Haven't seen many reports for the small diesels so I'll post some numbers that I got today.
We only had around 5°C today and I preheated the engine to get it started more easily.
Engine is a PAW 55 (0.033 cui) BB RC with exhaust collector and it hasn't seen much fuel yet. Ran it today with graupner 7x4 with 30% castor in the fuel and got top revs around 7500rpm and an idle around 2800rpm, sweet sound!
I'm thinking of putting this in an Eastbourne 1913 for some relaxed flying....