Simplest but complete upgrading of cup and cone to sealed bearing

I have just finished upgrading my crankset and bottom bracket.

The old square spindle iron crankset weighs 1,400 g.
The replacement aluminium crankset weighs 800 g, savings 600g.

The cup and cone uses an anxle with removable bearings. Mine does not function properly because it makes noises. It turns smoothly by not tightening the holding nuts too much.

You don't need special tools to open the holding nuts. For old bicycles that were never opened up for more than 10 years, better put antirust spray, WD40, and leave it overnight. I tried to open as many screws as possible. Those that require too much effort, I sprayed first. Usually I just waited for a few minutes.

When I leave the antirust oil overnight, all the screws were easily opened. I did not open all, afraid that the bearings will be lost. I just used lithium grease spray.

 When I dismantled today, Zthe bearings are actually cased. However, the bearings were well greased.

When I replaced the bottom bracket with the sealed cartridge bearing, you need a special tool, a larger version of the freewheel tool. You don't need the old holding nuts and bolts. Even the crank leg nut is replaced by a nut.

https://youtu.be/nZysSfdkeEY

Crankset

Sealed Threaded Bottom Bracket


Square spindle crank remover


Cartridge Bottom Bracket Tool


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