Quote:
Originally Posted by deansbimmer
A word of caution to those considering mixing ACL H and HX shells to mimic BE clearances. Be aware that ACL, like most manufacturers, measure and bin their shells to achieve sets that fall within their specified combined clearance. As a result, we've seen a significant amount of HX shells measure the same as H shells, and vice versa.
As a result, one cannot simply buy the two sets, blindly mix the shells, and assume that they've just created the ideal "extra clearance" set. They need to be individually measured, and the typical micrometers are not precise or consistent enough for that task. A proper drop mic and stand are required (shown below), and is similar to the setup used by BE and other qualified engine builders. We match them this way, and the set sold by Lang would likely fall into the category of properly matched sets.
|
Some apparently are happy imagining they are matching BE bearings by mixing and matching without measuring.
Facepalm