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Author Topic: Make shift water pump  (Read 1033 times)

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Make shift water pump
« on: March 05, 2024, 05:58:17 pm »
Since the original water pump needs seals, I created a way to pump/ inject water into the boiler.

I put a tube on the intake port and using a syringe I inject hot water in. It works with no issues.  I’ll need to find some O rings that fit the original pump, but for now this works fine.   

The only thing I’ll need is a larger syringe.

Just have to make sure to close the valve off before disconnecting syringe or I’ll get burned by scolding water and steam.  LOL!

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Here is a video of it in action:
https://www.youtube.com/shorts/0qC3RR81X1U
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Re: Make shift water pump
« Reply #1 on: March 05, 2024, 06:07:34 pm »
Live steam model railroaders and boaters often use what is called a Goodall Valve and a simple trigger operated spray bottle to pump water into their boilers at pressures that are often 60 psi and beyond. It is a pretty convenient method for keeping a boiler topped up and running continuously!

Your syringe set-up in not really too dissimilar.
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Re: Make shift water pump
« Reply #2 on: March 06, 2024, 08:21:28 am »
Very ingenious Travis.

BTW: I have the O rings that you need to seal the pump.
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Re: Make shift water pump
« Reply #3 on: March 06, 2024, 09:39:41 am »
Quote from: txlabman on March 06, 2024, 08:21:28 am
Very ingenious Travis.

BTW: I have the O rings that you need to seal the pump.


I am not sure if it is O rings, but I know there is only 1 ball bearing in the pump.    I’m not sure if there is supposed to be 2.

I’d really need someone to take apart their water pump on another Doll engine and tell me what seals the pump shaft and if there is 2 ball bearings not 1.  I wouldn’t want someone to do that on a working pump.  I’m trying to find diagrams but it’s very hard on this old of an engine. But knowing me I’m a perfectionist. 

I tried looking through that book you gave me but didn’t find that model.
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Re: Make shift water pump
« Reply #4 on: March 06, 2024, 09:51:43 am »
I also have a bag of steel bearings that were gifted to me by Gil.
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Re: Make shift water pump
« Reply #5 on: March 06, 2024, 09:56:49 am »
Only 1 ball bearing which acts as a check valve an the intake side.
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Re: Make shift water pump
« Reply #6 on: March 06, 2024, 10:26:54 am »
Quote from: parallelmotion on March 06, 2024, 09:56:49 am
Only 1 ball bearing which acts as a check valve an the intake side.

What prevents blowback of the water from the boiler?   When I open that valve it shoots out through the pump stick onto the eccentric.   I guess seals?
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Re: Make shift water pump
« Reply #7 on: March 06, 2024, 10:35:37 am »
Beautiful engine.  Mine needed a few parts and the valves were stuck.
I worked the problems out and it runs well.  I do need a pulley for
the inside end of the crank/drive shaft.

Re the pump...I too have issues.  If I rotate the flywheel by hand
when there is no pressure in an empty boiler, the pump has worked,
sending water up.  With a steamed up boiler,  no go.

By-the-by...My Empire B43 pump has two ball-bearing check valves.

Hmmmmm,
Wayne
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Re: Make shift water pump
« Reply #8 on: March 06, 2024, 11:04:18 am »
Here is someone making a replica of the exact water pump… so it does have 2 ball bearings.   However his pump rod is flat while
Mine has grooved in it.  Hmph!

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Re: Make shift water pump
« Reply #9 on: March 06, 2024, 11:52:20 am »
Quote from: komet163b on March 06, 2024, 10:35:37 am
Beautiful engine.  Mine needed a few parts and the valves were stuck.
I worked the problems out and it runs well.  I do need a pulley for
the inside end of the crank/drive shaft.

Re the pump...I too have issues.  If I rotate the flywheel by hand
when there is no pressure in an empty boiler, the pump has worked,
sending water up.  With a steamed up boiler,  no go.

By-the-by...My Empire B43 pump has two ball-bearing check valves.

Hmmmmm,
Wayne

Does the engine stall, or deadhead?   Or does water just squirt out onto the eccentric, when the boiler is steamed?
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Re: Make shift water pump
« Reply #10 on: March 06, 2024, 11:53:20 am »
Quote from: rails4ever on March 06, 2024, 11:04:18 am
Here is someone making a replica of the exact water pump… so it does have 2 ball bearings.  However his pump rod is flat while
Mine has grooved in it.  Hmph!



Astra-Werke is a Savant.  I watched every video in this series.
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Re: Make shift water pump
« Reply #11 on: March 06, 2024, 02:33:42 pm »
Quote from: txlabman on March 06, 2024, 11:53:20 am
Quote from: rails4ever on March 06, 2024, 11:04:18 am
Here is someone making a replica of the exact water pump… so it does have 2 ball bearings.  However his pump rod is flat while
Mine has grooved in it.  Hmph!



Astra-Werke is a Savant.  I watched every video in this series.

I watched it too.  Amazing work he did. I want to know where he got the diagrams!
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Re: Make shift water pump
« Reply #12 on: March 06, 2024, 02:38:39 pm »

He did the drawings himself as I recall.
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Re: Make shift water pump
« Reply #13 on: March 07, 2024, 02:14:55 pm »
Rails....Thanks for your question re my feed pump and now
I have a good reason to, once again, make it work by hand
with an unpressurized boiler.  If that still works (no
guarantees) then a boiler under pressure, and if that works
a properly steamed-up boiler.

Could you please add a good photo of the pulley and crankshaft
on the inboard side of your engine.  My pulley is missing and
I may also be missing a spacer.

Thanks,
Wayne




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Re: Make shift water pump
« Reply #14 on: March 07, 2024, 03:08:59 pm »
Quote from: komet163b on March 07, 2024, 02:14:55 pm
Rails....Thanks for your question re my feed pump and now
I have a good reason to, once again, make it work by hand
with an unpressurized boiler.  If that still works (no
guarantees) then a boiler under pressure, and if that works
a properly steamed-up boiler.

Could you please add a good photo of the pulley and crankshaft
on the inboard side of your engine.  My pulley is missing and
I may also be missing a spacer.

Thanks,
Wayne

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The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin
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