Hello everyone. My name is Mario and i am writting from Spain.
Couple of months ago I had an issue with my 2015 Classic 500's cranckshaft. I had to replace it and decided to fix everything by myself. Dismantled all the engine parts, and purchased a new cranckshaft assembly. I am sharing some pictures so you can understand better my questions. All the pictures i mention below, are in this link:
https://drive.google.com/drive/folders/1YRBsDuDa9L9ddeN9ZZ5E5sYVl6dyhNKI?usp=sharingImagen 001.
This are the 2 cranckshafts assemblies I have. The old one I removed from the engine and the new one, which its inside the cranckcase.
https://drive.google.com/file/d/1K453g1NzK48dxmof6F-OAerEio4mhIPJ/view?usp=sharingImage 002.
The old connecting rod small end comes with a sleeve, which i guess its function is friction reduction among the connecting rod and the piston wrist pin.
https://drive.google.com/file/d/1jL_s5CHaE9UZfWabs0xUnhuEF1hgFBzx/view?usp=sharingImage 003.
Assembly of old connecting rod, sleeve and piston wrist pin. As you see, the diameters match perfectly and there is no play between the parts
https://drive.google.com/file/d/1heNGvYslJhIK15icg-PMUFcq5mhVVeGW/view?usp=sharingImage 004.
Old connecting rod small end without the sleeve. You can see the gap/play existing with only the piston wrist pin. So sleeve is needed.
https://drive.google.com/file/d/1N6ZsOMTRkxte8xWi6f7zXWqVrnVCLifV/view?usp=sharingImage 005.
This shows the new connecting rod. Its small end diameter is smaller than the old connecting rod one, so there is no space to fit the sleeve.
The piston wrist pin fits perfectly in that diameter without any need of a sleeve. My question is about it: do i need always to use a sleeve? or in this case, the new connecting rod, as it fits perfectly without any play, can be used without sleeve and won't it generate any incompatibility among materials, excessive frictions,...?
https://drive.google.com/file/d/1WA6ZozOvxOgKyreQpxDKmsco8dfqoJ0X/view?usp=sharingExtra video.
I share this video to see everything i am traying to ask "in motion".
https://drive.google.com/file/d/19cLKfFIJbJMEBdlUd9guhcygCI-PCeOY/view?usp=sharingSo, summarizing... Is that sleeve needed to prevent issues, or is it perfectly acceptable to use a connecting rod without sleeve.
Thanks!