I am considering building a version of the Ian Bradley Electrically Heated Heinrici engine published in ME 3741 to 3751 in five parts (1984/5). I have sourced the torque tube bearing from the original supplier that Ian Bradley suggested back in 1985. My question is how is the connecting rod (Part O in Fig 31 ME 3747 p 214 connected to the outer of the eccentric bearing.
The drawing shows two holes which would be radial to the bearing outer and a suggestion that a pinch bolt causes the end of the conrod to grip the bearing outer race when it is tightened.
Is there something, not mentioned in the article? Do torque tube bearings (Ransome and Marles type CA1 1 9/16" bore by 2" OD by 9/32" wide) have protruding lugs on the outer that could fit into the radial holes? The size of these holes does not seem to be dimensioned in the plans.
Has anybody other the the author built an engine to these plans?
Bob