Another IMS bearing thread

[kjc2050]

Originally Posted by Walter White

"Why not just edit the post to include the pictures??"
If you know how please let me know. I can't find any way to either delete or add photos to a post once it has been posted.

Click "Edit;" click "Go Advanced;" edit post and add pictures as needed.

[Jake Raby]

Carry out these experiments within an engine and you'll see that your observations change.

Over time we have found that not just the strength of the cage matters, but also the weight of the balls and the cage. This is because the inner race is parked and the outer race is rotating, among other things.

Of course, the only real solution to the issue is removing the balls and the cage completely from the equation.

[Walter White]

Originally Posted by Jake Raby

Over time we have found that not just the strength of the cage matters, but also the weight of the balls and the cage.

That is why I haven't tried PEEK or PTFE cages with steel balls. On the other hand, the J and W type cages both have a track record with the OEM steel ball IMS bearing.

[Jake Raby]

Don't limit your possibilities by what you **think** will work. All too often I find the things that prove themselves are either the opposite of what I thought would work or they were never intended to work as explained by others.

Spinning that bearing unloaded really isn't proving much, because the dynamics change with vibrations imposed by the engine and the timing chains as well as the rapid acceleration and deceleration of the engine. There's a reason why lots of IMSBs fail on the track just after someone zings an engine from a missed shift.

Really figuring this out requires sacrificing engines.

[thom4782]

Originally Posted by Jake Raby

Really figuring this out requires sacrificing engines.

Didn't Elton John sing a ballad about Sacrifice?

[Jake Raby]

I've sacrificed an engine in less than one minute proving IMS related components and theories. That was a 4,400.00 prototype part inside of an engine that cost 12K to build.

That year we spent over 100K on development, so don't anyone think that you can solve these issues by spinning up an IMS shaft with a dremel tool, or a lathe head.

We are very thrifty doing every single part of the work ourselves from building the engines built with used parts and etc and we still spend a minimum of 50K per year on this stuff, even buying things at wholesale or manufacturing them from scratch. If you want to play you must pay.

Or you just steal someone else's idea, call it your own and advertise the hell out of it until you make a few people believe that it actually works. You'll sell a few but you'll never get the components into circulation, because the distributors won't believe the BS and you won't pass their stringent QC inspections.

True development is part of the game at this level. It takes years and will consume your life.

[BYprodriver]

As Carroll Shelby said: "Ok now break the $hit out of it!"