It was at this point I started to have a few of those "Groundhog day" sort of moments!
Having worked out how to make a shaft that fit's over the gearbox splines, has a bearing at the other end and also has a sproket in the middle, I proceeded to make a mess of things 3 times!
Attempt 1... Having just checked the bearing fit I forgot to tighten the tailstock back up for the final cut! The result was some nice deep gouges! (not seen in this pic as I trimmed some more off to check which tools cut best)
Attempt 2... Counted twice what I should of done and took too much metal off making the bearing a loose fit!
Attempt 3!!! All was going well until I broke a small drill bit off about 1/2 inch in!! No way of getting it out!
Attempt 4... In it's raw state
And attempt 4 in it's finished (and correctly sized) state.
Not a perfect finish inside, but the measurements are right.
The splined bit pressure fitted, a nice tight fit.. It will be welded on then the welds and overhang will be tidied up on the lathe.
And finally with the bearing, I still need to buy the sprockets but as they will need boring out to fit the shaft I could get on and make this part..
I have just started making a sleeve to fit over the TB input shaft... Let's hope I only need to make it once