Or a different design altogether or some type of seal at the interface. Pretty clear to me the actual manufacturer up to First Brands really is not in a receptive mode.
It flexes. You can word it all you want, it flexes, I’ve seen it. Not a theory. You have a theory. Wcw was too heavy handed on that, means nothing to keep on bending the ears, don’t need a vise. Takes a little care. I thought you understood the lever better. Think about it more.
Agree. Hence I wrote what I wrote. Some kind of seal. It needs to be oil path proof. And if the same form (shape, size) cant be improved and controlled, change the design. No way would/could "Fram" do this in the last few years without some $ and the correct team.
Like I said, the leaf spring (if designed right) is too stiff around the base for force on the ears to make it flex of any significance in the middle between the ears when assembled in the can. It's possible that a leaf spring could be ill-designed and made of too thin of metal and shaped in a way to be too flexible in areas it shouldn't be. The correct design is to make the center area stiff and the ears flexible without deforming permanently and losing spring action.
Yep ... I was just clarifying that even with a gasket, if it's not designed well and manufactured right it still may not work right. That's why I pointed out that even with the relatively firm fiber gasket used on the OG Ultra, if the leaf spring was stamped all warped and ruffled it still might not have sealed. It was stamped well even when using the gasket, as the photos show. The nice part of that OG Ultra leaf spring with gasket design was the "double seal" aspect as I described.
No the gaps don’t close up more with more pressure, just like you say, the lever is making the center rise. Even if the leaf was 1/4” thick steel the middle will be trying to bend up. It may not be much, but it will. We are talking in microns. .010” gap is 254 microns, if it bends to .013” it’s 76 more. Standard notebook paper is around 125 microns more or less.
I think a simple way would be to make a gasket that would sit where I've put the red in the photo below. Make a silicone ring (nitrile would work too) that has an ID that fits snug on the OD of the part that goes down into the end cap so the gasket doesn't come off during later manufacturing process. All they would need to do is stamp out silicone rings and install it on the leaf spring before it goes into the end cap. Part of manufacturing the leaf spring assembly would be to install the gasket on the leaf spring so it's a completed assembly ready for installation into the end cap during production. The Fram Racing Filter has something similar to this. It would be simpler than building in a fiber gasket like was used on the OG Ultra.
That's what I said before. Yes soft. BUT still can't be like a Ruffles tater chip.
Yeah, I know that's also what you said before, but this point was wrt to the RTV idea. A gasket would be simpler, and no risk of any glue/RTV coming loose in use.
Like said before, it depends on the design of the leaf spring shape. If it's not designed right it won't have a very high moment of inertia to loads. Study up on structural moment of inertia - link below. I-beams are designed the way they are so they are stiff in the direction that the loads are carried.
I think they should be in talks with Fleetguard or Donaldson to take over can production. It's not like they had a huge list of part #'s, it's something one of those two could handle.
This part I'm the furthest from. High level, no idea.
