will brass work

[michael burton 1Participant @michaelburton1]

hi will brass work as a slide valve material just i have a big block of brass that i can use the cylinder is cast iron so will brass work at the mo i cant afford to get any differant material so would rather use what i have??????

also were would engineering plastics come in to use could you use somthing like acytel or delrin…………… this is just a courious question

the model is only going have minimal use

atb mike

[michael burton 1Participant @michaelburton1]

[JasonBModerator @jasonb]

For light use Brass will be OK though a bronze would be better. You could always silver solder a thin piece of bronze onto a brass block, if you cut a hole in teh bronze first then that will form the cavity in the valve.

J

[nigel jones 5Participant @nigeljones5]

hi..if your not planning on powering the national grid with it brass will be just fine, in my experience avoid plastics, they do bad things when they get hot!!

[Ian S CParticipant @iansc]

With a cast iron cylinder, steel could be used, but cast iron is better. Stuart Turner use bronze on engines like the S 9, and I presume their other engines too. Ian S C

[nigel jones 5Participant @nigeljones5]

Ian…totally agree that brass isnt perfect but it will last plenty long enough as a d-valve

[Ian S CParticipant @iansc]

fizzy, true. I tend to over engineer thing, even when it not needed. Ian S C

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