[Steam-engine] boiler feedwater injector conection

[Richard Strobel]

Jim..the 1/2" port is there on the top...and another 1/2" port is right 
below it at the mudring.  As long as injected water is used, I personally 
don't see a problem.  But I need to talk to the man again.

  Building a water pump driven off the engine would be a cute trick...will 
work on that.  Our eccentric strap is inside the engine case and there's a 
side cover involved....plus the eccentric is steel to steel, so maybe not 
loading it down too much is a good idea.

  Thanks and doing my damndest to keep it safe.

RickinMt.


----- Original Message ----- 
From: "James Mackessy" <jmackess at twcny.rr.com>
To: "Steam-engine mailing list" <steam-engine at lists.stationary-engine.com>
Sent: Saturday, November 05, 2005 8:07 PM
Subject: Re: [Steam-engine] boiler feedwater injector conection


> Hey Rick! If you don't have a port on the boiler, how about a tap in the
> main steam line to
> supply the injector? Steam is steam, the injector won't care if it's on 
> the
> boiler or close to
> the boiler. I wouldn't go drilling and tapping any holes without running 
> it
> by the inspector
> first to see how fussy your state is about such things. As for a pump, it
> can be as simple as
> a displacement rod running into a chamber through a packing gland, with 
> two
> off the shelf
> check valves plumbed onto it. If it's small enough, it can be run off the
> engine's eccentric, as
> they often did on early engines. I've even seen some with a disk with a 
> tee
> slot on the end
> of the crank so the stroke could be adjusted to control volume. When the
> engine runs, so
> does the pump. Adjusting the volume to an amount roughly equivalent to 
> what
> the engine is
> using would be the goal, and that won't be much. This works best at lower
> pressures, such
> as 65 to 85 psi. It does add a load to the eccentric strap. The little
> Leffel 5HP rig I've mentioned
> uses two 1/2" injectors, and that was OK with the inspector up here, but 
> now
> a duplex pump
> has been added "just for fun". There's a lot of ways to get the job done,
> but it sounds like you
> are going to have a lot of fun with this rig! Good Luck and play safe!
> Jim M.
>
> _______________________________________________
> Steam-engine mailing list
> http://www.stationary-engine.com/mailman/listinfo/steam-engine
>