[Scnell Gelb]

aftCG
Thanks for taking the time to add to the discussion - particularly because of your expertise in bearings/loads.
Intuitively many of us liked the roller bearing solution for the IMS but were warned off by the ex-Timken fellow Ed who occasionally contributes.
You mention the DOF oil supply source/pressure loss to camshaft bearings as a problem. If that source was abandoned & the oil supply came from the same source that LN use for their plain bearing Solution, would that help in your view? I ask because that may be an easy mod for those running DOF to make.But did you realise Pedro reduced the diameter of the oil feed in the IMS cover plate? It was a large reduction in flow rate.
I have an LN chromolly driveshaft as an upgrade and share your confusion about why a mild steel shaft is inadequate. Looking at the construction of the oil pump ,you would think that was the weak link ,not the steel drive shaft.
In your study of the oil circulation system, did you ever figure out why/where the Factory diagram is wrong ? Many of us would love to know !
Thanks again for your contribution.