Re: Not Model A but steam whistle question
You will not do any harm using air on a steam whistle. The higher the pressure the more sound within reason. Be sure whistle is clean inside- no grit. I'd start at 100 psi and go up till you are pleased. Most locomotives at the end of their era worked at 200-300 psi. The key is having enough volume of air thru the whistle. The whistle pipe size will show you that. Good luck. Bill
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