KnoxMotorsports
03-06-2009, 01:19 AM
Does anyone know why Lightning use three bearings in the front hubs ,The only reason I can think of is to support the tire & wheel , thank you Robert
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View Full Version : Front Hubs KnoxMotorsports 03-06-2009, 01:19 AM Does anyone know why Lightning use three bearings in the front hubs ,The only reason I can think of is to support the tire & wheel , thank you Robert willyplankhead 03-06-2009, 07:24 AM Onething is you can really tighten them down with out binding its better than having a crush sleve or spacer Slider 03-06-2009, 09:09 AM Robert, You are correct. KnoxMotorsports 03-06-2009, 11:57 AM Thank you Paul ,I called a few people about it and came up with the same reason it is to register the wheel & tire on hub ,, This is for my sprint car axle kit ,Thank you again Robert first25q 03-06-2009, 04:54 PM Does anyone know why Lightning use three bearings in the front hubs ,The only reason I can think of is to support the tire & wheel , thank you Robert Robert send me your address so i can send you a couple of front hubs.My hubs.I have to check to see. If they are for a .750 or.875 bearing.They use two bearings with a span ring.It think i have to 10 to 20 of them.I have 8 tapped holes in them. ED jeffdavis38 03-06-2009, 09:43 PM They run the third bearing to support the wheel so to speak. But other hubs have a shoulder for the wheel but the Lighting and Bullseyes have bigger bearings. No room for a shoulder. I like the bigger bearings.:thumbsup:Does anyone know why Lightning use three bearings in the front hubs ,The only reason I can think of is to support the tire & wheel , thank you Robert first25q 03-07-2009, 03:17 PM They run the third bearing to support the wheel so to speak. But other hubs have a shoulder for the wheel but the Lighting and Bullseyes have bigger bearings. No room for a shoulder. I like the bigger bearings.:thumbsup: Jeff or anyone is this where the bearing goes instead of the boss. Shown in the pic.If so who came up with that idea.If made in a CNC lathe. 1st operation:THe back where the bearings go. 2nd operation:CNC Milling center.Use the circular interpolation mode for the boss.Then the drill and tap the 4 holes. If you ony have a CNC Miling center.The hub can be made there Just my 2 cents ED KnoxMotorsports 03-08-2009, 12:33 AM Well Iam done with this batch ,These are for my sprint car axle kits .They are also the same as a lightning hub with minor improvements . Ed the bearing on the back side is machined .373 deep on the front side it is 380 deep ,Then the outside bearing that holds the wheel lays next to the bearing in the hub , Here are some pics of the hub on sprint car front axle and one next to it for reference , I have two weeks to get ready for first race have three cars to get going ,.. Robert bg77 03-08-2009, 01:05 AM Looking good Bob.... first25q 03-08-2009, 11:59 AM Well Iam done with this batch ,These are for my sprint car axle kits .They are also the same as a lightning hub with minor improvements . Ed the bearing on the back side is machined .373 deep on the front side it is 380 deep ,Then the outside bearing that holds the wheel lays next to the bearing in the hub , Here are some pics of the hub on sprint car front axle and one next to it for reference , I have two weeks to get ready for first race have three cars to get going ,.. RobertNice Job Bob.Nice Job Bob.The bearings must need a spacer in between them.If not then the wall in between the bearings is not to thick.It could be a weak point. Keep up the good work ED KnoxMotorsports 03-08-2009, 12:09 PM Thank you Ed ,BG77 , After I cut the bearing race I put the hub in my rotary table in my mill and use a 5/8 endmill and cut the center another .010 to make side room for the bearing ,it leaves a bearing race of about .175 .for the bearing to rest against ,These should work for the sprint car axle kits .Thank you again Robert first25q 03-08-2009, 03:27 PM Thank you Ed ,BG77 , After I cut the bearing race I put the hub in my rotary table in my mill and use a 5/8 endmill and cut the center another .010 to make side room for the bearing ,it leaves a bearing race of about .175 .for the bearing to rest against ,These should work for the sprint car axle kits .Thank you again Robert What i tried theOAL .812 the center bearing race .050 thick.I guess i can make the OAL i little longer.I just guessed using your 2 bearing depths. ED KnoxMotorsports 03-08-2009, 04:17 PM What i tried theOAL .812 the center bearing race .050 thick.I guess i can make the OAL i little longer.I just guessed using your 2 bearing depths. ED the bearing that Iam using measure at .865 by .374 ,, 8 mm shoulder bolt for axle Robert first25q 03-08-2009, 04:57 PM the bearing that Iam using measure at .865 by .374 ,, 8 mm shoulder bolt for axle Robert I Drew your hub.Just guessing off of your 2 dimensions.My OAL is .812 the center race is .050.If i change the .050 to .175 the OAL will be.937. I am not sure if you have a Boring Head.If so i would use that. Instead of a rotary table.To mill the bearing I.D.Not picking on you.Just trying to help. http://www.use-enco.com/CGI/INSRIT?PMAKA=235-6200&PMPXNO=952827&PARTPG=INLMK3 This is great bolt holes or the back of a rear hub.To slot or to put the 2 holes to clamp the hub.It takes 5C collets.Alot faster than a rotary table. Horizontal-Vertical Collet Indexer Keep up the good work. ED KnoxMotorsports 03-08-2009, 07:03 PM Iam not making the bearing races's on the,,, mill,,,, Iam using the lathe for that ,Iam just removing some of the side materail that the bearing sit's against ,,,The only part of the bearing that touch's is the outter race,, the sheild part of the bearing clears by .10's , Iwill use my boaring bar for flat bar type materail like trailing arm's, ie , Thank you for your help ,, Robert vBulletin® v3.8.7, Copyright ©2000-2012, vBulletin Solutions, Inc.
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