Rob Roy loco

[Dalboy]

Thank you Malcolm and Chas plodding along very slowly

 

[Dalboy]

Did not realize that I have had no updates on this build but it did stall for a while as I had to make some Christmas presents and then when I did get back onto the build I made a right mess up of the cylinders which I am now awaiting some replacements of.
In the mean time I have been working on a Farm Boy hit and miss engine and have nearly completed the front frame of.

Some very interesting set ups to get this far

 

[CHJ]

Outstanding finish on that intricate form Derek, excellent machining setup and cutter control to get such smooth blending of curves.

 

[Dalboy]

Outstanding finish on that intricate form Derek, excellent machining setup and cutter control to get such smooth blending of curves.

Thank you Chas. I have not posted much lately so need to catch up.

I have learnt so much in this piece not how to set up for the different cuts and forms. It takes me a long time as I am double checking every measurement except one which I messed up but to not cause any problems so have left it and it will not notice in the end engine build thankfully.

 

[Dalboy]

Guess what, I have returned to this build of a Steam loco Rob Roy. Just started making some of the many linkages. I will update as more are made.

As you can see, I have labelled them so as not to mix up parts and names for when I start to assemble them

 

[CHJ]

Guess what, I have returned to this build of a Steam loco Rob Roy. Just started making some of the many linkages. I will update as more are made.

As you can see, I have labelled them so as not to mix up parts and names for when I start to assemble them

View attachment 36570

Good to see you picking this project up again, the long break should provide a new stimulus once you have got your head round the 'to do' list for what must seem a never ending endeavour.

 

[AndyP]

Hear, Hear,
I’ve had to go back to so how far you had progressed .

 

[Dalboy]

Good to see you picking this project up again, the long break should provide a new stimulus once you have got your head round the 'to do' list for what must seem a never ending endeavour.

Awaiting some more metal for it
I still need to run the farm boy at the moment it is in a display case. At the wife's request so it makes it easier to dust and not break anything on it.

 

[Cabinetman]

What? You haven’t had that superb thing running yet??

 

[Dalboy]

What? You haven’t had that superb thing running yet??

I know, I will get to doing it when I can afford three AA batteries as that is all it needs to run it

Seriously I will get around to it. Trying to do a little tidy up in the garden for winter. I have also started the cylinders for the loco. The first set of castings were wrong and full of blow holes, At least this set are OK, spent the time just getting a reference surface machined, so I have somewhere to measure from.

I will get some photos of them tomorrow as I need to double check some of the measurement which I got wrong on the first set (What is it they say measure twice machine once. That mistake cost me £60+ for the two)

 

[Dalboy]

Got back onto the cylinders of the Rob Roy as I stuffed up some measurements on the first set.


Put in the mill vice and all I have achieved is to rough out some surfaces so that I have some reference flats to work from. They are still oversize at this stage but have got one squared up ready for some serious milling. I have used a small bit and light cuts as I am holding them on rough castings to start with, which you can see by the one in the vice.


At least I will have some nice clean surfaces to work from and get a decent grip on so I can use a fly cutter for a better finish

 

[Dalboy]

While waiting for some HSS tools to complete the cross head I thought I would finish the coupling rods which I started ages ago but stopped because I needed to sort out how I was going to proceed. Now that I have done more machining on other parts, I felt comfortable to get them finished.
How I left them


Where I am today but with a small bit more to do.



Lower set complete and bushes installed.