A busy and quite difficult morning. You may remember that I chopped a complicated two throw crankshaft out of a solid piece of stock rather than accept the horrible little built-up shaft that was already partially in place. It was too tight a fit so this morning the first job was to find out why. I stripped it out and found that the shaft was fine, it was the fit of the two standards and possibly the centre bearing that it is mounted in that is at fault. I spent a long time fitting and refitting the outside standards until I was sure they were a good fit.
That being the case my next suspect was the centre, main bearing. In order to prove this I set to to take the centre bearing support out, refit the crankshaft on its standards and see what it was like then. I suspected that I had to lower the main bearing housing slightly to ease the fit. If you look at the images you'll see that what I found was that one of the brass studs that holds the centre standard down was broken. It took me half an hour to get it out but the last pic shows I was successful and where I was at closing time.
Good stuff but not easy and I haven't even looked at the drawings. I shall finish chasing this rabbit tomorrow and then have a look at the drawings.... A stressful morning and my shoulder hurts but so far successful and good progress.
