Hi Hunty,

Mate need your break down of your grain bill. Anyway this is a rough one. Based on the asumption that your 5kg of grain is all 2-row pale malt with extract ppg of 38 points.

Using Palmer's method, PPG (Points/Pounds/Gallons(US) to find effciency.

First calculate points.

40 points (Your OG) x 8.45gal(32Lt) = 338points.

Next Points/pound: 338points/11Lb(5kg) = 30.72. Take it as 31ppg.

So your efficiency: 31/38 x 100% = 81.5789

Round it off to 82% efficiency.

HT

Hunty wrote:I recently bought one of Raymond's 3- roller crankenstein's and while I have a relatively fine crush I am calculating efficiencies like 84% which seems extraordinarily high to me...

So if LORD Keat , master of efficiency or anyone else can advise if my calculation is correct, here is my data:

Volume of runoff: 32 litres

SG of runoff: 1.040

Temp SG measured: 25 deg C

Weight of grain: 5.0 kg

Grain type: Bairds Pale Ale

Cheers

Hunty