Well Madmodders
I've been busey making the motion linkage, this is mainley made from 1/8" hot rolled mild steel plate. The work consisted of cutting the links out drilling the holes rough milling and filing to shape, nothing realy exiciting. The only thing to be carful with is the fact the links come in pairs and the hole centres for each pair of links have to be exactly the same, the easyest way to do this is to mark out and drill the holes in one link, in the other just drill one then fasten the two together with dowel, and drill the rest of the holes, that way they must be the same.



With the lifting link as well as two holes there is a slot for the lifting block to slide in, this slot was first chain drilled, then milled out with a slot drill, the corners were squared out with a file, for a nice sliding fit on slip gauges, the lifting block was milled to the same size as the slips.

The valve link was made out of 1/4" sq mild steel, again they come in a pair with matching hole centres, the holes were drilled using the same procedure.
This is one of those jobs where you have to read the drawing carfully, otherwise you end up putting the holes in the wrong side and cutting bits out where you don't want them to be cut out. Only scrapped one off

The slots were cut out witha 1/8" slot drill, the slot having first been chained drilled out with a 7/64" drill.


These are the links the valve link on the right is the scrapper spot the deliberate mistake.

And this is how they will fit together with the eccentric link.

It's quite enjoyable doing these links only 3 more to do.
Have fun
Stew