Hi,
I am approaching a big end rebuild on my JAP LTOWZ engine (1000cc water cooled V Twin from the 30s). The original big end bearing was a crowded roller bearing (loads of rollers no cage) but I would like to modify this to add a light alloy cage.
The cage then is an annular ring with a series of rectangular slots to take the rollers.
Phil Irving in his seminal work “Tuning for Speed” recommends milling out the slots with a woodruffe cutter then filing the ends square but I am afraid I don’t have it in me to do all that filing.
Do we have any alternative techniques for forming the cages without the filing? I have milling (manual and CNC) and turning of course.
I have wondered about making the cage in two pieces – a plain ring on one end to close off all the slots, but am not sure about how to secure it.
Ian