Lol, they're perfectly acceptable ball bearings im sure. Being that they are highly polished steel spheres, I don't think it would be a stretch (its fuking obvious) that those are reflections.
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Originally Posted by phocup
(Post 1376543)
I wasn't until I saw SADfab BALL SACK. Where's my safety pin ..
So its probably reflection / ect but I'm seeing what looks to be a bunch of little weld spots on each ball .. As for buying these off ebay .. they're cheap enough to try but what's the chances that' they're as good as / better than OEM ? Maybe there's obvious answers in the listing, but I'm a noob without $150 of tools to QC. |
Hah, it does say "Deep Groove" so I thought perhaps they're not normal perfectly spherical bearings. As I said, noob to this stuff.
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Originally Posted by phocup
(Post 1376543)
Have you been able to go back out with the replacement hub ? Curious as to how that held up.
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New balls came today. Bought from the seller that Shuiend linked. The exact ones I bought are these, unfortunately either stock are not 13/32 or the ones I was sent were not.
I knew it right when I popped the first new bearing into the plastic retainer. It fell out whereas the old bearing remained in place. Will head to Harbor Freight tomorrow to get some calipers so I can determine the size I was sent. Hopefully can return. Here's a pic to show the difference. 10 OEM balls on top. 10 eBay 13/32 balls on the bottom. https://cimg6.ibsrv.net/gimg/www.mia...ca1ab7ab0f.jpg Night wasn't a complete bust though, the repacked hub with CV2 was pretty smooth. Can't wait to test it out in the car tomorrow. |
Originally Posted by phocup
(Post 1377211)
New balls came today. Bought from the seller that Shuiend linked. The exact ones I bought are these, unfortunately either stock are not 13/32 or the ones I was sent were not.
I knew it right when I popped the first new bearing into the plastic retainer. It fell out whereas the old bearing remained in place. Will head to Harbor Freight tomorrow to get some calipers so I can determine the size I was sent. Hopefully can return. Here's a pic to show the difference. 10 OEM balls on top. 10 eBay 13/32 balls on the bottom. https://cimg6.ibsrv.net/gimg/www.mia...ca1ab7ab0f.jpg Night wasn't a complete bust though, the repacked hub with CV2 was pretty smooth. Can't wait to test it out in the car tomorrow. I will say I bought the balls completely based on some measurements I saw on here. It is very possible that I bought the wrong size originally. I have yet to repack bearings so I have yet to actually measure them myself. |
Im gonna go measure a ball for yall
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This mic reads about 3-4 tenths big. So pretty much dead on 13/32".
https://cimg7.ibsrv.net/gimg/www.mia...438af9aa33.jpg Taken from the inside race of a timken hub. http://i222.photobucket.com/albums/d...psc1fotcpl.jpg |
The assumption here is of course that all hubs by all manufacturers all use the same bearings ;)
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Originally Posted by shuiend
(Post 1377275)
I will say I bought the balls completely based on some measurements I saw on here. It is very possible that I bought the wrong size.
Thanks for measuring that off Sean. I guess your Timken is 13/32. Now that I think about it, there's no guarantee that even different year OEM have same bearing size. Definitely measure your own before buying if going this route. Unfortunately this will add to downtime in many cases as most won't have spare hubs. |
Originally Posted by EO2K
(Post 1377321)
The assumption here is of course that all hubs by all manufacturers all use the same bearings ;)
That is correct, Gordon. |
Some hubs don't even use the same number of balls. Some of the earlier cars used 11 or 12 balls per race. They are apparently gold to SM players.
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Originally Posted by hornetball
(Post 1361041)
So far so good on my Mazdaspeed HDs. 1 track day at MSR-C (1.7CCW) and 2 at Hallett (1 CW and 1 CCW).
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Originally Posted by hornetball
(Post 1377868)
Lost a Mazdaspeed HD. It lasted a total of 11 track days (about 20 hours). So, no advantage there that I can discern. I slapped on a repacked China hub with OK machining.
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Originally Posted by Lincoln Logs
(Post 1377869)
Given how long these hubs last I've given up on the idea of repacking. I just going to for the best quality I can within reason and running them until they go (I always keep two spares with me).
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Originally Posted by hornetball
(Post 1377872)
If I don't see a significant durability increase out of the one I just slapped on (I don't have high hopes), I will do exactly the same. I'm really fast at swapping hubs these days.
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I made a tool to re-pack my front hubs , it rakes about 3 minutes to pump some fresh grease between track days, is anyone interested in one? My cost is $75 a picece when having 10 made.
i will make a batch if there are takers. https://cimg4.ibsrv.net/gimg/www.mia...f0a58ec3d0.jpg |
How does it work? Definitely interested.
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You isert the tool from the wheel side and it provides a seal between the front of the hub and the back bearing inner bore forcing the grease through the balls and races, all the old grease comes out the upright side, i was not about to disassemble the bearings every time i re pack them. Let me see if this link works
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1 Attachment(s)
Kinda like this?
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