Been busy around with other hobby's, work etc etc!
For my single-cylinder engine (55cc), I am working on making a new crankshaft (ehm crankwebs). The whole is carried out in material C45. As shown in the picture, the whole is pressed. This according to the same method as my previous crankshaft (see picture).
I want to turn and mill the crankwebs first. And then one of the crankweb realize the fit of the drive shaft. This first cheek I want to squeeze in one of the drive shaft.
Then I mount the crankpin for the bigend. Where then the second crankweb is compressed linear as possible.
To get the both driveshafts concentric, I had to turn the fit for the second drive shaft of the second crank cheek.
This I also applied for the previous crankshaft, this worked out well. However, the crankwebs were made of aluminum. Which caused a not so good fit between the crank cheeks and drive shafts. But were strong enough.
Given this reason, I am now going to use C45. And it also ensures an even stronger / stiffer crankshaft (Supercharge ready??
). I want to secure the mounted axle in addition to the press fit. I am thinking to give the light a weld (TIG) or to braze.
My question is, what is sensible? Only apply a press fit? Or welding / soldering? The material could possibly deform and introduce additional stresses in the material.
Thanks in advance for thinking along!