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Message: Re: and let's remember that my retrofit degraded severely in 39k miles
Changed By: Pedro (Odessa, FL)
Change Date: January 19, 2017 11:14AM
Re: and let's remember that my retrofit degraded severely in 39k miles
Change Date: January 19, 2017 11:14AM
Re: and let's remember that my retrofit degraded severely in 39k miles
The problem that you encountered is what we've found more than half a dozen times.
The hybrid-ceramic bearing is NOT a permanent solution for this application.
Hybrid and full ceramic bearings are very low friction bearings that get replaced every couple of races in Karts and Motorcycles.
The problem in our specific application with these bearings is the disparity in hardness between the ceramic balls and the steel races.
After some use, the (hard) ceramic balls start to etch a rut in the (soft) steel races until the rut is deep and wide enough for the balls to move around and make contact.
There y are really glass balls that are very hard but very fragile. Once they start to move around it's inevitable that they will fail.
For our application if you're OK with removing the tranny and replacing the bearing every 30,000 miles or so, then good for you.
I personally believe that the IMS issue needs to be solved once and for all and that's why I highly recommend the DOF.
The DOF uses an OEM steel-on-steel bearing that when properly lubricated should last the life of the vehicle.
There has never been a DOF failure that I'm aware of and there are vehicles with well over 125,000 logged miles.
with the DOF.
BTW, the OEM application is correct. I don't believe that it was a poor design. I believe that the manufacturer of the bearing (seals in particular) delivered a product that allowed oil past the seals and you know the rest of the story.
Again, they fail when the seal is compromised and the lifetime grease leaks out, leaving the bearing without the proper lubrication every bearing needs.
Happy DOF'ing,
Pedro
The hybrid-ceramic bearing is NOT a permanent solution for this application.
Hybrid and full ceramic bearings are very low friction bearings that get replaced every couple of races in Karts and Motorcycles.
The problem in our specific application with these bearings is the disparity in hardness between the ceramic balls and the steel races.
After some use, the (hard) ceramic balls start to etch a rut in the (soft) steel races until the rut is deep and wide enough for the balls to move around and make contact.
There y are really glass balls that are very hard but very fragile. Once they start to move around it's inevitable that they will fail.
For our application if you're OK with removing the tranny and replacing the bearing every 30,000 miles or so, then good for you.
I personally believe that the IMS issue needs to be solved once and for all and that's why I highly recommend the DOF.
The DOF uses an OEM steel-on-steel bearing that when properly lubricated should last the life of the vehicle.
There has never been a DOF failure that I'm aware of and there are vehicles with well over 125,000 logged miles.
with the DOF.
BTW, the OEM application is correct. I don't believe that it was a poor design. I believe that the manufacturer of the bearing (seals in particular) delivered a product that allowed oil past the seals and you know the rest of the story.
Again, they fail when the seal is compromised and the lifetime grease leaks out, leaving the bearing without the proper lubrication every bearing needs.
Happy DOF'ing,
Pedro
Original Message
Author: Pedro (Odessa, FL)Date: January 18, 2017 02:49PM
Re: and let's remember that my retrofit degraded severely in 39k miles
The problem that you encountered is what we've found more than half a dozen times.
The hybrid-ceramic bearing is NOT a permanent solution for this application.
Hybrid and full ceramic bearings are very low friction bearings that get replaced every couple of races in Karts and Motorcycles.
The problem in our specific application with these bearings is the disparity in hardness between the ceramic balls and the steel races.
After some use, the (hard) ceramic balls start to etch a rut in the (soft) steel races until the rut is deep and wide enough for the balls to move around and make contact.
There are really glass balls that are very hard but very fragile. Once they start to move around it's inevitable that they will fail.
For our application if you're OK with removing the tranny and replacing the bearing every 30,000 miles or so, then good for you.
I personally believe that the IMS issue needs to be solved once and for all and that's why I highly recommend the DOF.
The DOF uses an OEM steel-on-steel bearing that when properly lubricated should last the life of the vehicle.
There has never been a DOF failure that I'm aware of and there are vehicles with well over 125,000 logged miles.
BTW, the OEM application is correct. I don't believe that it was a poor design. I believe that the manufacturer of the bearing (seals in particular) delivered a product that allowed oil past the seals and you know the rest of the story.
Again, they fail when the seal is compromised and the lifetime grease leaks out, leaving the bearing without the proper lubrication every bearing needs.
Happy DOF'ing,
Pedro
The hybrid-ceramic bearing is NOT a permanent solution for this application.
Hybrid and full ceramic bearings are very low friction bearings that get replaced every couple of races in Karts and Motorcycles.
The problem in our specific application with these bearings is the disparity in hardness between the ceramic balls and the steel races.
After some use, the (hard) ceramic balls start to etch a rut in the (soft) steel races until the rut is deep and wide enough for the balls to move around and make contact.
There are really glass balls that are very hard but very fragile. Once they start to move around it's inevitable that they will fail.
For our application if you're OK with removing the tranny and replacing the bearing every 30,000 miles or so, then good for you.
I personally believe that the IMS issue needs to be solved once and for all and that's why I highly recommend the DOF.
The DOF uses an OEM steel-on-steel bearing that when properly lubricated should last the life of the vehicle.
There has never been a DOF failure that I'm aware of and there are vehicles with well over 125,000 logged miles.
BTW, the OEM application is correct. I don't believe that it was a poor design. I believe that the manufacturer of the bearing (seals in particular) delivered a product that allowed oil past the seals and you know the rest of the story.
Again, they fail when the seal is compromised and the lifetime grease leaks out, leaving the bearing without the proper lubrication every bearing needs.
Happy DOF'ing,
Pedro