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Thread: Rob Roy
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26th May 2022, 04:12 AM #91
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This is the set up I have been preparing as well as a connecting rod having been machined still in place
DSCF2527.jpg
This is the first stage as can be seen two holes drilled and one end rounded. Still needs a taper milling from the rounded section up to a square section where the large hole is and also machining the two sides to thin the part.
This requires two of these I did have some problems mounting the piece on the rotary table but beat it into submission in the end
. The next one will be easier as will the 4 coupling rods
DSCF2529.jpgDSCF2531.jpg
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26th May 2022 04:12 AM # ADSGoogle Adsense Advertisement
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26th May 2022, 10:11 AM #92
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You are a first class fitter and machinist Derek
Top Work
Regards
Keith
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26th May 2022, 11:13 AM #93
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Derek, Looks like the prep work and jig is more time consuming than the part; BUT repeatable accuracy for sure. Well done sir. Cheers Peter
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28th May 2022, 11:48 PM #94
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Thank you Keith and Peter.
Today has been a bits and pieces day no work on the Loco or finishing the bowl I need to make as the garden needs some weeding and the bandsaw is in desperate need of a new blade(Now done as I always keep spares), also set up one of the three grinders as a dedicated drill sharpening station which I am working on at the moment just came in for a coffee.
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2nd June 2022, 08:39 AM #95
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Well one of the two connecting rods made just the bushing to sort out and the oiling cup.
DSCF2545.jpg
I decided to make these even though they will not be needed until the cylinders and other bits are done but it gave me the chance to to work out order of machining as the coupling rods which I will use the same techniques on are a little more involved so I used this as a little practice. So once these are made I will start on the coupling rods
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4th June 2022, 10:23 AM #96
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Classy work Derek
Regards
Keith
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18th June 2022, 09:32 PM #97
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Sorry Keith missed your post thank you.
Anyway finished the connecting rods with all the bronze bearings and the brass oiler which is only 5/32" diameter.
DSCF2582.jpg
I also managed to quarter the wheels and fit them to the frame I now have a rolling chassis just a few things to make before starting on the cylinder assemblies
DSCF2585.jpg
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18th June 2022, 09:59 PM #98
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Was just thinking about you this morning Derek wondering how you were travelling.
Looks like you’ve been busy.
Cheers Peter
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19th June 2022, 02:08 AM #99
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20th June 2022, 12:59 PM #100
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WOW Derek,
That is looking fantastic !!!!
You must be so happy how it's all coming together.
TOP STUFF Mate
Regards
Keith
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1st July 2022, 05:55 PM #101
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1st July 2022, 06:44 PM #102
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Know what it feels like to make a whoopsie, just remade 8 wooden truck wheels I mucked up, we just have to learn hopefully.
I'm sure it be incredible when finished.
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15th July 2022, 10:33 PM #103
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Not a lot to show at the moment but have now got back to roughly where I was before I messed up the coupling rod now to get and finish them all. A little warm here but not as hot as some of you guys get during your summers. Hot enough to make it uncomfortable in the workshop for long periods of time.
I did manage to make the slide valves out of gunmetal castings that is why the bottom of the pockets look a little rough but that is not something that will effect the running when complete the size of the pockets and outer surfaces are what matters.
DSCF2624.jpg
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16th July 2022, 11:22 AM #104
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Good stuff Derek.
It's cold here at the moment. Averaging about 14C during the day
Regards
Keith
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7th August 2022, 11:53 PM #105
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Not updated lately been so engrossed in machining so a little time to catch up.
Machined the cylinder blocks so that i had some reference surfaces to work from as well as the steam chests
DSCF2689.jpg
Steam chests finally machined just the drilling of fixing holes to the cylinder block as well as drill and threading for the packing gland
DSCF2692 (2).jpgDSCF2694.jpg
I have finished the drilling for the packing gland but no photos.
Started to machine the cylinders to their correct size should have the second one done by this afternoon before remounting and boring the cylinder in the correct position to the valve face
DSCF2711.jpg
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