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Message: IMS - my theory
Changed By: Roger987
Change Date: December 12, 2013 10:50PM
IMS - my theory
Change Date: December 12, 2013 10:50PM
IMS - my theory
Disclaimer - I'm not an engineer; I don't even play one on tv. And although there's a train set in a box somewhere in my basement, it's been many, many, decades since I've operated it.
I agree entirely with the proposition that the IMS bearing needs lubrication. After all, it was packed with grease when brand new.
Over time, the seals (sometimes/often/always?) fail, allowing the grease to escape. The grease is replaced by engine oil which sneaks in past the same seals that allowed the grease to escape. I don't know whether the oil and grease high-5 each other as they migrate past the seal - maybe they're pals, maybe they aren't.
So, in time, the bearing is being lubricated not by grease, but by engine oil. Change the engine oil frequently, use good oil (no, I'm not going THERE), and the bearing will likely last longer, based on the premise that the oil in the bearing will, over time, be 'refreshed' with newer oil. Otherwise, that oil will become, as Pedro says, 'rancid'. And rancid is bad. The very word sounds bad. 'Rancid'.
Removing the outside seal to the bearing (new or old, ceramic or steel) will provide splash lubrication. But, splash lubrication probably isn't sufficient.
Pedro's clever DOF provides a stream of oil to the bearing (with the seal removed) which will undoubtedly be superior to 'splash' lubrication.
So far, so good.
BUT....
Using the DOF requires removing the seal. As a result, no longer are the bearing balls enclosed in a (more or less) sealed area, lubricated by the (more or less) trapped engine oil (formerly grease).
Instead, they rely on the DOF for their oil, which is probably fine, as long as the DOF is working as it should. BUT, if for any reason, the DOF should stop providing a stream of oil (failure reasons? - I dunno - a wayward piece of metal filings gets stuck in the lubrication exit hole, the line gets kinked/broken, plugged, fails, your guess is as good as mine), and you're left with splash lubrication, which is NOT going to do the trick in the long haul.
So... change the oil lots and hope that, if the grease leaves the IMS bearing, it's replaced by more or less fresh engine oil, or drop a couple grand, and install the DOF and hope to heck it doesn't fail. Because, if it does, you've already removed the seal, so you're not going to have the benefit of the IMS bearing spinning in more or less contained oil - you're stuck with splash lubrication.
On a positive note, speaking of splash, do most/many/some of you remember Daryl Hannah in 'Splash', or, for that matter, 'Roxanne'. Yeah, my thoughts exactly.
Cheers.
I agree entirely with the proposition that the IMS bearing needs lubrication. After all, it was packed with grease when brand new.
Over time, the seals (sometimes/often/always?) fail, allowing the grease to escape. The grease is replaced by engine oil which sneaks in past the same seals that allowed the grease to escape. I don't know whether the oil and grease high-5 each other as they migrate past the seal - maybe they're pals, maybe they aren't.
So, in time, the bearing is being lubricated not by grease, but by engine oil. Change the engine oil frequently, use good oil (no, I'm not going THERE), and the bearing will likely last longer, based on the premise that the oil in the bearing will, over time, be 'refreshed' with newer oil. Otherwise, that oil will become, as Pedro says, 'rancid'. And rancid is bad. The very word sounds bad. 'Rancid'.
Removing the outside seal to the bearing (new or old, ceramic or steel) will provide splash lubrication. But, splash lubrication probably isn't sufficient.
Pedro's clever DOF provides a stream of oil to the bearing (with the seal removed) which will undoubtedly be superior to 'splash' lubrication.
So far, so good.
BUT....
Using the DOF requires removing the seal. As a result, no longer are the bearing balls enclosed in a (more or less) sealed area, lubricated by the (more or less) trapped engine oil (formerly grease).
Instead, they rely on the DOF for their oil, which is probably fine, as long as the DOF is working as it should. BUT, if for any reason, the DOF should stop providing a stream of oil (failure reasons? - I dunno - a wayward piece of metal filings gets stuck in the lubrication exit hole, the line gets kinked/broken, plugged, fails, your guess is as good as mine), and you're left with splash lubrication, which is NOT going to do the trick in the long haul.
So... change the oil lots and hope that, if the grease leaves the IMS bearing, it's replaced by more or less fresh engine oil, or drop a couple grand, and install the DOF and hope to heck it doesn't fail. Because, if it does, you've already removed the seal, so you're not going to have the benefit of the IMS bearing spinning in more or less contained oil - you're stuck with splash lubrication.
On a positive note, speaking of splash, do most/many/some of you remember Daryl Hannah in 'Splash', or, for that matter, 'Roxanne'. Yeah, my thoughts exactly.
