Boldjava wrote:Hope that helps. If more is needed, call Steve or me at the shop next week. Better yet? Watch the Coffee of the Month video on Wed, 30 Mar, at 3p CST, and send a message to specifically ask a question.

Thanks a lot Dave. Much appreciated!

wrakocy wrote: Long story short, I'm having a heck of a time taming my fan.

Read this link, take two aspirins can call me in the morning.

So, I finally made it back to the roaster today to test out the drum speed theory.

Very happy to report that I was able to *completely* resolve the issue by dropping RPMs down into the 50-55 range (20-25 on my drum speed dial), as recommended by both Steve and Johnny. I only had time for one roast, but in its latter stages, I pushed the fan to 50 (again, my lowest setting is 39, but to date I had not made it past 43 without encountering the "bean sucking" issue). Not a single bean in either the chaff collector or the exhaust pipe post roast.

I can also verify that, at those RPMs, I was getting what to my eye seemed a 45 degree slope/tumble of beans through the sight glass, as recommended by Dave.

Thanks again to all for the input/feedback on this issue!