Thread: Rob Roy

You have started a big project. Only by taking little steps will it get finished. Somedays there will be nothing to show for an hours work, other days it will appear a lot has been done.
Marking out and setting up takes time, but will appear that nothing has been done, but if it is not done accurately it will show.

Thank you for posting your progress.

Originally Posted by Handyjack

You have started a big project. Only by taking little steps will it get finished. Somedays there will be nothing to show for an hours work, other days it will appear a lot has been done.
Marking out and setting up takes time, but will appear that nothing has been done, but if it is not done accurately it will show.

Thank you for posting your progress.

So true. Like today I spent most of the day sowing seeds in the greenhouse after a visit to the garden centre, had to handcuff the wife to stop her buying flowers for the garden as it is too early in the year for them just brought vegetables.
Then a parcel arrived full of various castings for the loco, I did manage a little more time this time on the rear buffer beam angle brackets which I have drilled the four holes in each ready for them to be riveted to the beam

Other than workshop time I seem to be spending a lot of time in the garden preparing for the nice warm weather and growing season.



Anyway workshop time has had some time. Completed the second buffer beam rivets, picture with both you will notice that the rear on has only 4 rivets per angle bracket not sure why but that is what the plan calls for.
Also one of the horn blocks machined and test fitted very pleased with the fit no slop but just slides in that will need cutting in half and riveted in place now to do the other two.




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Looking good unfortunately life jobs get in the way at times.

Originally Posted by Peter White

Looking good unfortunately life jobs get in the way at times.

The thing is I also enjoy pottering about in the garden as well as woodturning and model making in wood and now metal so trying to fit them all in, I can manage two of the three in one day

Keep up the good work Derek

Originally Posted by Dalboy

The thing is I also enjoy pottering about in the garden as well as woodturning and model making in wood and now metal so trying to fit them all in, I can manage two of the three in one day

That nearly sums me up Derek, general woodworking more than model making and a bit of mountain biking thrown in as well.

At last the main horns are completed except for the rivet holes which have been marked. I was a little worried when I started them but soon got into doing them after many measurements taken and calculations checked double checked and even triple checked before a cutter touch the metal.
All three sets fit nicely into the frames now it is a case of drill the holes in them and the frames ready for riveting. I am happy with how they turned out, the inner corners will be filed square once they are fitted.
As can be seen in the photo they are still joined, that is why there is a gap at the top.

Getting closer to the first major assembly of the chassis



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I finally got the main hornblock frames riveted into the side frames that was 7 rivets for each one and six to do. I need to set them up in the mill to cut back the blocks so they sit flush with the bottom of the frame as can be seen in photo 2 they are sticking up



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I also turned two bushes for the weighshaft which needed to be a press fit, the first one I did was just a fraction to loose so had to start again but got there in the end which was annoying as it was only 0.001" too small.


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Yet more gardening had to plant three roses that the wife got for mothers day more blood drawn doing those than when metalworking at least the garden is starting to look nice but a lot still to do like transplanting seedlings and final prep of the veg patch.

Anyway some more progress on the loco Cut a block of gunmetal into a long axle box shape (not shown) then it was a case of cutting this into six 1" long pieces. Test fitted into the horns with a very little fettling they all slide nicely each one was numbered as well as the horns to keep them in the right order.

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Set up the vice on the mill with a stop which helped set up time for each of the axle boxes which were drilled and reamed for the axles, then another set up to drill two holes in each for the springs. You can see the numbers on the boxes and on some of the horns matching each together this was done so the numbers are on the inside of the chassis and will not show on the completed model

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Getting very close to the chassis assembly still need to make the springs and the horn stays

Looking good I am not a good metal worker.

Originally Posted by Peter White

Looking good I am not a good metal worker.

Neither was I until I started this one so anything is possible

Six Hornstays made and drilled then the horns drilled and tapped followed by shortening the fixing screws as I only had some which were too long these are 5BA bolts





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The centre support rod was cut and drilled either end then tapped 6BA so I took the opportunity to do a dry fit. Hopefully will be able to get the surface plate out and get everything squared up and the holes drilled and tapped to hold the buffer beams in.

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Time to drill the last holes ready for assembly first job was to set the frame on my surface plate had to do this across the diagonals and add a steel bar of the correct diameter to bring the frames in a level plane check no rocking I also checked the buffer beam also sat correct across the frames as well as insert a silver steel axle (well it will be the axle when cut and turned) this was to check that it was at right angles to the main frames.

This went quite well and did not take long which was a relief clamped the buffer beams to hold every thing in place

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Now it was assembled the holes in the buffer beams was marked through the frames and one of them was removed to drill all the way through. Only just managed to drill some of the holes as the drill bit was just a little short to do all of them.

I also found out that my 6BA tap was too short so could not tap the holes. I do have some long series taps but not the one needed so now have to wait for one to be delivered. Hopefully today I will get the other end drilled and tapped as it need a different size which I have and that is 5BA


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