Part 52: The Boiler Feed Pump Pt2

Welcome to Part 52 of my long term series of videos covering the build of Don Young's Hunslet 0-6-0 Saddle Tank Locomotive in 5" Gauge.
In this video, I complete the Boiler Feed Pump.
Given the nature of these sorts of projects, new videos will be posted as I progress through the build but there will be no regular cadence, rather their frequency will be dependent upon time available and of course real progress on my part.
If you like what you see, please do give me a thumbs up and subscribe.
Enjoy!

[@jwyatt631]

This has been a great series. Very well presented.

[@pauldoyley8354]

Looking good Mark. I'm just lurking for now.. Hope to build something in next year or two.

[@BruceVoelkerding]

Mark, I keep a 3/32" dia Brass Rod about 5 inches long by my Lathe. When parting off a small Part, I put it in the Tailstock Chuck and enter the Part, almost touching the End of the drilled Hole. This way when the Part is parted off, it just rolls a bit on the Rod. It sure beats losing it in the Chips.
To set the Ball Lift, one measures from the Face of the Pump down to the Ball. This can be done with a simple homemade device similar to a Depth Micrometer but with a Sliding Pin and Set Screw. From that Sliding Pin measurement subtract the Ball Lift and that is the dimension for the Mating Piece (the threaded portion plus the small Stop Portion on the Delivery Side). For the Inlet Side you would have to check the Ball Depth on the Mating Piece before locating the Hole for the Elbow.
The purpose of the Slot on the Inlet Side is to prevent the Ball from blocking the Passageway. Imagine if there was just a drilled Hole, when running fast the Ball could easily lift and severely constrict the flow of Water coming into the Pump. That is why there needs to be an open Slot down into the Ball Chamber on the Inlet Side.

[@markshomeengineering5243]

Hi Bruce,
Thanks for the tip on measuring the ball lift, I'll give it a go 👍
Regarding catching a part when posting off, I just stick a piece of paper under the chuck to catch it.
Mark

[@masterpiecesinminiature8299]

Yet another Great Video Mark.
Cheers.

[@RB-yq7qv]

Hi Mark. The ball bearing advise was correct never use the bashed ball. The pump should have no issues in delivering a steady water supply. 🤠

[@manuelcv9475]

Si señor eres un maestro