Another IMS bearing thread

[mikefocke]

Based on theory until several have survived for many miles and months in the real innards of our engines. Only way you could have confidence that your customers investment would be protected.

If I have a 8% chance of failure with the OEM single row, am I reducing risk below that figure by installing XYZ fix? Until I can answer that question affirmatively based on data ....

[Jamesp]

I didn't realize you were involved in designing an approach to fix this. What redesign approach were you involved in, and what engineering principles and testing and verification requirements did you employ? I'd like your opinion on going forward with the understanding my only customer is me. This is just a toy that may become a DD.

I went with the original bearing design because I could not find actual bearing load data to perform a meaningful L10 calc. Estimating the bearing load data makes the calculation worthless - just a guess. So I trusted the Germans on that one.

For the "test and verification program" (on one car!) I put off installing a new flywheel because I'm going to replace the flywheel and bearing in about 15 - 20K and assess the viability of the grease after a year. I have an identical control bearing I will cut open at the same time to compare lubricant degradation in the installed bearing. I'll let this forum know how that turns out, but it will be awhile.