Cool Box mash tun - max capacity?

[Frothy]

I've got a 32L thermos coolbox mashtun. According to a few retailers these will take 10kg of grain.

I'm looking to do a 32L batch of Fullers ESB clone 1.054
@ 70% efficiency it takes 10.18kg of grain & I fly sparge so
I need a bit of head space to work with.

Pale Malt 6.96kg
Flaked Maize 2.15kg
Crystal Malt 1.07kg

Can it be done?
I know for sure I'll have to reduce my strike water from 4L / kg

Frothy

[moorsd]

It's going to be tight, but should be ok!

I believe when the HB shops quote 10kg capacity it is with the normal grain/liquer ratio in mind (2 pints per pound of grain?)...using 10.18kg will mean you will have to use a very slightly stiffer mash, which may mean you have to mash a bit longer that's all?

[Reaper]

Have a look at Reapers last thread, he manages a 10 gal brew length in a 32L cooler

Hi Ive had just short 9kg in my cool box mash tun with a little room to spare, but the mash was a little thick, it had about 3 gallon of water in it.

regards Paul

[Orfy]

I mash with 2.6L/Kg.

I'm surprised to hear people using 3 an 4L

[Garth]

Hi Frothy,

I recently did a double EB Stout brew which was about 8Kg of grain in my 28/32litre Thermos, I was worried there wasn't going to be enough room but there was no problem at all, it still had a quarter/fifth of the cool box to go

even if it's up to the lid it'll be fine, get it in the tun matey

[steve_flack]

I mash with 2.6L/Kg.

I'm surprised to hear people using 3 an 4L

I used to use about 2L/kg but with my new 10 gallon set up I'll be recirculating and batch sparging so I'll be upping the ratio to 3L/kg (maybe a little more). I've got a 70L coldbox so I shouldn't be running out of room.

[DRB]

www.Rackers.org/calcs.shtml

[Orfy]

I'm fine with the calcs.
most books I've read advocate around 1-1.25 qts/lb

=0.94L/0.45l * 2.22

=2.1L/k.g to 2.62L/KG