Derek has kindly agreed to give us a series of articles as he works through his latest project - please read on!
3” Burrell, Single Cylinder General Purpose Agricultural Traction Engine
Having recently bought a part built traction engine, I am now in the process of working my way through the items that remain to be manufactured or completed.
The making of the complete Connecting Rod from stainless steel
Rough & finish turning the connecting rod from 1” dia stainless steel.
Drilling and reaming the small end bearing hole.
So Far, So Good!
Slitting the adjusting wedge clearance groove
Big end bearing strap, bent from 20mm x 8mm stainless steel.
The bolt was just long enough to keep it open in the vice.
Various stages of making the strap.
Slitting and soft soldering the big end bearing bronze.
Turning the bearing.
Setting up the slitting saw to centre line of the dividing head.
Machining the bearing outside profile in relation to the soldered joint.
Drilling the two 3/32” dia bolt holes.
Slitting off the small part of the adjusting wedge.
The front half of the big end bearing, with the small wedge glued into place.
Rough milling the large adjusting wedge from the same block
(therefore ensuring that both angled faces are the same).
Ready to be cut off from the block.
The completed wedge.
The conecting rod complete
Making the Spectacle Plates from 1/8” M.S.P
Cutting out the two rectangles form the sheet plate.
Rough bending around the steel former.
Rough cutting off the surplus material, prior to completing the form.
Finishing the form, using heat to get around the corners.
The finished formed plate.
Milling the walls to ½” high.
Rough Grinding the Top face and corners to remove the “Hammer Rash”. (I was only using a copper faced hammer.)
Milling the sides to overall width and to be a snug fit between the horn plates.
The completed plate. The slots and holes will be machined in later.