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Old 04-17-2013, 01:57 AM   #1
hubbs
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Default iBrewmaster mash calculations

I have been using iBrewmaster recently and I really like it, and find rather handy.

However, I am really struggling with the mash temperature calculations. I use their infusion auto calculators to estimate my strike water temperature and I always come out ~4F high. I have since downloaded the (free) SpargePal app and it is almost perfect. It tends to calculate my strike temp roughly 4F less than iBrewmaster and hits my mash temp very closely.

I email their support and they were not at all helpful, they said adjust my defaults but gave me no guidance as to what, why or how.

Please help!

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Old 04-17-2013, 02:44 AM   #2
rkorn74
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I use iBrewmaster on all my brews and hit the temps dead on. My questions would be, do you pre heat your mash tun and what is your grain temp?

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Old 04-17-2013, 02:51 AM   #3
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I usually fill it with hot water, and let it sit for 15 minutes or so.

Grain temp is usually room temp, maybe 70F.

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Old 04-17-2013, 03:46 AM   #4
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You might be able to decrease the "Mash tun temp loss" parameter in your mash profile. This parameter add that many degrees to your strike temp. Lowering it would lower your strike temp and lower the temp your mash settles at by a similar amount.

I don't know what the default is but it may be > 0.

The only other temp related parameter in the mash profile is the grain temp. Increasing this will decrease your strike temp and therefore decrease the temp your mash settles at after stirring.

Good luck.

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Old 04-17-2013, 07:44 PM   #5
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Funny that you say you are off by 4 degrees because iBrewmaster defaults to a 4 degree temp loss on your strike water. But if you are waiting until the water is at the temp it tells you then you dough in you will end 4 degrees high. What that adjustment in your profiles allows for is you to hear your strike water to that temp then toss it directly in the tun with grain at the same time and you should come out spot on after stirring. But, with all the variables involved with that method I prefer to set my tun loss to zero in the mash profile and just get the strike water to the temp it says, adjust my mash profile for grain temp then dough in and it usually ends within a degree or so. Cheers, I love iBrewmaster too!

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Old 04-17-2013, 09:20 PM   #6
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Yeah, it is pretty cool!

I checked and it was set to 4degF MT loss. I changed it to 1degF, we shall see how that works.

Thanks for the help

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