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This is what SC bearings looked like to me:
a wad of 1/4 inch ball bearings embedded in a wad of epoxy.
There are two small cogs in the resavoir area. The bottom cog turns the top one. So the friction and wear on the cogs justifies the need for a lubricant. Cool air flowing into the SC is the best way to keep its temperature down.
BTW: you need a giant (Horse sized) syringe to remove and add SC oil while the SC is mounted in the car. There's no room to pour a bottle of oil into the dipstick hole, which is very small. I bought an antique tempered glass syringe off Ebay. Its a 50 CC unit, and is really an interesting piece of work itself.
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