Missed this new one Keith (puter went belly up then I went OS} Im in for the ride too
Printable View
Missed this new one Keith (puter went belly up then I went OS} Im in for the ride too
Hi All,
I have been working on the front bogie wheels - these were turned in the wood lathe out of pine.
I then sketched up and have started to build the sub chasis of the locomotive. This is made from 9mm MDF and pine. I have also made up the wheel bearings and reatainers. These slide into the cutout sections of the chasis.
The second photo shows the wheel configuration on the front end of the locomotive.
My next step will be turning up the axles for the front bogie wheels and also the main drive wheels. The axles will be turned out of 25mm solid aluminium in my metal lathe.
There are also 8 sets of leaf springs for the wheels to be made. So plenty of work to keep me going.
Regards
Keith
Attachment 463861 Attachment 463862
Very interesting and looks like a lot a work. [FUN] :2tsup:
Hi All,
Started turning up the axles of my locomotive.
My design has the axle made out of 25mm aluminium round. The main bearings are 7/8 inch bore and the the bore of each wheel is 3/4 inch. The bores of the bearings and wheels were cut with forstner bits as they give a good quality bore.
Because I have so many axles to machine up - I made up a gauge that allows me to create a sliding fit on the bearing and an interference fit on the bore of the wheel. It's pretty rough - but it works.
Attachment 463927
I machine up and measure using a vernier to get a diameter close to what I want.
Attachment 463928
I then use my gauge to get the sliding or interference fit that I want.
Attachment 463929 Attachment 463930
The gauge makes it much easier than having to remove the work from the chuck or take measurements with the vernier.
Attachment 463931 progress so far.
Regards
Keith
Hi All,
Finished my axles and also made my first set of leaf springs for the front bogie.
Regards
Keith
Attachment 463979
Thanks Master Keith !
I can use that gauge on my automata work ! :):)
Regards,
Gus
Hi All,
I have started to make the main drive cylinders for this loco. I found that if I didn't make them and then position them on the chasis - then I won't be able to work out the position of the boiler accurately.
The cylinders in the photo show the piston shaft end and the back end of the cylinder.
The caps I have made out of MDF. The gland is turned out of aluminium and is a press fit into the end cap. The cylinder is PVC pipe. I have made internal spigots on the caps to ensure the caps locate centrally on the cylinder.
I have also made up the leaf springs for each wheel (once assembled you won't be able to see much the springs as they will be obscured by other components).
Regards
Keith
Attachment 464293
Hi All,
I have been working on the bracket that will secure the cylinders to the chasis.
I cut out 8 pieces of 19mm thick pine to the outside diameter of the cylinder and then sanded to the size using a spindle sander. I then glued and clamped 4 pieces together (4 pieces for each side) Then finished sanding the bore. These form my cylinder brackets. They will be bolted from the inside of the cylinder to the chasis.
Attachment 464482
I have clamped the cylinders in there approximate position to check alignment etc.
Beside my version of the loco is a photo of the original locomotive I am working to. Unfortunately I have limited photos of this locomotive.
Attachment 464483 Attachment 464484
Regards
Keith
There you go Keith I go missing for a while and what do I find another great build in progress from you. The speed you are building this is amazing top workmanship as always which I expect from your work.
Hi All,
Slow work on the loco. Bowls is a pretty big time consumer.
I have been trying to figure out how to do the change in boiler diameter on this loco
Attachment 465311
I have split the PVC pipe and inserted MDF to bring the PVC pipe out to the correct diameter scale for this loco (went from 160 OD pipe to 180mm for the correct scaling.)
Attachment 465312
To get the change in diameter of the boiler - I found an old rubbish bin which had a metal outer skin that was the exact diameter I wanted. I removed the bin internal and cut off the rounded lip. I have now cut pine inserts to fit all around. I will cut and taper these and then insert between the boiler and outer skin. These will then be sanded down and the covered in bodyfiller. Lot of filing and sanding to come.
Attachment 465313 Attachment 465314 Attachment 465311
Regards
Keith
I am surprised that you did not turn the small section to the taper on the lathe then fit it between the two other diameters of the boiler. But then I am sure you thought of that
Keith from the looks of the second picture down [in your last post] it looks oval and not round is this a trick of the camera, this would make for a tricker turning?