Cheers.
Original Message
Author: Roger987Date: December 12, 2013 10:42PM
IMS - my theory
Disclaimer - I'm not an engineer; I don't even play one on tv. And although there's a train set in a box somewhere in my basement, it's been many, many, decades since I've operated it.
I agree entirely with the proposition that the IMS bearing needs lubrication. After all, it was packed with grease when brand new.
Over time, the seals (sometimes/often/always?) fail, allowing the grease to escape. The grease is replaced by engine oil which sneaks in past the same seals that allowed the grease to escape. I don't know whether the oil and grease high-5 each other as they migrate past the seal - maybe they're pals, maybe they aren't.
So, in time, the bearing is being lubricated not by grease, but by engine oil. Change the engine oil frequently, use good oil (no, I'm not going THERE), and the bearing will likely last longer, based on the premise that the oil in the bearing will, over time, be 'refreshed' with newer oil. Otherwise, that oil will become, as Pedro says, 'rancid'. And rancid is bad. The very word sounds bad. 'Rancid'.
Removing the outside seal to the bearing (new or old, ceramic or steel) will provide splash lubrication. But, splash lubrication probably isn't sufficient.
Pedro's clever DOF provides a stream of oil to the bearing (with the seal removed) which will undoubtedly be superior to 'splash' lubrication.
So far, so good.
BUT....
Using the DOF requires removing the seal. As a result, no longer are the bearing balls enclosed in a (more or less) sealed area, lubricated by the (more or less) trapped engine oil (formerly grease).
Instead, they rely on the DOF for their oil, which is probably fine, as long as the DOF is working as it should. BUT, if for any reason, the DOF should stop providing a stream of oil (failure reasons? - I dunno - a wayward piece of metal filings gets stuck in the lubrication exit hole, the line gets kinked/broken, plugged, fails, your guess is as good as mine), and you're left with splash lubrication, which is NOT going to do the trick in the long haul.
So... change the oil lots and hope that, if the grease leaves the IMS bearing, it's replaced by more or less fresh engine oil, or drop a couple grand, and install the DOF and hope to heck it doesn't fail. Because, if it does, you've already removed the seal, so you're not going to have the benefit of the IMS bearing spinning in more or less contained oil - you're stuck with splash lubrication.
On a positive note, speaking of splash, do most/many/some of you remember Daryl Hannah in 'Splash', or, for that matter, 'Roxanne'. Yeah, my thoughts exactly.
Cheers.
I agree entirely with the proposition that the IMS bearing needs lubrication. After all, it was packed with grease when brand new.
Over time, the seals (sometimes/often/always?) fail, allowing the grease to escape. The grease is replaced by engine oil which sneaks in past the same seals that allowed the grease to escape. I don't know whether the oil and grease high-5 each other as they migrate past the seal - maybe they're pals, maybe they aren't.
So, in time, the bearing is being lubricated not by grease, but by engine oil. Change the engine oil frequently, use good oil (no, I'm not going THERE), and the bearing will likely last longer, based on the premise that the oil in the bearing will, over time, be 'refreshed' with newer oil. Otherwise, that oil will become, as Pedro says, 'rancid'. And rancid is bad. The very word sounds bad. 'Rancid'.
Removing the outside seal to the bearing (new or old, ceramic or steel) will provide splash lubrication. But, splash lubrication probably isn't sufficient.
Pedro's clever DOF provides a stream of oil to the bearing (with the seal removed) which will undoubtedly be superior to 'splash' lubrication.
So far, so good.
BUT....
Using the DOF requires removing the seal. As a result, no longer are the bearing balls enclosed in a (more or less) sealed area, lubricated by the (more or less) trapped engine oil (formerly grease).
Instead, they rely on the DOF for their oil, which is probably fine, as long as the DOF is working as it should. BUT, if for any reason, the DOF should stop providing a stream of oil (failure reasons? - I dunno - a wayward piece of metal filings gets stuck in the lubrication exit hole, the line gets kinked/broken, plugged, fails, your guess is as good as mine), and you're left with splash lubrication, which is NOT going to do the trick in the long haul.
So... change the oil lots and hope that, if the grease leaves the IMS bearing, it's replaced by more or less fresh engine oil, or drop a couple grand, and install the DOF and hope to heck it doesn't fail. Because, if it does, you've already removed the seal, so you're not going to have the benefit of the IMS bearing spinning in more or less contained oil - you're stuck with splash lubrication.
On a positive note, speaking of splash, do most/many/some of you remember Daryl Hannah in 'Splash', or, for that matter, 'Roxanne'. Yeah, my thoughts exactly.
Cheers.