Needle or Bronze beariing ??????????????????????

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Model T Ford Forum: Forum 2011: Needle or Bronze beariing ??????????????????????
Top of pagePrevious messageNext messageBottom of page Link to this message  By Shane Ball on Tuesday, December 06, 2011 - 04:24 pm:

I am installing the new style pinon bearing on my drive shaft and see where some like the new style bearing and some dont. Should I use the bronze bearing or the new needle type for the upper drive shaft. Thanks - Shane


Top of pagePrevious messageNext messageBottom of page Link to this message  By jack daron-Brownsburg,In. on Tuesday, December 06, 2011 - 04:26 pm:

Bronze,no advantage to the needle there.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Aaron Griffey on Tuesday, December 06, 2011 - 06:37 pm:

It's just like buying87 octane gasoline.
get the one that is cheaper to buy.
Now if you are going to be making long trips at over 60 MPH then I'd go for the needle bearing.
Or else run an oil line to the bushing.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John F. Regan on Tuesday, December 06, 2011 - 07:28 pm:

I don't care how fast you drive, the needle bearing is a bad idea. If you look at the back end of the drive shaft, Ford installed a hardened sleeve on the shaft and then the roller Hyatt bearing runs on that sleeve and not directly on the shaft. That is because the shaft is not made from hard brittle steel but from a milder softer steel. It is NEVER good engineering to run a hard bearing against a soft shaft since at the very least you want the bearing to wear out and be the replaceable item and not the shaft but a hard bearing running on a soft shaft will score the shaft and scoring a shaft is the first step toward having it break off. There is very little load at the upper end of the drive shaft so the needle bearings don't do anything that a bushing won't do better and quieter. Bearings are in fact noisier than bushings so if your interest is quiet running the bushing wins on that one too. I make the pinion bearing kit that Lang and others sell and I do not recommend the upper bushing to be replaced by needle bearing since it is of no value and has the potential for mischief. Last ones I saw, somebody had taken the needle bearing housing to a grinding wheel and ground a crude groove in its outer housing. I guess that is to promote lubrication but it sure looks like it would be easy for the thing to have knicked one of the needles and since those bearing are purchased already greased, how do I know for sure where the metal shavings went when the notch was ground into the housing. OK I have said my piece - others may differ and your mileage may vary.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Tuesday, December 06, 2011 - 11:49 pm:

I vote with John.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Craig Anderson on Wednesday, December 07, 2011 - 12:14 am:

At the shop we often replaced needle bearings with bronze bushings if a means of lubrication was available.
Bronze is remarkably resilient and we often gained more bearing surface as well.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Wayne Sheldon, Grass Valley, CA on Wednesday, December 07, 2011 - 12:51 am:

John R explained it very well, and he is one person of whom I trust his judgement.
Drive carefully, and enjoy, W2


Top of pagePrevious messageNext messageBottom of page Link to this message  By Glen Chaffin on Wednesday, December 07, 2011 - 11:52 am:

John is totally correct. You never run a hardened bearing on a soft surface.


Top of pagePrevious messageNext messageBottom of page Link to this message  By jack daron-Brownsburg,In. on Wednesday, December 07, 2011 - 12:09 pm:

John,I'm sure glad you agree with me.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jerry VanOoteghem on Wednesday, December 07, 2011 - 12:13 pm:

Like John said.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Alan Long on Thursday, December 08, 2011 - 07:31 am:

original style bronze bush for sure, no question. Listen to John Regan! Like so many other parts on a T that have survived and worked well for 100 years. If it aint broke, don't fix it!!!

Alan in Western Australia


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bob Jablonski on Thursday, December 08, 2011 - 08:45 am:

In retrospect., there was once a universal joint available made by a man who used needle bearings in the unit........... a total failure, I know first hand, I had one in the '26 that bound-up from the needle bearings digging in the softer Ford steel.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ricks_-_Surf_City on Thursday, December 08, 2011 - 10:17 am:

I had one of those too, Bob. The drivetrain got to shaking so bad I had to replace the Ujont.
rdr


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Smith on Thursday, December 08, 2011 - 11:10 am:

I've been using original babbit front bushings in my cars for over 50 years, and haven't had a problem yet.


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