[modeleng] Re: Why is it so quiet?
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Sun, 19 Feb 2006 08:36:47 -0800 (PST)
Has Miss Fern un-plugged the stair lift again?
Al
--- Jesse Livingston <fernj1@xxxxxxxxxxxxx> wrote:
> I have always reamed my pump bores and used brass
> barrels with bronze
> plungers. Works for me anyway. There may be
> stainless plungers on the
> crosshead pumps on my American, but it is in the
> basement and I am upstairs,
> need I say more?
>
> Jesse in West Tennessee
>
>
> #1--What materials were used in full sized practice
> and WHY cannot the same
> material be used in our models? I'm using ground
> Stainless in mine and if I
> have to replace it after several years, I can do
> that.
>
> #2--WHY must the inside of a pump bore be lapped
> instead of just a good
> bored or reamed finish? Isn't the rings/packing job
> to take up any small
> irregularities in the finish of the bore?
>
> Just the rambling thoughts of a total newbie.
>
> Al Messer
>
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