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Author Topic: 1. Jensen #50 pre-valve/connecting rod brass pin replacement  (Read 811 times)

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1. Jensen #50 pre-valve/connecting rod brass pin replacement
« on: January 13, 2024, 03:57:13 pm »
I noticed a little play in the connecting rod to valve pin, I will make new (tight) brass pin to remove play.



2. Jensen #50 valve pin replacement "success"
made a new valve/connecting rod brass pin for the Jensen #50, it should improve the "feathering in " of the steam to the piston on both directional strokes which should also improve more precise slow running. it is a small improvement that most likely no one else would care much about...but it bothered me.

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Bruce, St. Paul Indiana, USA
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Re: 1. Jensen #50 pre-valve/connecting rod brass pin replacement
« Reply #1 on: January 13, 2024, 08:30:10 pm »
Some nice fine-tuning work there Bruce .... right up your alley!

REALLY NICE!!!
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Re: 1. Jensen #50 pre-valve/connecting rod brass pin replacement
« Reply #2 on: January 14, 2024, 07:09:45 am »
Bruce, few folks can make "Good" even "Better"...but you have done so.  That engine has never run so well, probably even better than the day it was built.

Sweet,
Rog
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Re: 1. Jensen #50 pre-valve/connecting rod brass pin replacement
« Reply #3 on: January 14, 2024, 01:29:38 pm »
Bruce, that is a gorgeous engine, and you did right by it. I can't believe how smooth it runs at low speed!

In a way, you remind me of me. I tend to agonize over the amount of play in crank bearings, rod bearings, valve linkage... and a part of me is always scolding, "Let it go, it runs fine...", and usually I listen.  ;)

A good example is the Carette engine on my bench now. I've already decided to make a new crankshaft and install bushings, but I keep thinking I might as well go ahead and make some sleeves for the loose connecting rod and valve linkage. Then I think, why? It won't make that much difference, and it's not like it's going to be run very much -- at least not like when it was new. It will spend most of its time on the shelf. And so the conflict rages on...

Paula
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Re: 1. Jensen #50 pre-valve/connecting rod brass pin replacement
« Reply #4 on: January 14, 2024, 02:48:56 pm »
Quote from: Paula on January 14, 2024, 01:29:38 pm
Bruce, that is a gorgeous engine, and you did right by it. I can't believe how smooth it runs at low speed!

In a way, you remind me of me. I tend to agonize over the amount of play in crank bearings, rod bearings, valve linkage... and a part of me is always scolding, "Let it go, it runs fine...", and usually I listen.  ;)

A good example is the Carette engine on my bench now. I've already decided to make a new crankshaft and install bushings, but I keep thinking I might as well go ahead and make some sleeves for the loose connecting rod and valve linkage. Then I think, why? It won't make that much difference, and it's not like it's going to be run very much -- at least not like when it was new. It will spend most of its time on the shelf. And so the conflict rages on...

Paula
exactly! absolutely "everything" can be improved... but at what cost (in effort) to the minute difference it may make. This was an easy fix and something that will last for another 70 yrs. I hope.
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Bruce, St. Paul Indiana, USA
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Re: 1. Jensen #50 pre-valve/connecting rod brass pin replacement
« Reply #5 on: January 14, 2024, 05:17:16 pm »
Golly that's a nice #50 Bruce  :-*
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Re: 1. Jensen #50 pre-valve/connecting rod brass pin replacement
« Reply #6 on: January 14, 2024, 05:56:07 pm »
Quote from: Jim on January 14, 2024, 05:17:16 pm
Golly that's a nice #50 Bruce  :-*
Thanks Jim, but Roger (IndianaRog) did all of the hard work. 😊
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Bruce, St. Paul Indiana, USA
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