[Steam-engine] Long staybolts

[Dan Donaldson]

    My undertanding is that long thru stays are rods with the thread rolled 
at the ends only instead of cut.  The rod is a little smaller in diamater 
that the threaded ends when rolling theads.  That way one end can be 
threaded in to one sheet past the couple of inches of thread then slid thru 
to the other sheet.  Then turned so both ends thread into the sheet on each 
end.
    A lot of boiler makers are welding the long thru stays instead of 
threading them as well.

Dan Donaldson

----- Original Message ----- 
From: "Andy glines" <pioneersop96 at yahoo.com>
To: "Steam" <steam-engine at lists.stationary-engine.com>
Sent: Wednesday, October 27, 2004 9:09 AM
Subject: [Steam-engine] Long staybolts


> At steam school, The guys from B&B showed us how the
> shorter stays are installed.  The bolts are basically
> all thread rod which are trimmed off and hammered
> over.  How does a long stay work?  My boiler has 2
> stay bolts about 7.5 ft long.  Surely they didn't use
> a tap that long.  Were the bolts threaded for the
> whole length?  How were they installed?
>
> =====
> Andy Glines
> Evansville, IN
>
>
>
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