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Brass cylinders average running temperature

Posted: Mon Jul 06, 2026 1:22 pm
by Preseli Chris
Hi All .
Question . Approximately what is the average temperature one can expect the brass cylinders on a live steam loco to reach in degrees Celsius , factoring the blow off valve operating at 40psi and varying engine loads.

I have sourced some engine block paint and some etch primer which can handle up to 200c . By painting the cylinders will this affect the heat dispersion adversely or am I being to critical 🤔

Chris