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will brass work

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michael burton 1	09/11/2013 12:23:31
126 forum posts 32 photos	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
JasonB	09/11/2013 13:09:14
25215 forum posts 3105 photos 1 articles	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
fizzy	10/11/2013 23:29:05
1860 forum posts 121 photos	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 C	11/11/2013 11:30:32
7468 forum posts 230 photos	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
fizzy	11/11/2013 19:14:57
1860 forum posts 121 photos	Ian...totally agree that brass isnt perfect but it will last plenty long enough as a d-valve
Ian S C	12/11/2013 11:01:24
7468 forum posts 230 photos	fizzy, true. I tend to over engineer thing, even when it not needed. Ian S C

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