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Where do you get trackball bearings at?
Ummon:
Thanks.
Randy, my Happ trackball is spinning heavy to the left. Some of the bearings are spun out. It is a few years old, but has always been inside and used only maybe 20% of the time. I figured they just weren't good quality, and while I was at it, replace the lot.
RandyT:
--- Quote from: Ummon on July 24, 2008, 02:18:20 am ---Randy, my Happ trackball is spinning heavy to the left. Some of the bearings are spun out. It is a few years old, but has always been inside and used only maybe 20% of the time. I figured they just weren't good quality, and while I was at it, replace the lot.
--- End quote ---
Due to the position of the rollers, all trackballs have a tendency to "go left". You can usually see this well at the desktop when you give it a hard spin. Usually the cursor glues itself to the top of the screen and then goes hard left as the ball slows.
If it's considerably worse than this, you should do a manual inspection of how freely each roller moves (I.e. use your fingers, not the ball, to turn them) and note whether there is heavy resistance. If not, you probably don't need new bearings. Even if you do see an issue, make sure the bearings are to blame. Swap them with the bearings from the other roller to see if the condition improves.
I have seen poor performance in at least one of these shells, due to shaft end to plastic interference. So it's worth it to check everything before investing the money.
RandyT
Ummon:
Oh. I tested each roller and then on the one that was dragging, I took the bearings off and spun them separately between my fingers. Then compared with the other bearings, and the first set had a much lower spin time. If I recall, they also had resistance you could feel when spun.
RandyT:
--- Quote from: Ummon on July 25, 2008, 10:36:22 pm ---Oh. I tested each roller and then on the one that was dragging, I took the bearings off and spun them separately between my fingers. Then compared with the other bearings, and the first set had a much lower spin time. If I recall, they also had resistance you could feel when spun.
--- End quote ---
This may just be some gummy, or heavy grease. As long as they aren't crunchy or binding, you might be able to soak them in WD and re-lube them with some 3-in-1.
RandyT