So I did a test yesterday becasue I was bored/curious…burious(?), and I wanted to see how fast the roaster can reach sustained temps 300, 400, and 500 Fahrenheit with a 1min ramp, at fan speed 60, 80, 100 and see what temp that read on my thermometer. I did not have any beans loaded so this was just to test the heat application from roaster to thermostat soley with air.
In a way it confirmed what I have seen time and agian.
Results: Basically the slower fan (60%) took much longer to reach any temp recorded on my makeshift thermostat recorded temps were 195F on the thermometer for 300F on the roaster app, 270F thermometer/400F Roaster (app) and 350F thermometer/500F Roaster (app). At sustained temp profiles 300 and 400 at 100% fan speed the thermometer would reach 5 degrees hotter. At 60% fan, temps reached and sustained at the 8min, including the 1 minute needed to ramp. 80% fan reached temps by 3mins usually, and 100% fan reached temps within a minute after the ramp except @500F and 100% fan the temp reached 467-468F/1min on the app and 325 on my thermometer and did not go any higher. I let this run and stopped at 5min and not 8 min because I did not want to overexurt the machine and the whole time the temp would no go higher. @500F and 90% fan, the temp reading on the app did reach 500 but was slightly delayed then the 1min ramp. 80% fan reached but with a similar curve/gap as 90% 500@1:30ish min mark.
What does it all mean? Loosely I’d wager that an increasing fan magnifies the heat applied and for a flat temp, this helps carry more energy to the bean and so helps keep the roasting going. A decreasing fan, decreases the heat. But I’d wager that there are points where this changes like when 60% fan at the beginning doesn’t get the beans to move or a 100% at the end and all the beans go flying out… a second guessing/ no evidence conclusion could be that instead changing the profile or temps one could simply walk into Mordor or change the fan to slightly increasing fan profile (cold weather) or slightly decreasing (hot weather). A thought for future testing…