Blenheim operating limits and checklists

[IvanK]

"As for the propellers, i was under the assumption that the method of obtaining semi-adjustable RPM didn't involve setting the prop controls mid-way, but manually and constantly alternating between the two positions, ie a case of increased pilot workload and as such, useful only for specific phases of flight."

I think that assumption is incorrect Blackdog Kt The Spit manual implies that its just a matter of using the Prop pitch control as a Vernier device that enables you some additional control of Prop pitch other than just the Coarse and Fine stops. The location of the Prop pitch control in the Spit I makes it a little easier to manage.

As to the Blenheim with the controls mounted behind and under your left elbow and 2 to fiddle with that would be imo virtually impossible. As indicated in my earlier post there are no references at all to the Blenheim IV (and I) props being capable of intermediate settings other than Fine and Coarse.