I'm hearing a lot about surface-to-volume ratio and increased rate of acetic acid production, but I cannot find any data about the observed change of rate with change in volume of barrels of the same wood composition and thickness. While I can understand the basic argument about increasing oxygen content with smaller volumes, I am curious to know if anyone has published a study looking at acetic acid content of identical beers allowed to age in different sized barrels across time. I've seen some vintner literature on wines aged in barrels with different stave thickness with surprisingly counterintuitive results. It'd be nice to know if the magnitude of impact is large or small. The average homebrewer may find it prohibitive to buy and maintain larger volume barrels, but may want to demystify the amount of acetic acid produced in a smaller, more affordable barrels in comparison to their larger brethren.