Richard wrote:This thread, Diedrich Home Sample Roaster; reflections on larger home roasters, from about a year ago provides some reading on the subject.

swines wrote:The difference in use between this roaster and a gas fired roaster is the hysteresis associated with the temperature change due to the electric IR heating elements needing time to respond versus the instantaneous heat application available with a gas fired roaster. With a gas roaster, you have a "4-minute window," meaning what you did two minutes ago affects the roast now, and what you do now will affect the roast in two minutes from the time you've made the change.

The HR-1 has about a 5 minute window (2.5 minutes on either side of the change). So, you have to setup your roasting profile to the machine's response.