La venta termina hoyObtén un 30% de descuento en cualquier curso (excepto paquetes)
Termina en --- --- ---
Publicaciones del foro
Cursos
Blog
Artículos técnicos
Hable sobre construcción de motores aquí. Nuevos productos, preguntas complejas o muestre su trabajo. Si se trata de construcción de motores, bienvenido.
= Hilos resueltos
Hey guys, just chasing some opinions here.
I’ve had a set of rods resized recently (big end bores ~47 mm). After machining they were left to cool and stabilise, then measured in a ~20 °C room. Measuring with a bore gauge, they’re consistently coming up about 4-6 microns undersize, with one rod closer to 8 microns under. Shape-wise they look good - no obvious taper or ovality issues.
I’ve measured the crank and a set of new bearings and, on paper, the clearances should still end up in spec. That said, before I go and sacrifice a set of bearings to measure installed ID, I wanted to sanity-check this with others.
At this level of undersize, is there any real concern around bearing crush or distortion, or is this generally considered a non-issue in practice? Just trying to work out if I should send them back now, or whether this is well within safe tolerance.
Appreciate any thoughts or real-world experience. 👍
