Hi all thanks for your comments, it makes a project
like this a heap more fun especially as I am nearly at the end of the build.
JohnL yes I put the stern tube in on the weekend, went in beautifully with perfect alignment. Finished welding just after dark. Came back on Sunday to tackle the prop skeg and discovered that one of my alignment tacks inside had popped. After spending a couple of hours with blocks and jacks and levers and sweat and a whole shipfull of rude words....I ground three quarters of the weld back off, realigned and by Sunday dark I was where I thought I was the same time the previous day. The gearbox
and shaft flanges kiss and that is before any engine mount adjustment. I must say that I had a very large amount of strings and marks and every other bit of science and supersticion to try and help. I had a heap of trouble rebuilding the stern tube on my other boat (amongst which the "professional welder" put so much heat into it that it was like a bannana. The prop shaft was sitting in it with its bearings and held it sort of straight I now have an automatic bearing ovaling machine !!) I now do ALL my own welding. I would have done the turning but our lathe here is just not heavy enough and a little bit to "chinese" to take 80 mm OD hollow bar. Lets just say I couldnt bring myself to stand in front of it.
Wheels the box is a ZF/Hurth 15 M dropped output shaft. I wanted the MA which has an 8 deg down angle, but it was harder to get and a lot more expensive. As it is the engine has 6 deg down aft on it which should not cause any problems. I originaly built the engine bed for a second hand volvo
I have, but couldnt get a gearbox
at a humane price
for it. Thats why the bed has the angle welded on top.
I II post some pictures of the finished instalation.....hopefully next weekend