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Author
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Topic: Ball bearing front leaf spring mount?
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BLstangin
Gearhead Posts: 802
From: St. James, MN
Registered: Apr 2002
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posted 11-23-2004 01:25 AM
   
I was thinking of making some caltrac type bars for my car as a school project. I got to thinking, I believe that the cal tracs use an aluminum front bushing correct? I got to thinking and what if I made a sleeve that pressed into the spring, with counter bores for a ball bearing on each side. Then make a sleeve that went through the center of the ball bearing so when you tightened the bolt it didn't squeeze against the ball bearings and everything tightened up, the sleeve would be a snug fit on the bearings and a slip on the bolt. The bearings I was looking at were 1 7/8 o.d. and 7/8 i.d. with a 1735 lb. dynamic load rating, and a 1100 static load rating. Would this work and be a good idea, or would it not hold up, or any other reason why it wouldn't work. I have the tools and time to do it if it will last. Seems like it would outlast an aluminum bushing.------------------
1970 coupe restored with the help of my dad. 306 with 650 dp holley, Weiand Stealth intake, headers, mme custom roller cam, harland sharp roller rockers, kb pistons, 10.3:1 compression ratio, pertonix ignitor 2 with matched coil, lakewood bellhousing, 4-speed toploader, and 3.50 9" locker rear.
1986 f-150, 5.0, factory towing package with original c-6 trans
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TurboGT
Gearhead Posts: 202
From: Hutchinson, Kansas
Registered: Mar 2002
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posted 11-23-2004 09:22 AM
Since the only rotation involved will be swinging the arc of suspension travel, you may have issues with ball bearings prematurely wearing out, due to the ball being in the same place relative to the race most of the time, therefore flattening a particular ball, or damaging the race where a ball contacts it due to stress concentration. I've dealt with a similar situation in an industrial application where failures were high, and this turned out to be the problem. We ended up replacing a double row ball bearing with a single row cylindrical roller type, and the problem went away. That may be a better option for your application, since it gives more area. It's still a line contact with the race, though. ------------------
Mark Walton
'83 Mustang GT 2.3 Turbo NHRA Stocker - it's alive!
'69 "off brand" NHRA SS/EA
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f100cleveland
Gearhead Posts: 328
From: St. James, MN
Registered: Sep 2004
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posted 11-23-2004 05:26 PM
I dont know if Caltrac bars would move enough to take advantage of the bearings. The aluminum spacer is just used to eliminate and movement or flexing. I agree that the constant force on the bearing in basically the same spot might cause some problems over time. Dont really know what the advantages would be??? You could maybe make the spacer out of steel instead of aluminum if you want it to last a little longer. ------------------
1982 Ford F100 2wd Shortbox. Powered by a 357 Cleveland w/ closed chamber 4v's. Full Roller c-6 trans and 4.86 geared Detroit Locker equipped 9" rear. www.ford-trucks.com/user_gallery/displayalbum.php?&albumid=13034
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