As for the 2 phase.. There are a few issues that has a great cause and effect. From crank outwards.. 748 flywheel, spray, needle bearing, starter gears. A machined "tube" to use as a spacer between flywheel and crank nut. As the thread on the crank sits in the area for the spigot bearing, the bearing has to be removed and relocated to the outside of the alt cover. The cover can only be machined to a depth of 7mm, as the thread on the crank is at a depth of 12.5mm. As such, a 8mm wide bearing will protrude 1mm out. The standard bearing width is 10mm. I am making the inspection/ crank turning cover with a 34.98mm dia, 3mm deep recess to accept the standard 10mm wide bearing. Along with a 17.5mm dia bore for the crank spigot. I will be going away from using c/sink screws, as this will pull the inspection cover to where the screws pull it. This may misalign the two bearing bores. A couple of button heads will be used. The crank protrudes out of the cover by 5mm.
I'm seriously impressed by the work, skill and thought that has gone into this project. I look forward to see how it turns out.
It belongs to my son. I'm not sure if he made it, or where he got it from.. It gets used a lot.This is his bike on it. https://www.ducatiforum.co.uk/threads/ducati-st4s-custom-build.68486/page-4#post-1498030
Tried to use the 996 gear but couldn't get it to mesh with starter gear. Measured 996 gear and the 851 gear O/D and the 996 is 4mm wider. Both are 70 tooth... Fitted the 851 gear, perfect fit..
Spacer in place.. Cover fitted [pro temp] with no bearing in place to make it easier to put on and off..
Nicely designed stand .... .... very small footprint and clear access to work from all angles . Like it !
Did you consider just spacering out the alternator case? I do not know how much you had to move it but a 6 or 8mm aluminium plate jigsawed out might have been easier, I think you might have had to extend the gear change shaft and possibly pump impeller shaft
Looking more closely at the photo in that link , and the locations of the mounting bolts - It must have taken a lot of time and effort to find sturdy bolt holes that would give good weight balance ( front / rear ) , and then to work out the stand geometry to match .... .... well done !
It would've needed at least a 15mm thick spacer, which would need to be laser cut, which I dont have access to. The shafts you mentioned would also need extending by that amount some how. Which would put the gear lever too far out and the water inlet and outlets would also be in the wrong positions. As the whole cover would be further away, the alternator wouldn't sit fully over the stator. This would need a 15mm thick spacer between the rotor and flywheel. You cannot space the flywheel out, due to the spragg and starter gear.
