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Wood and Metal Beam Engine - Part 10

Nigel Taylor

The throw on the eccentric is just 3mm and I need 8mm to work the valve and so I needed some advantage on the lever.

This is my lever arm with 7mm from pivot one side and 21mm the other side.

The slot on the long arm side is so that I can place a bush in the joint and create a sliding joint.


From the underside you can see the bush with a small amount of solder fixing it to the arm.


The pivot is bolted to the wooden frame of the engine. The pivot is made from a piece of brass with a steel pin that is threaded so that the arm can be held in place.


The arm in place. Now need to fix the arm to the valve - for this I'm going to use a small bush and place a bolt through the middle.


Back to Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9 and on to Part 11

If you have made a similar engine and would like to share your experience we would love to hear from you - ed.