RIMS Mash step-timings?

[Emian]

I have my mash system set up with a home made RIMS tube (copper) and it heats about 1F per minute.

I have a stainless tube coming from Brewers Hardware and expect that will be more efficient - perhaps 2 or 3F a minute.

My question is - how does one account for the step rise between rests?

For example - if I were to go with rests at 130F - 30mins / 140F - 40mins / 158F - 20mins: When do I start the timing for the 140F? When I reach it or as soon as I start getting into the Beta Amylase active zone (133F or so)?

And similarly - when do I stop timing the 40mins - as soon as I start the rise to 158F, or do I start my rise early and consider the 40mins all the way up to the top end of the Beta Amylase active zone (150F or so)?

Thanks for any help and insight.
Ian

 

[MalFet]

Generally, start the timing when you hit the temperatures, not when you start rising. The most important thing is to be consistent.