Thanks for your interest Dave you were the only one to reply so I guess your the only one watching.
Hi Chaps:- if any one does read it.
I've not updated this thread for a while I did get distracted with a couple of other projects and I was a bit put off from updating it because of the problems I was having with photobucket, but now that I've gone add free its making the process far easier.
I have done some work on it and I'm planning too have a intense period of activity on it.
So her's the update
The main driving axles are made fro 3/4" ground mild steel bar, the first job was rough cut them to length.
Face them all off so that they were all exactly the same length.
Using a collett centre drill.
Then between centres turn down the end for a nice close fit in the wheels
I then drill down the ends and cross drilled oiling way this way to oil the bearing all I have to do is squirt oil down the centre of the axle. sorry no pictures of this.
Next turn up and fit the driving pins for the wheels and loctite them in the wheels
Axle boxes Made from a chunk of cast iron
1st job square the chunk up to size
Cut each axle box off from the chunk
In the four jaw face off to length.
Then in the mill I found the centre of each box and put in a centre drill, and using a woble bar centred the box back up in the four jaw and drill out and reamed 3/4"
Then turned up 3/4" mandrell
Transferred the chuck over onto the spin indexer and milled the groove for a nice slide fit on the frame hornblocks this way every thing will be concentric keeping the axle boxes in line.
Radius off the groove this is so the axles will roll on the track curve and humps and bumps.
This is the axles and axle boxes assembled with the springs.
Then using a quartering jig assemble the wheels:- its important for the wheel coupling that each set of wheels are quartered exactly the same
I post a picture of the wheels in the frame at a later dat.
I'm currently building the pony truck this is being fabricated from laser cut parts.