V-twin engine from scratch - yet another interpretation of how (not) to build a

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sorveltaja:
Some progress on crankcase:

In the middle are the 5mm(0.196") alum crankcase walls, that have 13mm(0.511") holes bored for bearings. Smaller holes are for supporting rods. I'll make them after those two plates on the sides are fitted in place.

I'm going to make a new crankshaft, that uses split end -connecting rods. Don't remember what it was called for, but anyways same kind of, that is used on multiple cylinder inline- and V-engines. That way it's possible to support the crankshaft at both ends.

Rob.Wilson:
Looking good , one to keep an eye on , sorveltaja do you do any drawings for your engines or do you design as you go ?

Regards Rob

sorveltaja:
Rob, I've made some basic sketches, and modify them if(when) needed. Non-critical parts are done without too much precision, so that's why I need to mod the drawings as the project goes.

After all, most important thing is to get all the parts to fit together ::).

sorveltaja:
Plates fitted in place:

It was more difficult to match those two parts, than I thought.

Angle is right, but I removed too much material, leaving an ugly gap between them:

Fortunately it isn't too crucial thing. Making the two crankcase walls parallel is more important.

I made the backstop for the lathe spindle, so the two supporting rods can be made equal length.

sorveltaja:
That gap bothered me, so I had to do something about it:

It's not only cosmetically better ::), but the brass bar also adds more meat for the cylinder screws.

On the above pictures, supporting rods are in place. Construction feels now quite robust.

Next thing to do is a new crankshaft.

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