First crack should happen at around the 10 minute mark/200 degrees C.Originally Posted by 545851515252545F455E44370 link=1325199220/0#0 date=1325199220
There is a spreadsheet in one of the stickys that is a good guide for roasting.... But without a temperature reading it is useless. Buy a multimeter with a probe ASAP and youll get much better and more consistent results. You dont necessarily need one that has a data port, just pair it with a stopwatch and the guide and youll get the same effect.
As far as leaving the roast for 48 hours, this is to degas the beans and develop flavour. Some beans need a week or more to develop their full flavour potential. Good luck with your roasting.