 

[petep1980]

I think this is the issue- that's a super thin mash. The grain just doesn't sink up enough heat for a 2.3 quart/pound mash.

I would think beersmith would be able to account for it. Sound thermodynamics should be able to handle this as a mixing chamber no problem.

m1h1 + m2h2 - q out = m3h3

If it can do it for 1.5 qts per pound, it should be able to do it for 2.3 qts per pound, hell it should work for 20 qts per pound.

 

[Yooper]

I would think beersmith would be able to account for it. Sound thermodynamics should be able to handle this as a mixing chamber no problem.

m1h1 + m2h2 - q out = m3h3

If it can do it for 1.5 qts per pound, it should be able to do it for 2.3 qts per pound, hell it should work for 20 qts per pound.

Yes, of course it should. But apparently, it doesn't!

 

[petep1980]

Yes, of course it should. But apparently, it doesn't!

Beersmith's does not.

 

[IrregularPulse]

Had you set up your equipment profile?

 

[petep1980]

Had you set up your equipment profile?

Yeah.

I am not going to worry about it for now.

I just selected the 10-gallon mash tun from the options they had.

I even took the temps of the grain before hand.

I'm gonna go with whatever, I have the thermopen, and I have beersmith's mash correction available. Next time I'll just be armed ready with a gallon of tap water. That worked well.